---------------------------------------------------------------------------- UniProt Knowledgebase: Swiss-Prot Protein Knowledgebase TrEMBL Protein Database Swiss Institute of Bioinformatics (SIB); Geneva, Switzerland European Bioinformatics Institute (EBI); Hinxton, United Kingdom Protein Information Resource (PIR); Washington DC, USA ---------------------------------------------------------------------------- Description: Controlled vocabulary of keywords Name: keywlist.txt Release: 56.2 of 23-Sep-2008 ---------------------------------------------------------------------------- This document lists the keywords and categories used in the UniProt knowledgebase (Swiss-Prot and TrEMBL). The keywords are classified into the following 10 categories: * Biological process * Cellular component * Coding sequence diversity * Developmental stage * Disease * Domain * Ligand * Molecular function * PTM * Technical term The definition of the keywords and categories usage as well as other information is provided in the following format: --------- --------------------------- ---------------------- Line code Content Occurrence in an entry --------- --------------------------- ---------------------- ID Identifier (keyword) Once; starts a keyword entry IC Identifier (category) Once; starts a category entry AC Accession (KW-xxxx) Once DE Definition Once or more SY Synonyms Optional; once or more GO Gene ontology (GO) mapping Optional; once or more HI Hierarchy Optional; once or more WW Relevant WWW site Optional; once or more CA Category Once per keyword entry; absent in category entries // Terminator Once; ends an entry __________________________________________________________________________ ID 2Fe-2S. AC KW-0001 DE Protein which contains at least one 2Fe-2S iron-sulfur cluster: 2 iron DE atoms complexed to 2 inorganic sulfides and 4 sulfur atoms of DE cysteines from the protein. SY Fe2S2; [2Fe-2S] cluster; [Fe2S2] cluster; Fe2/S2 (inorganic) cluster; SY Di-mu-sulfido-diiron; 2 iron, 2 sulfur cluster binding. GO GO:0051537; 2 iron, 2 sulfur cluster binding HI Ligand: Iron; Iron-sulfur; 2Fe-2S. HI Ligand: Metal-binding; 2Fe-2S. CA Ligand. // ID 3D-structure. AC KW-0002 DE Protein, or part of a protein, whose three-dimensional structure has DE been resolved experimentally (for example by X-ray crystallography or DE NMR spectroscopy) and whose coordinates are available in the PDB DE database. Can also be used for theoretical models. HI Technical term: 3D-structure. CA Technical term. // ID 3Fe-4S. AC KW-0003 DE Protein which contains at least one 3Fe-4S iron-sulfur cluster: 3 iron DE atoms complexed to 4 inorganic sulfides and 3 sulfur atoms of DE cysteines from the protein. In a number of iron-sulfur proteins, the DE 4Fe-4S cluster can be reversibly converted by oxidation and loss of DE one iron ion to a 3Fe-4S cluster. GO GO:0051538; 3 iron, 4 sulfur cluster binding HI Ligand: Iron; Iron-sulfur; 3Fe-4S. HI Ligand: Metal-binding; 3Fe-4S. CA Ligand. // ID 4Fe-4S. AC KW-0004 DE Protein which contains at least one 4Fe-4S iron-sulfur cluster: 4 iron DE atoms complexed to 4 inorganic sulfides and 4 sulfur atoms of DE cysteines from the protein. In a number of iron-sulfur proteins, the DE 4Fe-4S cluster can be reversibly converted by oxidation and loss of DE one iron ion to a 3Fe-4S cluster. GO GO:0051539; 4 iron, 4 sulfur cluster binding HI Ligand: Iron; Iron-sulfur; 4Fe-4S. HI Ligand: Metal-binding; 4Fe-4S. CA Ligand. // ID Abscisic acid biosynthesis. AC KW-0937 DE Protein involved in the synthesis of abscisic acid (ABA) (5-(1- DE hydroxy-2,6,6,trimethyl-4-oxocyclohex-2-en-1-y1)-3-methylpenta-2,4- DE dienoic acid). ABA is a plant hormone which play a role in many DE aspects of plant growth, development and cellular signaling (e.g. seed DE dormancy, seed maturation, vegetative growth and responses to various DE environmental stimuli such as stomatal closure during drought). This DE phytohormone can be synthesized from farnesyl diphosphate (direct C15 DE pathway) or from 9-cis-violaxanthine (indirect C40 pathway). SY ABA anabolism; ABA biosynthesis; ABA formation; ABA synthesis; SY Abscisic acid anabolism; Abscisic acid biosynthetic process; SY Abscisic acid formation; Abscisic acid synthesis. GO GO:0009688; abscisic acid biosynthetic process HI Biological process: Abscisic acid biosynthesis. CA Biological process. // ID Abscisic acid signaling pathway. AC KW-0938 DE Protein involved in the abscisic acid (ABA) (5-(1-hydroxy- DE 2,6,6,trimethyl-4-oxocyclohex-2-en-1-y1)-3-methylpenta-2,4-dienoic DE acid) signaling pathway (e.g. transport and signal transduction) that DE regulates many aspects of plant growth, development and cellular DE signaling (e.g. seed dormancy, seed maturation, vegetative growth and DE responses to various environmental stimuli such as stomatal closure DE during drought). This phytohormone can be synthesized from farnesyl DE diphosphate (direct C15 pathway) or from 9-cis-violaxanthine (indirect DE C40 pathway). SY ABA mediated signaling; ABA signaling pathway; SY Abscisic acid mediated signaling. GO GO:0009738; abscisic acid mediated signaling HI Biological process: Abscisic acid signaling pathway. CA Biological process. // ID Acetoin biosynthesis. AC KW-0005 DE Protein involved in the synthesis of acetoin (3-hydroxy-2-butanone). DE Acetoin is a component of the butanediol cycle (butanediol DE fermentation) in microorganisms. SY 3-hydroxy-2-butanone anabolism; 3-hydroxy-2-butanone biosynthesis; SY 3-hydroxy-2-butanone biosynthetic process; SY 3-hydroxy-2-butanone formation; 3-hydroxy-2-butanone synthesis; SY Acetoin anabolism; Acetoin biosynthetic process; Acetoin formation; SY Acetoin synthesis. GO GO:0045151; acetoin biosynthetic process HI Biological process: Acetoin biosynthesis. CA Biological process. // ID Acetoin catabolism. AC KW-0006 DE Protein involved in the degradation of acetoin (3-hydroxy-2-butanone). DE Acetoin is a component of the butanediol cycle (butanediol DE fermentation) in microorganisms. SY 3-hydroxy-2-butanone breakdown; SY 3-hydroxy-2-butanone catabolic process; SY 3-hydroxy-2-butanone catabolism; 3-hydroxy-2-butanone degradation; SY Acetoin breakdown; Acetoin catabolic process; Acetoin degradation. GO GO:0045150; acetoin catabolic process HI Biological process: Acetoin catabolism. CA Biological process. // ID Acetylation. AC KW-0007 DE Protein which is posttranslationally modified by the attachment of at DE least one acetyl group; generally at the N-terminus. SY Acetylated; N-acetylated. HI PTM: Acetylation. CA PTM. // ID Acetylcholine receptor inhibitor. AC KW-0008 DE Protein that inhibits both nicotinic (nAChR) and muscarinic (mAChR) DE acetylcholine receptors. The nAChR is a postsynaptic membrane protein DE that, after binding acetylcholine, responds by an extensive change in DE conformation, which leads to opening of an ion-conducting channel DE across the plasma membrane. The mAChR is a membrane protein that DE acts through G proteins and mediates various cellular responses, DE including inhibition of adenylate cyclase, breakdown of DE phosphoinositides and modulation of potassium channels through the DE action of G proteins. SY AChR inhibitor. GO GO:0030550; acetylcholine receptor inhibitor activity HI Molecular function: Toxin; Neurotoxin; Postsynaptic neurotoxin; Acetylcholine receptor inhibitor. CA Molecular function. // ID Actin-binding. AC KW-0009 DE Protein which binds to actin, and thereby can modulate the properties DE and/or functions of the actin filament. SY Actin filament binding. GO GO:0003779; actin binding HI Ligand: Actin-binding. CA Ligand. // ID Actin capping. AC KW-0117 DE Protein that binds to the free end of the actin filament and thereby DE blocks further addition of subunits. SY Actin filament capping; F-actin capping. GO GO:0051016; barbed-end actin filament capping HI Molecular function: Actin capping. CA Molecular function. // ID Activator. AC KW-0010 DE Protein that positively regulates either the transcription of one or DE more genes, or the translation of mRNA. SY Positive activator. HI Molecular function: Activator. CA Molecular function. // ID Acute phase. AC KW-0011 DE Protein involved in acute phase, a response of the vertebrate body to DE insults, infections, immunological reactions or inflammatory DE processes; characterised by redness (rubor), heat (calor), swelling DE (tumor), pain (dolor) and sometimes loss of function. SY Acute-phase reaction; Acute-phase response. GO GO:0006953; acute-phase response HI Biological process: Acute phase. WW http://www.copewithcytokines.de/cope.cgi?228 CA Biological process. // ID Acyltransferase. AC KW-0012 DE Enzyme catalyzing the transfer of acyl- (RCO-) groups. GO GO:0008415; acyltransferase activity HI Molecular function: Transferase; Acyltransferase. CA Molecular function. // ID ADP-ribosylation. AC KW-0013 DE Protein which is posttranslationally modified by the attachment of DE at least one ADP-ribosyl group. SY Adenosinediphospho-ribosylation; ADP-rybosylated. HI PTM: ADP-ribosylation. CA PTM. // ID Age-related macular degeneration. AC KW-0913 DE Protein which, if defective, causes age-related macular degeneration DE (ARMD), the most common cause of irreversible vision loss in the DE developed world. In most patients, the disease is manifest as DE ophthalmoscopically visible yellowish accumulations of protein and DE lipid (known as drusen) that lie beneath the retinal pigment DE epithelium and within an elastin-containing structure known as Bruch's DE membrane. ARMD is likely to be a mechanistically heterogeneous group DE of disorders, and the specific disease mechanisms that underlie the DE vast majority of cases are currently unknown. However, a number of DE studies have suggested that both genetic and environmental factors are DE likely to play a role. SY ARMD. HI Disease: Age-related macular degeneration. CA Disease. // ID Aicardi-Goutieres syndrome. AC KW-0948 DE Protein which, if defective, causes Aicardi-Goutieres syndrome, an DE autosomal recessive genetic disorder that is phenotypically similar to DE in utero viral infection. The disease is characterized by severe DE neurological dysfunction in infancy, leading to progressive DE microcephaly, spasticity, dystonic posturing, profound psychomotor DE retardation and often death in early childhood. SY AGS; Cree encephalitis; Pseudo-torch syndrome; SY Pseudotoxoplasmosis syndrome. HI Disease: Aicardi-Goutieres syndrome. CA Disease. // ID AIDS. AC KW-0014 DE Protein encoded by the human immunodeficiency viruses HIV-1 or HIV- DE 2, which are the cause of acquired immunodeficiency syndrome (AIDS). DE This disease is characterized by a severe defect of cell-mediated DE immunity which is often accompanied by cancers such as Kaposi's DE sarcoma, as well as secondary infections such as tuberculosis. SY Acquired immunodeficiency syndrome. HI Disease: AIDS. CA Disease. // ID Albinism. AC KW-0015 DE Protein which, if defective, causes albinism, a genetically determined DE or environmentally induced absence of pigmentation in animals normally DE pigmented. This can lead for example to lack of pigmentation in hair, DE skin and eyes. HI Disease: Albinism. CA Disease. // ID Alginate biosynthesis. AC KW-0016 DE Protein involved in the synthesis of alginate. Alginate is an DE exopolysaccharide in the cell walls of brown algae and in the capsular DE material of certain strains of Pseudomonas and Azotobacter, in which DE it provides a protective barrier against host immune defenses and DE antibiotics. SY Alginate anabolism; Alginate formation; Alginate synthesis; SY Alginic acid anabolism; Alginic acid biosynthesis; SY Alginic acid formation; Alginic acid synthesis. GO GO:0042121; alginic acid biosynthetic process HI Biological process: Alginate biosynthesis. CA Biological process. // ID Alkaloid metabolism. AC KW-0017 DE Protein involved in a biochemical reaction with alkaloids, a group of DE nitrogenous organic molecules (mostly heterocyclic) usually found in DE plants. Various alkaloids have toxic or medical properties, such as DE caffeine, morphine and nicotine. SY Alkaloid metabolic process. GO GO:0009820; alkaloid metabolic process HI Biological process: Alkaloid metabolism. CA Biological process. // ID Alkylphosphonate uptake. AC KW-0019 DE Protein involved in alkylphosphonate uptake. Certain bacteria such as DE Escherichia coli can use alkylphosphonates as a phosphorus source. GO GO:0015716; phosphonate transport HI Biological process: Alkylphosphonate uptake. CA Biological process. // ID Allergen. AC KW-0020 DE Protein that stimulates the production of, and reacts with, antibodies DE (IgE) thus creating an allergic reaction (immediate-type DE hypersensitivity). Examples are pollen allergens from plants, venom DE allergens from insects, dust-mite allergens, and animal hair allergens. HI Disease: Allergen. CA Disease. // ID Allosteric enzyme. AC KW-0021 DE Enzyme whose activity is modified by the noncovalent binding of an DE allosteric effector at a site other than the active site. This binding DE mediates conformational changes, altering its catalytic or binding DE properties. GO GO:0003824; catalytic activity HI Technical term: Allosteric enzyme. CA Technical term. // ID Alpha-amylase inhibitor. AC KW-0022 DE Protein that inhibits alpha-amylase, an enzyme that catalyzes the DE endohydrolysis of 1,4-alpha-glucosidic linkages in oligosaccharides DE and polysaccharides. GO GO:0015066; alpha-amylase inhibitor activity HI Molecular function: Alpha-amylase inhibitor. CA Molecular function. // ID Alport syndrome. AC KW-0023 DE Protein which, if defective, causes Alport syndrome, an hereditary DE disorder characterized by a progressive glomerulonephritis leading to DE end-stage renal disease, often associated with sensorineural hearing DE loss and ocular abnormalities. HI Disease: Alport syndrome. CA Disease. // ID Alternative initiation. AC KW-0024 DE Protein for which at least two isoforms exist due to the usage of DE alternative initiation codons in the same mRNA (the resulting isoforms DE differ in their N-terminus). HI Coding sequence diversity: Alternative initiation. CA Coding sequence diversity. // ID Alternative promoter usage. AC KW-0877 DE Protein for which at least two isoforms exist due to the alternative DE usage of promoters. HI Coding sequence diversity: Alternative promoter usage. CA Coding sequence diversity. // ID Alternative splicing. AC KW-0025 DE Protein for which at least two isoforms exist due to distinct pre-mRNA DE splicing events. HI Coding sequence diversity: Alternative splicing. CA Coding sequence diversity. // ID Alzheimer disease. AC KW-0026 DE Protein which, if defective, causes Alzheimer's disease. This DE neurological disorder is often observed in elderly people and involves DE atrophy of neurones in the cerebral cortex leading to progressive DE dementia. SY Alzheimer's disease. HI Disease: Alzheimer disease. CA Disease. // ID Amelogenesis imperfecta. AC KW-0986 DE Protein which, if defective, causes amelogenesis imperfecta, a DE clinically and genetically heterogeneous group of disorders affecting DE the dental enamel. The enamel may be hypoplastic, hypomineralized or DE both, and affected teeth may be discoloured, sensitive or prone to DE disintegration either pre-eruption or post-eruption. In the DE hypoplastic type of amelogenesis imperfecta, the enamel is of normal DE hardness but does not develop to normal thickness. In the DE hypomineralized type, the enamel is of normal thickness but opaque or DE yellowish white without lustre on newly erupted teeth; it is so soft DE that it is lost soon after eruption. Amelogenesis imperfecta DE occasionally occurs in conjunction with other dental, oral and extra- DE oral features. HI Disease: Amelogenesis imperfecta. CA Disease. // ID Amidation. AC KW-0027 DE Peptide which is posttranslationally modified by C-terminal amidation. DE The amino acid to be modified is almost always followed by a glycine, DE which provides the amide group. In a first reaction step the glycine is DE oxidized to form alpha-hydroxy-glycine. The oxidized glycine cleaves DE into the C-terminally amidated peptide and an N-glyoxylated peptide. DE C-terminal amidation is essential to the biological activity of many DE neuropeptides and hormones. In a few cases alpha-oxidative cleavage of DE an amino acid other than glycine has been observed. All such cases are DE additionally annotated with the word "atypical" in the feature description. SY Amidated. HI PTM: Amidation. CA PTM. // ID Amino-acid biosynthesis. AC KW-0028 DE Protein involved in the synthesis of naturally-occuring amino acids. DE In addition to their use for protein biosynthesis, they are the DE precursors of many molecules such as purines, pyrimidines, histamines, DE adrenaline and melanin. SY Amino-acid synthesis; Amino-acid anabolism; Amino-acid formation. GO GO:0008652; amino acid biosynthetic process HI Biological process: Amino-acid biosynthesis. CA Biological process. // ID Amino-acid transport. AC KW-0029 DE Protein involved in the transport of amino acids. SY Amino acid transport. GO GO:0006865; amino acid transport HI Biological process: Transport; Amino-acid transport. CA Biological process. // ID Aminoacyl-tRNA synthetase. AC KW-0030 DE Enzyme that activates an amino acid for translation by forming an DE aminoacyladenylate intermediate and then links this activated amino DE acid to the corresponding tRNA molecule (amino acid-tRNA, aminoacyl- DE tRNA). In general, a specific aminoacyl-tRNA synthase is available for DE each amino acid. SY Aminoacyl-tRNA synthase; Aminoacyl-tRNA ligase; Amino acid translase. GO GO:0004812; aminoacyl-tRNA ligase activity HI Molecular function: Ligase; Aminoacyl-tRNA synthetase. CA Molecular function. // ID Aminopeptidase. AC KW-0031 DE Enzyme that catalyzes the removal of amino acids from the N-terminus DE of peptides and proteins. GO GO:0004177; aminopeptidase activity HI Molecular function: Hydrolase; Protease; Aminopeptidase. CA Molecular function. // ID Aminotransferase. AC KW-0032 DE Enzyme that catalyzes the transfer of an alpha-amino group from an DE amino acid to an alpha-keto acid. The amino group is usually DE covalently bound by the prosthetic group pyridoxal phosphate. SY Transaminase. GO GO:0008483; transaminase activity HI Molecular function: Transferase; Aminotransferase. CA Molecular function. // ID Ammonia transport. AC KW-0924 DE Protein involved in the transport of ammonia/ammonium. Ammonia is an DE excellent nitrogen source for many bacteria, fungi, and plants, but it DE can be cytotoxic, especially for animal cells at high concentration. DE Its transport across cellular membranes is thus of high biological DE relevance. Ammonia (NH3) is a weak base and exists predominantly as DE the ammonium ion (NH4+) in biological fluids. SY Ammonium transport. GO GO:0015696; ammonium transport HI Biological process: Transport; Ammonia transport. CA Biological process. // ID Amphibian defense peptide. AC KW-0878 DE Protein specifically found in the skin of animals belonging to the DE vertebrate class amphibia, that includes frogs, toads, newts, DE salamanders and worm-like apoda. The skins of anuran amphibians, in DE addition to mucous glands, contain highly specialized poison glands, DE which, in reaction to stress or attack, exude a complex noxious DE species-specific cocktail of biologically active molecules. These DE secretions often contain a plethora of peptides such as neuropeptides DE and hormones. The frog dermatous glands also synthesize and store an DE extraordinarily rich variety of wide-spectrum antimicrobial peptides DE that are released onto the outer layer of the skin to provide an DE effective and fast-acting defense against harmful microorganisms. GO GO:0006952; defense response HI Molecular function: Amphibian defense peptide. CA Molecular function. // ID Amyloid. AC KW-0034 DE Protein which, if defective, causes amyloidosis, or constituent of DE amyloid deposits. Amyloid is a starch-like, complex proteinaceous DE fibrillar material deposited in heart, liver and other organs in DE various forms of amyloidosis. Amyloid deposits in the brain are DE characteristic of Alzheimer's disease, trisomy 21 and, to a limited DE extent, in normal aging. HI Disease: Amyloid. CA Disease. // ID Amyloplast. AC KW-0035 DE Protein found in the amyloplast, a colorless plant plastid that forms DE and stores starch. Amyloplasts are found in many tissues, particularly DE in storage tissues. GO GO:0009501; amyloplast HI Cellular component: Plastid; Amyloplast. CA Cellular component. // ID Amyotrophic lateral sclerosis. AC KW-0036 DE Protein which, if defective, causes amyotrophic lateral sclerosis DE (ALS), a degenerative disorder of motor neurons in the cortex, brain DE stem and spinal cord. ALS is characterized by muscular weakness and DE atrophy. SY ALS. HI Disease: Amyotrophic lateral sclerosis. CA Disease. // ID Angiogenesis. AC KW-0037 DE Protein involved in angiogenesis, the sprouting or splitting of DE capillaries from pre-existing vasculature. Angiogenesis plays an DE important role for example during embryonic development, normal growth DE of tissues and maintenance of the normal vasculature, wound healing, DE tumor growth and metastasis. SY Vascularization. GO GO:0001525; angiogenesis HI Biological process: Differentiation; Angiogenesis. HI Molecular function: Developmental protein; Angiogenesis. WW http://www.copewithcytokines.de/cope.cgi?517 CA Biological process. // ID Anion exchange. AC KW-0039 DE Protein involved in the exchange of anions across a membrane. Anion DE exchange is a cellular transport function which contributes to the DE regulation of cell pH and volume by a functionally related anion DE exchanger protein family. SY Anion exchanger activity. GO GO:0015380; anion exchanger activity HI Biological process: Transport; Ion transport; Anion exchange. CA Biological process. // ID ANK repeat. AC KW-0040 DE Protein containing at least one ANK repeat, a conserved domain of DE approximately 33 amino acids, that was originally identified in DE ankyrin. It has been described as an L-shaped structure consisting of DE a beta-hairpin and two alpha-helices. Many ankyrin repeat regions are DE known to function as protein-protein interaction domains. SY ANK motif; Ankyrin repeat. HI Domain: ANK repeat. CA Domain. // ID Annexin. AC KW-0041 DE Protein containing at least one annexin repeat, a conserved domain of DE 61 residues, which is present in proteins of the annexin family in DE either four or eight copies. The annexin calcium binding sites are DE found within the repeated domains. SY Annexin repeat. HI Domain: Annexin. CA Domain. // ID Antenna complex. AC KW-0042 DE Component of an antenna complex or protein regulating the expression DE of such components. Antenna complexes are light-harvesting systems DE (LHC) which are protein-pigment complexes in or on photosynthetic DE membranes. LHCs receive radiant energy and transfer it to the reaction DE centers; an array of LHCs is often referred to as an "antenna". LHCs DE typically include one or more associated pigments (phycobilins, DE chlorophylls, bacteriochlorophylls and carotenoids). SY Light-harvesting antenna; Light-harvesting complex. GO GO:0030076; light-harvesting complex HI Cellular component: Antenna complex. CA Cellular component. // ID Anti-oncogene. AC KW-0043 DE Protein that negatively regulates the cell cycle. If it is inactivated DE or defective the cell can proceed to rapid division. These proteins may DE suppress the development of tumors. SY Antitumor; Tumor suppressor. GO GO:0045786; negative regulation of progression through cell cycle HI Molecular function: Anti-oncogene. HI Biological process: Cell cycle; Anti-oncogene. CA Molecular function. // ID Antibiotic. AC KW-0044 DE Protein with antibacterial activity. SY Antibacterial; Bactericide. GO GO:0042742; defense response to bacterium HI Molecular function: Antimicrobial; Antibiotic. CA Molecular function. // ID Antibiotic biosynthesis. AC KW-0045 DE Protein involved in the synthesis of antibiotics. Antibiotics are DE organic compounds produced by living organims that can selectively DE inhibit the growth of, or kill bacteria. SY Antibiotic synthesis; Antibiotic anabolism; Antibiotic formation. GO GO:0017000; antibiotic biosynthetic process HI Biological process: Antibiotic biosynthesis. CA Biological process. // ID Antibiotic resistance. AC KW-0046 DE Protein that confers, on bacteria, the ability to withstand DE antibiotics. The resistance is often due either to mutations that DE prevent antibiotic binding to the protein or to amplification of the DE gene encoding the protein. SY Resistance to antibiotic. GO GO:0046677; response to antibiotic HI Biological process: Antibiotic resistance. CA Biological process. // ID Antifreeze protein. AC KW-0047 DE Protein that lowers the freezing point of blood or other biological DE fluids by inhibiting the formation of water ice crystals. SY AFP; Ice structuring protein; ISP. GO GO:0050825; ice binding GO GO:0042309; homoiothermy GO GO:0050826; response to freezing HI Molecular function: Antifreeze protein. CA Molecular function. // ID Antimicrobial. AC KW-0929 DE Protein which has deleterious effects on any type of microbe. Microbe DE is a general term for microscopic unicellular organisms, such as DE bacteria, archaea, fungi and protista. While the term microbe is often DE also used for viruses, we do not apply the keyword antimicrobial to DE antiviral proteins. HI Molecular function: Antimicrobial. CA Molecular function. // ID Antioxidant. AC KW-0049 DE Protein capable of counteracting the damaging effects of oxidation, DE e.g. by trapping free radicals generated during the metabolic burst DE and possibly inhibiting ageing. Scavengers of highly reactive and DE harmful oxygen species. GO GO:0016209; antioxidant activity HI Molecular function: Antioxidant. CA Molecular function. // ID Antiport. AC KW-0050 DE Protein involved in the transport of a solute across a biological DE membrane coupled, directly, to the transport of a different solute DE in the opposite direction. SY Antiporter; Countertransporter; Exchange transporter; Exchanger. GO GO:0015297; antiporter activity HI Biological process: Transport; Antiport. CA Biological process. // ID Antiviral defense. AC KW-0051 DE Protein synthesized or activated in the cell in response to viral DE infection, or protein with specific antiviral activity within the DE cell. Eucaryotic cells have an innate immune mechanism to fight viral DE infection, which is activated through the interferon signaling pathway DE or through dsRNA detection in the cytoplasm. It leads to the DE establishment of an antiviral cell state, which prevents virus DE replication or induces apoptosis. Most viruses have developed specific DE proteins to prevent the establishment of an antiviral state. GO GO:0009615; response to virus HI Biological process: Antiviral defense. CA Biological process. // ID Antiviral protein. AC KW-0930 DE Protein with antiviral activity. Often this activity is fortuitous DE (e.g. a bacterial protein displaying anti-HIV activity). GO GO:0050688; regulation of antiviral response HI Molecular function: Antiviral protein. CA Molecular function. // ID Aortic aneurysm. AC KW-0993 DE Protein which, if defective, causes aortic aneurysm. Aortic aneurysm DE is the dilation of the wall of the aorta. It forms a sac that is DE filled with fluid or clotted blood, often resulting in a pulsating DE tumor. Aortic aneurysms are classified by their location on the aorta. HI Disease: Aortic aneurysm. CA Disease. // ID Apicoplast. AC KW-0933 DE Protein encoded by the apicoplast genome or protein located in the DE apicoplast, a plastid found in some apicomplexan parasites which is DE a non-photosynthetic plastid relict. This organelle contains ring-like DE DNA of about 35 Kb as a third type of cell genome. Apicoplasts do not DE contain thylakoids; it is not yet clear if they contain internal DE membranes. SY Golgi-adjunct organelle; Thick-walled organelle. GO GO:0020011; apicoplast HI Cellular component: Plastid; Apicoplast. CA Cellular component. // ID Apoplast. AC KW-0052 DE Protein which is found in the part of the plant which is external to DE the living protoplast, ie the cell wall, the intercellular space and DE the lumina of dead cells such as xylem vessels and tracheids. GO GO:0048046; apoplast HI Cellular component: Apoplast. CA Cellular component. // ID Apoptosis. AC KW-0053 DE Protein involved in programmed cell death. Apoptosis is an active DE process requiring metabolic activity by the dying cell; often DE characterised by cleavage of the DNA into fragments that give a so- DE called "laddering pattern" on gels. It serves as a balance to mitosis DE in regulating the size of animal tissues. SY Active cell death; Apoptotic programmed cell death; SY Type I programmed cell death. GO GO:0006915; apoptosis HI Biological process: Apoptosis. WW http://www.copewithcytokines.de/cope.cgi?638 CA Biological process. // ID Arabinose catabolism. AC KW-0054 DE Protein involved in arabinose breakdown. Arabinose is a 5-carbon DE aldose sugar found in plant gums, pectins and bacterial cell wall DE polysaccharides. SY Arabinose breakdown; Arabinose catabolic process; SY Arabinose degradation. GO GO:0019568; arabinose catabolic process HI Biological process: Carbohydrate metabolism; Arabinose catabolism. CA Biological process. // ID Archaeal flagellum. AC KW-0974 DE Archaeal protein present in or involved in the biogenesis or function DE of a flagellum, a long hair-like cell suface appendage made of DE polymerized flagellin with an attached hook. This rotating structure DE with switches propels the cell through a liquid medium. The archaeal DE flagellum is distinct from its bacterial equivalent in terms of DE architecture, composition and mechanism of assembly. Thinner (10-15 DE nm) compared to the bacterial flagellum (18-24 nm), it is usually DE composed of several types of flagellins and is glycosylated. SY Archaeal flagella; Archaeal flagellar apparatus. HI Cellular component: Archaeal flagellum. CA Cellular component. // ID Arginine biosynthesis. AC KW-0055 DE Protein involved in the synthesis of the basic amino acid arginine DE (Arg). SY Arginine anabolism; Arginine biosynthetic process; Arginine formation; SY Arginine synthesis. GO GO:0006526; arginine biosynthetic process HI Biological process: Amino-acid biosynthesis; Arginine biosynthesis. CA Biological process. // ID Arginine metabolism. AC KW-0056 DE Protein involved in biochemical reactions with the basic amino acid DE arginine (Arg). SY Arginine metabolic process. GO GO:0006525; arginine metabolic process HI Biological process: Arginine metabolism. CA Biological process. // ID Aromatic amino acid biosynthesis. AC KW-0057 DE Protein involved in the synthesis of an amino acid with an aromatic DE side-chain: phenylalanine (Phe), tyrosine (Tyr) and tryptophan (Trp). SY Aromatic amino acid anabolism; SY Aromatic amino acid family biosynthetic process; SY Aromatic amino acid formation; Aromatic amino acid synthesis. GO GO:0009073; aromatic amino acid family biosynthetic process HI Biological process: Amino-acid biosynthesis; Aromatic amino acid biosynthesis. CA Biological process. // ID Aromatic hydrocarbons catabolism. AC KW-0058 DE Protein involved in the breakdown of aromatic hydrocarbons. Aromatic DE hydrocarbons are compounds which only contain carbon and hydrogen, DE examples include the common pollutants benzene and naphthalene. SY Aromatic compound catabolic process; Aromatic hydrocarbons breakdown; SY Aromatic hydrocarbons degradation. GO GO:0019439; aromatic compound catabolic process HI Biological process: Aromatic hydrocarbons catabolism. CA Biological process. // ID Arsenical resistance. AC KW-0059 DE Protein that confers, on bacteria and other microorganisms, the DE ability to withstand aromatic compounds of arsenic. SY Arsenic resistance; Resistance to arsenic. GO GO:0046685; response to arsenic HI Biological process: Arsenical resistance. CA Biological process. // ID Ascorbate biosynthesis. AC KW-0060 DE Protein involved in the synthesis of ascorbate, the ionized form of DE ascorbic acid (vitamin C). Ascorbic acid is derived from glucose via DE the uronic acid pathway. This water-soluble vitamin is essential for DE the synthesis of bone, cartilage and dentine. It is required in the DE diet of primates and some other species that cannot synthesize L- DE ascorbic acid because of their deficiency in L-gulono-gamma-lactone DE oxidase, a key enzyme for the biosynthesis of this vitamin. SY Ascorbate anabolism; Ascorbate biosynthetic process; SY Ascorbate formation; Ascorbate synthesis; Ascorbic acid anabolism; SY Ascorbic acid biosynthesis; Ascorbic acid biosynthetic process; SY Ascorbic acid formation; Ascorbic acid synthesis; Vitamin C anabolism; SY Vitamin C biosynthesis; Vitamin C biosynthetic process; SY Vitamin C formation; Vitamin C synthesis. GO GO:0019853; L-ascorbic acid biosynthetic process HI Biological process: Ascorbate biosynthesis. CA Biological process. // ID Asparagine biosynthesis. AC KW-0061 DE Protein involved in the synthesis of the polar amino acid asparagine DE (Asn). SY Asparagine anabolism; Asparagine biosynthetic process; SY Asparagine formation; Asparagine synthesis. GO GO:0006529; asparagine biosynthetic process HI Biological process: Amino-acid biosynthesis; Asparagine biosynthesis. CA Biological process. // ID Aspartic protease inhibitor. AC KW-0062 DE Protein which inhibits the catalytic activity of an aspartyl protease, a DE class of proteases that contains an active site aspartate residue DE (Asp), e.g. pepsin, HIV retropepsin, renin, etc. SY Aspartic proteinase inhibitor; Aspartic-type endopeptidase inhibitor; SY Aspartyl protease inhibitor. GO GO:0019828; aspartic-type endopeptidase inhibitor activity HI Molecular function: Protease inhibitor; Aspartic protease inhibitor. CA Molecular function. // ID Aspartyl esterase. AC KW-0063 DE Enzyme which catalyzes the hydrolysis of esters and is characterized DE by a catalytically active aspartic acid residue in its active site. GO GO:0045330; aspartyl esterase activity HI Molecular function: Hydrolase; Aspartyl esterase. CA Molecular function. // ID Aspartyl protease. AC KW-0064 DE Proteolytic enzyme with an aspartate residue (Asp) in its active site. DE There are many families of aspartyl proteases. The most well known one DE is the pepsin family (A1 in MEROPS classification) which is known to DE exist in vertebrates, fungi, plants, retroviruses and some plant DE viruses. SY Acid protease; Aspartate protease; Aspartic protease; SY Aspartic proteinase; Aspartic-type endopeptidase; Aspartyl proteinase. GO GO:0004190; aspartic-type endopeptidase activity HI Molecular function: Hydrolase; Protease; Aspartyl protease. CA Molecular function. // ID Atherosclerosis. AC KW-0065 DE Protein which, if defective, causes atherosclerosis, which is DE characterized by deposits of plaques (atheromas) in the blood vessels, DE thus narrowing the vessel lumen and restricting blood flow. Atheromas DE consist of lipids (cholesterol), carbohydrates, blood products, DE fibrous tissue and calcium deposits. SY Arteriosclerosis. HI Disease: Atherosclerosis. CA Disease. // ID ATP synthesis. AC KW-0066 DE Protein involved in the synthesis of adenosine 5'-triphosphate (ATP). DE ATP is a ribonucleotide adenosine (a purine base adenine linked to the DE sugar D-ribofuranose) which carries 3 phosphate groups esterified to DE the sugar moiety. It is the cell's source for energy and phosphate. SY ATP biosynthesis; ATP anabolism; ATP formation; SY ATP biosynthetic process; Adenosine 5'-triphosphate biosynthesis; SY Adenosine 5'-triphosphate anabolism; Adenosine 5'-triphosphate formation; SY Adenosine 5'-triphosphate biosynthetic process; SY Adenosine triphosphate biosynthesis; Adenosine triphosphate anabolism; SY Adenosine triphosphate biosynthetic process; SY Adenosine triphosphate formation. GO GO:0046872; metal ion binding GO GO:0006754; ATP biosynthetic process HI Biological process: ATP synthesis. CA Biological process. // ID ATP-binding. AC KW-0067 DE Protein which binds adenosine 5'-triphosphate (ATP), a ribonucleotide DE adenosine (a purine base adenine linked to the sugar D-ribofuranose) DE that carries three phosphate groups esterified to the sugar moiety. It DE is the cell's source for energy and phosphate. SY Adenosine 5'-triphosphate binding; Adenosine triphosphate binding. GO GO:0005524; ATP binding HI Ligand: Nucleotide-binding; ATP-binding. CA Ligand. // ID Atrial septal defect. AC KW-0976 DE Protein which, if defective, causes atrial septal defect, a congenital DE cardiac anomaly characterized by persistent patency of the atrial DE septum that results in blood flow between the atria. It is due to DE failure of fusion between either the septum secundum or the septum DE primum and the endocardial cushions. SY Atrioseptal defect. HI Disease: Atrial septal defect. CA Disease. // ID Autocatalytic cleavage. AC KW-0068 DE Protein catalyzing its own cleavage. SY Autocatalytic peptide cleavage. HI PTM: Autocatalytic cleavage. CA PTM. // ID Autoimmune encephalomyelitis. AC KW-0069 DE Protein which, if defective, causes autoimmune encephalomyelitis. This DE form of autoimmune inflammation of the brain and spinal cord causes DE demyelination. SY Autoimmune encephalitis. HI Disease: Autoimmune encephalomyelitis. CA Disease. // ID Autoimmune uveitis. AC KW-0070 DE Protein which, if defective, causes autoimmune inflammation of the DE uvea, which is the vascular middle coat of the eye, comprising the DE iris, ciliary body and choroid. HI Disease: Autoimmune uveitis. HI Biological process: Sensory transduction; Vision; Autoimmune uveitis. CA Disease. // ID Autoinducer synthesis. AC KW-0071 DE Protein involved in the synthesis of an autoinducer, a molecule which DE triggers the regulators of biosynthetic genes. SY Autoinducer anabolism; Autoinducer biosynthesis; SY Autoinducer biosynthetic process; Autoinducer formation. HI Biological process: Autoinducer synthesis. CA Biological process. // ID Autophagy. AC KW-0072 DE Protein participating in autophagy, a process of intracellular bulk DE degradation in which cytoplasmic components including organelles are DE sequestered within double-membrane vesicles that deliver the contents DE to the lysosome/vacuole for degradation. There are three primary forms DE of autophagy: chaperone-mediated autophagy, microautophagy and DE macroautophagy. During macroautophagy, the sequestering vesicles, DE termed autophagosomes, fuse with the lysosome or vacuole resulting in DE the delivery of an inner vesicle (autophagic body) into the lumen of DE the degradative compartment. GO GO:0006914; autophagy HI Biological process: Autophagy. CA Biological process. // ID Auxin biosynthesis. AC KW-0073 DE Protein involved in the synthesis of auxins. Auxins are plant hormones DE which play a role in many aspects of plant growth and development. SY Auxin anabolism; Auxin biosynthetic process; Auxin formation; SY Auxin synthesis. GO GO:0009851; auxin biosynthetic process HI Biological process: Auxin biosynthesis. CA Biological process. // ID Auxin signaling pathway. AC KW-0927 DE Protein involved in the auxin signaling pathway (e.g. transport and DE signal transduction) that regulates many aspects of plant growth and DE development (e.g. caulogenesis, rhizogenesis, tropisms, nodulation). DE The major form of this phytohormone is indole-3-acetic acid (IAA) that DE can be synthesized both from tryptophan (Trp) using Trp-dependent DE pathways and from an indolic Trp precursor via Trp-independent DE pathways. Plants can also obtain IAA by b-oxidation of indole-3- DE butyric acid (IBA), a second endogenous auxin, or by hydrolysing IAA DE conjugates, in which IAA is linked to amino acids, sugars or peptides. SY Auxin mediated signaling pathway. GO GO:0009734; auxin mediated signaling pathway HI Biological process: Auxin signaling pathway. CA Biological process. // ID B-cell activation. AC KW-0075 DE Protein involved in the activation and proliferation of B-cells. B- DE cells are activated by the binding of antigen to receptors on its cell DE surface which causes the cell to divide and proliferate. Some DE stimulated B-cells become plasma cells, which secrete antibodies. DE Others become long-lived memory B-cells which can be stimulated at a DE later time to differentiate into plasma cells. GO GO:0042113; B cell activation HI Biological process: B-cell activation. CA Biological process. // ID Bacterial flagellum. AC KW-0975 DE Bacterial protein present in a flagellum, a long hair-like cell suface DE appendage. The flagellar apparatus consists of the flagellar filament DE made of polymerized flagellin, the hook-like structure near the cell DE surface and a system of rings embedded in the cell enveloppe (the DE basal body or flagellar motor). The basal body and the hook anchor the DE whip-like filament to the cell surface. The flagellum is a rotating DE structure with switches propels the cell through a liquid medium. SY Bacterial flagella; Bacterial flagellar apparatus. HI Cellular component: Bacterial flagellum. CA Cellular component. // ID Bacterial flagellum biogenesis. AC KW-1005 DE Protein which is involved in the formation, organization or DE maintenance of the bacterial flagellum, a long hair-like cell suface DE appendage. The flagellar apparatus consists of the flagellar filament DE made of polymerized flagellin, the hook-like structure near the cell DE surface and a system of rings embedded in the cell enveloppe (the DE basal body or flagellar motor). The basal body and the hook anchor the DE whip-like filament to the cell surface. The flagellum is a rotating DE structure whose switches propels the cell through a liquid medium. SY Bacterial flagella biogenesis; Bacterial flagellar apparatus biogenesis. HI Biological process: Bacterial flagellum biogenesis. CA Biological process. // ID Bacterial flagellum protein export. AC KW-1006 DE Protein which is involved in the export of bacterial flagellar DE proteins. The bacterial flagellum export apparatus consists of six DE integral membrane proteins (FlhA, FlhB, FliO, FliP, FliQ and FliR) and DE three soluble proteins (FliH, FliI and FliJ), and is located at the DE base of the flagellum. This system is characterized by ATP hydrolysis DE and a lack of substrate signal peptide cleavage. SY Bacterial flagella protein export; Bacterial flagellar apparatus protein export; Bacterial flagellar protein export. HI Biological process: Transport; Protein transport; Bacterial flagellum protein export. CA Biological process. // ID Bacteriochlorophyll. AC KW-0076 DE Protein interacting with bacteriochlorophyll, a photosynthetic pigment DE found in non-oxygenic photosynthetic bacteria. It is a magnesium- DE porphyrin complex esterified to a long hydrophobic terpenoid side DE chain (the alcohol phytol). It differs from chlorophyll of oxygenic DE organisms in the substituents around the tetrapyrrole nucleus of the DE molecule, and in the absorption spectra. Different bacteria have DE different species of bacteriochlorophyll. GO GO:0042314; bacteriochlorophyll binding HI Ligand: Chromophore; Chlorophyll; Bacteriochlorophyll. CA Ligand. // ID Bacteriochlorophyll biosynthesis. AC KW-0077 DE Protein involved in the synthesis of bacteriochlorophylls. These DE photosynthetic pigments are magnesium-porphyrin complexes with a long DE hydrophobic terpenoid side chain (the alcohol phytol). Biosynthesis of DE bacteriochlorophyll is a light-independent reaction. SY Bacteriochlorophyll anabolism; SY Bacteriochlorophyll biosynthetic process; SY Bacteriochlorophyll formation; Bacteriochlorophyll synthesis. GO GO:0030494; bacteriochlorophyll biosynthetic process HI Biological process: Chlorophyll biosynthesis; Bacteriochlorophyll biosynthesis. CA Biological process. // ID Bacteriocin. AC KW-0078 DE Peptidic antibiotic, often plasmid encoded, produced by specific DE strains of bacteria that is lethal against other strains of the same DE or related species. E.g. bacteriocin, colicin, lantibiotic. GO GO:0005102; receptor binding GO GO:0019835; cytolysis HI Molecular function: Antimicrobial; Antibiotic; Bacteriocin. CA Molecular function. // ID Bacteriocin biosynthesis. AC KW-0871 DE Protein involved in the synthesis of a bacteriocin. SY Bacteriocin anabolism; Bacteriocin biosynthetic process; SY Bacteriocin formation; Bacteriocin synthesis. GO GO:0030152; bacteriocin biosynthetic process HI Biological process: Antibiotic biosynthesis; Bacteriocin biosynthesis. CA Biological process. // ID Bacteriocin immunity. AC KW-0079 DE Protein that confers to a bacteria immunity against a specific DE bacteriocin that it synthesizes. GO GO:0030153; bacteriocin immunity HI Biological process: Bacteriocin immunity. CA Biological process. // ID Bacteriocin transport. AC KW-0080 DE Protein involved in the export of a bacteriocin (bacterial antibiotic). GO GO:0043213; bacteriocin transport HI Biological process: Transport; Protein transport; Bacteriocin transport. CA Biological process. // ID Bacteriolytic enzyme. AC KW-0081 DE Enzyme, e.g. lysozyme or endopeptidase, essential for lysis of DE bacterial cell walls. GO GO:0003824; catalytic activity GO GO:0019835; cytolysis GO GO:0042742; defense response to bacterium HI Molecular function: Antimicrobial; Bacteriolytic enzyme. CA Molecular function. // ID Bait region. AC KW-0082 DE Protein having a peptide stretch which contains specific cleavage DE sites for different proteinases, and which enables inhibition of all DE four classes of proteinases. GO GO:0017114; wide-spectrum protease inhibitor activity HI Domain: Bait region. CA Domain. // ID Bardet-Biedl syndrome. AC KW-0083 DE Protein which, if defective, causes Bardet-Biedl syndrome (BBS), a DE genetically heterogeneous, autosomal recessive disorder. It is DE characterized by pigmentary retinopathy, obesity, polydactyly, DE hypogenitalism, renal malformation and mental retardation. Secondary DE features include diabetes mellitus, hypertension and congenital heart DE disease. SY BBS. HI Disease: Bardet-Biedl syndrome. CA Disease. // ID Bartter syndrome. AC KW-0910 DE Protein which, if defective, causes Bartter syndrome (BS). In general, DE Bartter syndrome refers to a group of autosomal recessive disorders DE characterized by often severe intravascular volume depletion due to DE renal salt-wasting associated with low blood pressure, hypokalemic DE alkalosis, hypercalciuria, and normal serum magnesium levels. Patients DE with Bartter syndrome are often critically ill from birth onwards, and DE their long-term clinical course may be complicated by nephrocalcinosis, DE leading to renal failure. Clinical disease results from defective renal DE reabsorption of sodium chloride in the thick ascending limb (TAL) of DE the Henle loop, where only 30% of filtered salt is normally reabsorbed. HI Disease: Bartter syndrome. CA Disease. // ID Basement membrane. AC KW-0084 DE Protein which is a component of the basement membrane, an DE extracellular matrix found under epithelial cells and around smooth DE and striated muscle cells. This matrix contains intrinsic DE macromolecular components such as collagen, laminin, and sulfated DE proteoglycans. GO GO:0005604; basement membrane HI Cellular component: Secreted; Extracellular matrix; Basement membrane. CA Cellular component. // ID Behavior. AC KW-0085 DE Protein which affects the behavior, the action or reaction, of an DE organism to a stimulus or situation. GO GO:0007610; behavior HI Biological process: Behavior. CA Biological process. // ID Bence-Jones protein. AC KW-0086 DE Protein which is a dimer of immunoglobulin light chains synthesized DE in large amounts by patients who have myeloma or bone marrow tumor. DE Bence-Jones protein is sufficiently small to be excreted by the kidney DE into urine. HI Molecular function: Bence-Jones protein. CA Molecular function. // ID Bernard Soulier syndrome. AC KW-0087 DE Protein which, if defective, causes Bernard Soulier syndrome (BSS), a DE familial coagulation disorder characterized by a prolonged bleeding DE time, unusually large platelets, and impaired prothrombin consumption. DE BSS is caused by a genetic deficiency in platelet membrane DE glycoprotein Ib alpha chain and platelet glycoprotein IX, where DE platelets aggregate normally but do not stick to collagen of the sub- DE endothelial membrane. SY BSS. HI Disease: Bernard Soulier syndrome. CA Disease. // ID Bile acid catabolism. AC KW-0088 DE Protein involved in degradation of bile acids. Bile acids, which exist DE mainly as bile salts, are a family of carboxylic acid derivatives of DE cholesterol which play an important role in the digestion and DE absorption of fat. They are made in the liver, stored in the DE gallblader, and secreted as needed into the intestines. SY Bile acid breakdown; Bile acid catabolic process; SY Bile acid degradation; Bile salt breakdown; SY Bile salt catabolic process; Bile salt catabolism; SY Bile salt degradation. GO GO:0030573; bile acid catabolic process HI Biological process: Lipid metabolism; Steroid metabolism; Bile acid catabolism. CA Biological process. // ID Bile pigment. AC KW-0089 DE Protein binding covalently at least one linear tetrapyrrole DE chromophore, e.g. bilirubin, biliverdin, bilifuscin, biliprasin, DE choleprasin, bilihumin, and bilicyanin. Bile pigments are produced by DE breaking down protoporphyrin IX derived from hemoglobin and other heme DE proteins. SY Bilin chromophore. HI Ligand: Chromophore; Bile pigment. CA Ligand. // IC Biological process. AC KW-9999 DE Keywords assigned to proteins because they are involved in a DE particular biological process. // ID Biological rhythms. AC KW-0090 DE Protein involved in the generation of rhythmic pattern of behaviors or DE activities, e.g. circadian rhythm which is a metabolic or behavioural DE rhythm within a cycle of 24 hours. SY Rhythmic process. GO GO:0048511; rhythmic process HI Biological process: Biological rhythms. CA Biological process. // ID Biomineralization. AC KW-0091 DE Protein involved in the process by which mineral crystals are DE deposited in an organized fashion in the matrix (either cellular or DE extracellular) of living organisms. Such process give rise to DE inorganic-based structures such as bone, tooth, ivory, shells, DE cuticles, corals or bacterial magnetosomes. GO GO:0001503; ossification HI Biological process: Biomineralization. CA Biological process. // ID Biotin. AC KW-0092 DE Protein which contains at least one biotin as prosthetic group or DE cofactor (e.g. some carboxylases and decarboxylases, and biotin DE carboxyl carrier protein) or which binds biotin, like avidin. Biotin DE is a water-soluble vitamin (member of the B complex vitamins) DE essential for fatty acid biosynthesis, catabolism, and it acts as a DE growth factor for many cells. SY Vitamin B7; Vitamin B8; Vitamin H; Coenzyme R; Biopeiderm. HI Ligand: Biotin. CA Ligand. // ID Biotin biosynthesis. AC KW-0093 DE Protein involved in the synthesis of biotin, a prosthetic group for DE some carboxylase and decarboxylase enzymes. This water-soluble vitamin DE is essential for fatty acid biosynthesis, catabolism, and it acts as a DE growth factor for many cells. SY Biopeiderm anabolism; Biopeiderm biosynthesis; SY Biopeiderm biosynthetic process; Biopeiderm formation; SY Biopeiderm synthesis; Biotin anabolism; Biotin biosynthetic process; SY Biotin formation; Biotin synthesis; Coenzyme R anabolism; SY Coenzyme R biosynthesis; Coenzyme R biosynthetic process; SY Coenzyme R formation; Coenzyme R synthesis; SY Vitamin B7 anabolism; Vitamin B7 biosynthetic process; SY Vitamin B7 formation; Vitamin B7 synthesis; SY Vitamin B8 anabolism; Vitamin B8 biosynthetic process; SY Vitamin B8 formation; Vitamin B8 synthesis; Vitamin H anabolism; SY Vitamin H biosynthesis; Vitamin H biosynthetic process; SY Vitamin H formation; Vitamin H synthesis. GO GO:0009102; biotin biosynthetic process HI Biological process: Biotin biosynthesis. CA Biological process. // ID Blood coagulation. AC KW-0094 DE Protein involved in blood clotting, a complex enzymatic cascade, in DE which the activated form of one factor catalyzes the activation of the DE next factor. Both, the extrinsic clotting pathway, induced by a DE damaged surface, and the intrinsic pathway, induced by a trauma, DE converge in a final common pathway to form cross-linked fibrin clots. GO GO:0007596; blood coagulation HI Biological process: Blood coagulation. CA Biological process. // ID Blood group antigen. AC KW-0095 DE Protein belonging to the set of cell surface antigens found chiefly, DE but not solely, on blood cells. More than fifteen different blood DE group systems are recognised in humans. In most cases the antigenic DE determinant resides in the carbohydrate chains of membrane DE glycoproteins or glycolipids. SY Agglutinogen. HI Molecular function: Blood group antigen. CA Molecular function. // ID Branched-chain amino acid biosynthesis. AC KW-0100 DE Protein involved in the synthesis of the essential aliphatic branched- DE chain amino acids leucine (Leu), isoleucine (Ile) and valine (Val). SY Branched-chain amino acid anabolism; SY Branched-chain amino acid biosynthetic process; SY Branched-chain amino acid formation; SY Branched-chain amino acid synthesis. GO GO:0009082; branched chain family amino acid biosynthetic process HI Biological process: Amino-acid biosynthesis; Branched-chain amino acid biosynthesis. CA Biological process. // ID Branched-chain amino acid catabolism. AC KW-0101 DE Protein involved in the degradation of the branched-chain amino acids DE leucine (Leu), isoleucine (Ile) and valine (Val). SY Branched-chain amino acid breakdown; SY Branched-chain amino acid catabolic process; SY Branched-chain amino acid degradation. GO GO:0009083; branched chain family amino acid catabolic process HI Biological process: Branched-chain amino acid catabolism. CA Biological process. // ID Bromination. AC KW-0102 DE Protein which is posttranslationally modified by the attachment of at DE least one bromine. SY Brominated; Bromated. HI PTM: Bromination. CA PTM. // ID Bromodomain. AC KW-0103 DE Protein containing at least one bromodomain. The bromodomain is a DE conserved region, approximately 70 amino acids, characteristic for a DE class of regulatory proteins. It mediates interactions with proteins DE that are necessary for transcriptional activation. HI Domain: Bromodomain. CA Domain. // ID Brugada syndrome. AC KW-0992 DE Protein which, if defective, causes Brugada syndrome, a heart disease DE characterized by an electrocardiogram pattern showing ST segment DE elevation in right precordial leads (V1 to V3), incomplete or complete DE right bundle branch block, and ventricular tachyarrhythmia. In some DE cases, tachycardia does not terminate spontaneously and it may DE degenerate into ventricular fibrillation and lead to sudden death. SY BRS. HI Disease: Brugada syndrome. CA Disease. // ID c-di-GMP. AC KW-0973 DE Protein whose function is c-di-GMP-dependent or which catalyzes its DE hydrolysis. c-di-GMP is the abbreviation for cyclic di-GMP, bis-(3'- DE 5') cyclic diguanylic acid. It acts as a bacterial second messenger. SY 3',5'-cyclic di-GMP; Cyclic dinucleotide di-GMP; Cyclic diguanylate; SY Bis-(3'-5')-cyclic dimeric guanosine monophosphate; c-(Gpgp); cGpGp; SY Guanosine 3',5'-cyclic monophosphate; 3'-5'-cyclic diguanylic acid; SY Bis-(3'-5') cyclic diguanylic acid; Cyclic diguanylic acid; SY Cyclic-bis(3',5')diguanylic acid. HI Ligand: c-di-GMP. CA Ligand. // ID Cadmium. AC KW-0104 DE Protein which binds at least one cadmium atom, or protein whose DE function is cadmium-dependent. Cadmium is a heavy metal, chemical DE symbol Cd. SY Cd; Cadmium ion. GO GO:0046870; cadmium ion binding HI Ligand: Cadmium. WW http://www.webelements.com/webelements/elements/text/Cd/ CA Ligand. // ID Cadmium resistance. AC KW-0105 DE Protein that confers, on bacteria and other microorganisms, the DE ability to withstand the transition metal cadmium (Cd). SY Cadmium ion resistance; Cd resistance; Resistance to cadmium; SY Resistance to cadmium ion; Resistance to Cd. GO GO:0046686; response to cadmium ion HI Biological process: Cadmium resistance. CA Biological process. // ID Calcium. AC KW-0106 DE Protein which binds at least one calcium atom, or protein whose function DE is calcium-dependent. Calcium is a metal, chemical symbol Ca. Calcium is DE essential for a variety of bodily functions, such as neurotransmission, DE muscle contraction and proper heart function. SY Ca; Calcium ion. GO GO:0005509; calcium ion binding HI Ligand: Calcium. WW http://www.webelements.com/webelements/elements/text/Ca/ CA Ligand. // ID Calcium channel. AC KW-0107 DE Cell membrane glycoprotein forming a channel in a biological membrane DE selectively permeable to calcium ions. Calcium is essential for a DE variety of bodily functions, such as neurotransmission, muscle DE contraction and proper heart function. SY Ca channel; Calcium ion channel. GO GO:0005262; calcium channel activity HI Molecular function: Ionic channel; Calcium channel. HI Biological process: Transport; Ion transport; Calcium transport; Calcium channel. HI Ligand: Calcium; Calcium channel. CA Molecular function. // ID Calcium channel inhibitor. AC KW-0108 DE Protein which interferes with the function of calcium channels which DE are membrane proteins forming a channel in a biological membrane DE selectively permeable to calcium ions. They are found in various DE venoms from snakes, scorpions and spiders. SY Ca channel inhibitor; Calcium ion channel inhibitor. GO GO:0019855; calcium channel inhibitor activity HI Molecular function: Toxin; Ionic channel inhibitor; Calcium channel inhibitor. CA Molecular function. // ID Calcium transport. AC KW-0109 DE Protein involved in the transport of calcium ions. Calcium is DE essential for a variety of bodily functions, such as DE neurotransmission, muscle contraction and proper heart function. SY Ca transport; Calcium ion transport. GO GO:0006816; calcium ion transport HI Biological process: Transport; Ion transport; Calcium transport. HI Ligand: Calcium; Calcium transport. CA Biological process. // ID Calcium/phospholipid-binding. AC KW-0111 DE Protein which contains at least one binding site for calcium and DE phospholipid. For example, proteins with annexin repeats, of which a DE pair may form one binding site for calcium and phospholipid, or DE some proteins with C2 domains. SY Calcium-dependent phospholipid binding. GO GO:0005544; calcium-dependent phospholipid binding HI Ligand: Calcium; Calcium/phospholipid-binding. CA Ligand. // ID Calmodulin-binding. AC KW-0112 DE Protein which binds at least one calmodulin, an ubiquitous small DE calcium-binding protein. Its binding to proteins may cause a DE conformational change which either activates or inactivates their DE function. GO GO:0005516; calmodulin binding HI Ligand: Calmodulin-binding. CA Ligand. // ID Calvin cycle. AC KW-0113 DE Protein involved in the cycle of biochemical reactions responsible for DE photosynthetic CO(2) fixation in many photosynthetic bacteria and in DE the stroma of plant chloroplasts. The energy and reducing power for DE this reaction are provided by the ATP and NADPH produced during the DE light reactions of photosynthesis. The Calvin cycle is the only DE photosynthetic pathway in C3 plants. In C4 and CAM plants CO(2) is DE initially fixed into other organic acids that are subsequently DE decarboxylated to release CO(2) to the Calvin cycle. Non- DE photosynthetic organism (e.g. Rhizobium) also use the cycle to fix DE CO(2). SY Calvin-Benson cycle; Reductive pentose phosphate cycle. GO GO:0019253; reductive pentose-phosphate cycle HI Biological process: Calvin cycle. CA Biological process. // ID cAMP. AC KW-0114 DE Protein whose function is cAMP-dependent or which catalyzes its DE hydrolysis. cAMP is the abbreviation for cyclic AMP, adenosine 3',5'- DE cyclic monophosphate, the first second messenger hormone signaling DE system to be characterised. It is generated from ATP by the action of DE adenyl cyclase that is coupled to hormone receptors by G proteins. DE cAMP activates a specific protein kinase and is inactivated by DE phosphodiesterase action giving 5'AMP. SY 3',5'-cyclic AMP; Adenosine 3',5'-phosphate; SY Adenosine-3',5'-cyclic-monophosphate; Cyclic adenylic acid; SY Cyclic AMP. HI Ligand: cAMP. CA Ligand. // ID cAMP biosynthesis. AC KW-0115 DE Protein involved in the synthesis of cAMP. cAMP is the abbreviation for DE cyclic AMP, adenosine 3',5'-cyclic monophosphate. SY 3',5'-cyclic AMP anabolism; 3',5'-cyclic AMP biosynthesis; SY 3',5'-cyclic AMP biosynthetic process; 3',5'-cyclic AMP formation; SY 3',5'-cyclic AMP synthesis; Adenosine 3',5'-phosphate anabolism; SY Adenosine 3',5'-phosphate biosynthesis; SY Adenosine 3',5'-phosphate biosynthetic process; SY Adenosine 3',5'-phosphate formation; SY Adenosine 3',5'-phosphate synthesis; SY Adenosine-3',5'-cyclic-monophosphate anabolism; SY Adenosine-3',5'-cyclic-monophosphate biosynthesis; SY Adenosine-3',5'-cyclic-monophosphate biosynthetic process; SY Adenosine-3',5'-cyclic-monophosphate formation; SY Adenosine-3',5'-cyclic-monophosphate synthesis; cAMP anabolism; SY cAMP biosynthetic process; cAMP formation; cAMP synthesis; SY Cyclic adenylic acid anabolism; Cyclic adenylic acid biosynthesis; SY Cyclic adenylic acid biosynthetic process; SY Cyclic adenylic acid formation; Cyclic adenylic acid synthesis; SY Cyclic AMP anabolism; Cyclic AMP biosynthesis; SY Cyclic AMP biosynthetic process; Cyclic AMP formation; SY Cyclic AMP synthesis. GO GO:0006171; cAMP biosynthetic process HI Biological process: cAMP biosynthesis. CA Biological process. // ID cAMP-binding. AC KW-0116 DE Protein which binds at least one cAMP. cAMP is the abbreviation for DE cyclic AMP, adenosine 3',5'-cyclic monophosphate. SY 3',5'-cyclic AMP-binding; Adenosine 3',5'-phosphate-binding; SY Adenosine-3',5'-cyclic-monophosphate-binding; SY Cyclic adenylic acid-binding; Cyclic AMP-binding. GO GO:0030552; cAMP binding HI Ligand: Nucleotide-binding; cAMP-binding. HI Ligand: cAMP; cAMP-binding. CA Ligand. // ID Capsid assembly. AC KW-0118 DE Viral protein that helps in the assembly of the capsid proteins, DE but is not integrated in the virion. SY Coat assembly; Viral capsid assembly. GO GO:0019069; viral capsid assembly HI Biological process: Capsid assembly. CA Biological process. // ID Capsid maturation. AC KW-0917 DE Viral protein involved in the maturation of the procapsid into the DE mature capsid. Maturation usually involves proteolysis events and DE changes in the folding of the capsid proteins. SY Viral procapsid maturation. GO GO:0046797; viral procapsid maturation HI Biological process: Capsid maturation. CA Biological process. // ID Capsid protein. AC KW-0167 DE Structural protein of the virion that protects the nucleic acids of DE the virus. SY Coat protein. GO GO:0005198; structural molecule activity GO GO:0019028; viral capsid HI Cellular component: Virion; Capsid protein. CA Cellular component. // ID Capsule. AC KW-0875 DE Protein which is part of a capsule, the protective structure DE surrounding some bacteria or fungi. The bacterial capsule is a layer DE of material, usually polysaccharide, attached to the cell wall DE possibly via covalent attachments to either phospholipid or lipid-A DE molecules. It has several functions: promote bacterial adhesion to DE surfaces or interaction with other organisms; act as a permeability DE barrier, as a defense mechanism against phagocytosis and/or as a DE nutrient reserve. Among pathogens, capsule formation often correlates DE with pathogenicity. The fungal capsule is an extracellular layer which DE lies outside the cell wall and it is usually composed of DE polysaccharides. It protects the cell from different environmental DE dangers such as phagocytosis, dessication, etc. HI Cellular component: Secreted; Capsule. CA Cellular component. // ID Capsule biogenesis/degradation. AC KW-0972 DE Protein which is involved in the formation, organization, maintenance DE or degradation of the capsule. The capsule is a protective structure DE surrounding some bacteria or fungi. The bacterial capsule is a layer DE of material, usually polysaccharide, attached to the cell wall DE possibly via covalent attachments to either phospholipid or lipid-A DE molecules. The fungal capsule is an extracellular layer which lies DE outside the cell wall and it is usually composed of polysaccharides. HI Biological process: Capsule biogenesis/degradation. CA Biological process. // ID Carbohydrate metabolism. AC KW-0119 DE Protein participating in biochemical reactions in which carbohydrates DE are involved. Carbohydrate is a general term for sugars and related DE compounds with the general formula Cn(H2O)n. The smallest are DE monosaccharides (e.g. glucose); polysaccharides (e.g. starch, DE cellulose, glycogen) can be large and vary in length. SY Carbohydrate metabolic process; Sugar metaabolism; SY Sugar metabolic process. GO GO:0005975; carbohydrate metabolic process HI Biological process: Carbohydrate metabolism. CA Biological process. // ID Carbon dioxide fixation. AC KW-0120 DE Protein involved in the process of carbon dioxide fixation, e.g. DE incorporation of carbon dioxide into carbohydrates by photosynthetic DE organisms or formation of oxaloacetate from pyruvate. SY Carbon utilization by fixation of carbon dioxide; SY Carbon utilization by fixation of CO(2); SY Carbon utilization by fixation of CO2; CO(2) fixation; CO2 fixation. GO GO:0015977; carbon utilization by fixation of carbon dioxide HI Biological process: Carbon dioxide fixation. CA Biological process. // ID Carboxypeptidase. AC KW-0121 DE Protein that hydrolyzes a C-terminal peptide bond in polypeptide DE chains. GO GO:0004180; carboxypeptidase activity HI Molecular function: Hydrolase; Protease; Carboxypeptidase. CA Molecular function. // ID Cardiomyopathy. AC KW-0122 DE Protein which, if defective, causes cardiomyopathy, a chronic disorder DE which affects the heart muscle causing a reduced pumping function. It DE is a major cause of morbidity and mortality. HI Disease: Cardiomyopathy. CA Disease. // ID Cardiotoxin. AC KW-0123 DE Protein which has a poisonous or deleterious effect upon the heart or DE other parts of the cardiovascular system. GO GO:0009405; pathogenesis HI Molecular function: Toxin; Cardiotoxin. CA Molecular function. // ID Carnitine biosynthesis. AC KW-0124 DE Protein involved in the biosynthesis of carnitine (L-3-hydroxy-4, DE N,N,N-trimethylaminobutyrate), an essential metabolite with a number DE of indispensable roles in intermediary metabolism. SY 3-hydroxy-4-(trimethylammonio)butanoate anabolism; SY 3-hydroxy-4-(trimethylammonio)butanoate biosynthesis; SY 3-hydroxy-4-(trimethylammonio)butanoate biosynthetic process; SY 3-hydroxy-4-(trimethylammonio)butanoate formation; SY 3-hydroxy-4-(trimethylammonio)butanoate synthesis; SY Carnitine anabolism; Carnitine biosynthetic process; SY Carnitine formation; Carnitine synthesis; SY Gamma-trimethyl-hydroxybutyrobetaine anabolism; SY Gamma-trimethyl-hydroxybutyrobetaine biosynthesis; SY Gamma-trimethyl-hydroxybutyrobetaine biosynthetic process; SY Gamma-trimethyl-hydroxybutyrobetaine formation; SY Gamma-trimethyl-hydroxybutyrobetaine synthesis. GO GO:0045329; carnitine biosynthetic process HI Biological process: Carnitine biosynthesis. CA Biological process. // ID Carotenoid biosynthesis. AC KW-0125 DE Protein involved in the synthesis of carotenoids, a group of DE orange, yellow, red, purple or brown pigments in plants, bacteria and DE some fungi. Carotenoids, which comprise the carotenes and the DE xanthophylls, are long polyisoprenoid molecules having conjugated DE double bonds enabling light absorbtion. SY Carotenoid anabolism; Carotenoid biosynthetic process; SY Carotenoid formation; Carotenoid synthesis. GO GO:0016117; carotenoid biosynthetic process HI Biological process: Carotenoid biosynthesis. CA Biological process. // ID Cataract. AC KW-0898 DE Protein which, if defective, causes cataract, a partial or complete DE ocular opacity that affects the crystalline lens or its capsule, DE leading to impaired vision or blindness. The many types of cataract DE are classified by their morphology (size, shape, location) or DE etiology (cause and time of occurrence). Cataracts may occur as an DE isolated anomaly, as part of generalized ocular developmental defects, DE or as a component of a multisystem disorder. HI Disease: Cataract. CA Disease. // ID Catecholamine biosynthesis. AC KW-0127 DE Protein involved in the synthesis of catecholamines, which are amine DE derivatives of catechol (2-hydroxyphenol). They are synthesized from DE the amino acid tyrosine (Tyr) in sympathetic-nerve terminals and in DE the adrenal gland. Catecholamines act as hormones or neuro- DE transmitters, e.g. adrenaline, noradrenaline and dopamine. SY Catecholamine anabolism; Catecholamine biosynthetic process; SY Catecholamine formation; Catecholamine synthesis. GO GO:0042423; catecholamine biosynthetic process HI Biological process: Catecholamine biosynthesis. CA Biological process. // ID Catecholamine metabolism. AC KW-0128 DE Protein participating the biochemical reactions in which DE catecholamines are involved. Catecholamines are amine derivatives of DE catechol (2-hydroxyphenol). They are synthesized from the amino acid DE tyrosine (Tyr) in sympathetic-nerve terminals and in the adrenal DE gland. Catecholamines act as hormones or neuro-transmitters, e.g. DE adrenaline, noradrenaline and dopamine. SY Catecholamine metabolic process. GO GO:0006584; catecholamine metabolic process HI Biological process: Catecholamine metabolism. CA Biological process. // ID CBS domain. AC KW-0129 DE Protein containing at least one CBS domain, a conserved domain found DE in a wide range of proteins, which is named after cystathionine beta- DE synthase (CBS), an enzyme that contains 2 copies of this domain. HI Domain: CBS domain. CA Domain. // ID Cell adhesion. AC KW-0130 DE Protein involved in the adherence of cells to other cells or to a DE matrix. Cell adhesion is mediated by cell surface proteins. GO GO:0005515; protein binding GO GO:0007155; cell adhesion HI Biological process: Cell adhesion. CA Biological process. // ID Cell cycle. AC KW-0131 DE Protein involved in the complex series of events by which the cell DE duplicates its contents and divides into two. The eukaryotic cell DE cycle can be divided in four phases termed G1 (first gap period), S DE (synthesis, phase during which the DNA is replicated), G2 (second gap DE period) and M (mitosis). The prokaryotic cell cycle typically involves DE a period of growth followed by DNA replication, partition of DE chromosomes, formation of septum and division into two similar or DE identical daughter cells. GO GO:0007049; cell cycle HI Biological process: Cell cycle. CA Biological process. // ID Cell division. AC KW-0132 DE Protein involved in the separation of one cell into two daughter DE cells. In eukaryotic cells, cell division includes the nuclear DE division (mitosis) and the subsequent cytoplasmic division DE (cytokinesis). GO GO:0051301; cell division HI Biological process: Cell cycle; Cell division. CA Biological process. // ID Cell junction. AC KW-0965 DE Protein found in or associated with a cell junction, a cell-cell or DE cell-extracellular matrix contact within a tissue of a multicellular DE organism, especially abundant in epithelia. In vertebrates, there are DE three major types of cell junctions: anchoring junctions (e.g. DE adherens junctions), communicating junctions (e.g. gap junctions) and DE occluding junctions (e.g. tight junctions). GO GO:0030054; cell junction HI Cellular component: Cell junction. WW http://www.ncbi.nlm.nih.gov/books/bv.fcgi?rid=mboc4.section.3469 CA Cellular component. // ID Cell inner membrane. AC KW-0997 DE Protein found in or associated with the bacterial cell inner membrane, DE a selectively permeable membrane which separates the cytoplasm from DE the periplasm in Gram-negative bacterial cells. SY Inner membrane. HI Cellular component: Membrane; Cell membrane; Cell inner membrane. CA Cellular component. // ID Cell membrane. AC KW-1003 DE Protein found in or associated with the cell membrane, a selectively DE permeable membrane which separates the cytoplasm from its DE surroundings. In most archaea, bacteria, fungi, plants, and algae the DE cell membrane is enclosed by at least the cell wall. Also used when it DE is not known if the protein is found in or associated with the inner DE or outer cell membrane. SY Plasma membrane; Plasmalemma; Cytoplasmic membrane. GO GO:0005886; plasma membrane HI Cellular component: Membrane; Cell membrane. CA Cellular component. // ID Cell outer membrane. AC KW-0998 DE Protein found in or associated with the bacterial cell outer membrane, DE a selectively permeable membrane which separates the bacterial DE periplasm from the Gram-negative bacterial cell surroundings. In most DE bacteria, the cell membrane is enclosed by at least the cell wall. SY Outer membrane. HI Cellular component: Membrane; Cell membrane; Cell outer membrane. CA Cellular component. // ID Cell projection. AC KW-0966 DE Protein found in or associated with a cell protrusion such as DE pseudopodium, filopodium, lamellipodium, growth cone, flagellum, DE acrosome or axon, or bacterial comet tail. These membrane- DE cytoskeleton-coupled processes are involved in many biological DE functions, such as cell motility, cancer-cell invasion, endocytosis, DE phagocytosis, exocytosis, pathogen infection, neurite extension and DE cytokinesis. SY Cell protrusion. GO GO:0042995; cell projection HI Cellular component: Cell projection. CA Cellular component. // ID Cell shape. AC KW-0133 DE Protein involved in the formation and maintenance of the cell shape, DE the physical dimensions of a cell. In most plants, algae, bacteria and DE fungi the cell wall is responsible for the shape of the cells. GO GO:0008360; regulation of cell shape HI Biological process: Cell shape. CA Biological process. // ID Cell wall. AC KW-0134 DE Protein found in or associated with a complex and rigid layer DE surrounding the cell. Cell walls are found in bacteria, archaea, DE fungi, plants, and algae. The cell wall is surrounded by the outer DE membrane in gram-negative bacteria, and envelopes the inner or plasma DE membrane in gram-negative, gram-positive and acid-fast bacteria. Cell DE walls of bacteria contain peptidoglycan whereas those of archaea do DE not. Some archaea may contain pseudopeptidoglycan, which is composed DE of N-acetyltalosaminuronic acid, instead of N-acetyl muramic acid in DE peptidoglycan. The plant cell wall is made of fibrils of cellulose DE embedded in a matrix of several other kinds of polymers such as pectin DE and lignin. Algal cell walls are usually composed of cellulose, DE glycoproteins, sporopollenin, calcium and various polysaccharides such DE as manosyl, xylanes, alginic acid. Diatom cell walls (or frustules) DE contain silica. The cell wall plays a role in cell shape, cell DE stability and development, and protection against environmental DE dangers. GO GO:0005618; cell wall HI Cellular component: Secreted; Cell wall. CA Cellular component. // ID Cell wall biogenesis/degradation. AC KW-0961 DE Protein which is involved in the formation, organization, maintenance DE or degradation of the cell wall. The cell wall is an extracellular DE layer outside the cell membrane which protects the cell against DE mechanical damage, osmotic strength and which determines the cell DE shape. It is prominent in most plants, algae, bacteria and fungi. GO GO:0007047; cell wall organization and biogenesis HI Biological process: Cell wall biogenesis/degradation. CA Biological process. // IC Cellular component. AC KW-9998 DE Keywords assigned to proteins because they are found in a specific DE cellular or extracellular component. // ID Cellulose biosynthesis. AC KW-0135 DE Protein involved in the synthesis of cellulose, a linear polymer of DE (1-4)-beta-linked D-glucose subunits. It is the most abundant cell- DE wall and structural polysaccharide in plants and it is also found in DE some lower invertebrates. Cellulose is the major component of wood and DE thus of paper. Cotton is the purest natural form of cellulose. As a DE raw material, it forms the basis for many derivatives used in DE chromatography, ion exchange materials, explosives manufacturing and DE pharmaceutical preparations. SY Cellulose anabolism; Cellulose biosynthetic process; SY Cellulose formation; Cellulose synthesis. GO GO:0030244; cellulose biosynthetic process HI Biological process: Cellulose biosynthesis. CA Biological process. // ID Cellulose degradation. AC KW-0136 DE Protein involved in the conversion of cellulose into D-glucose. DE Cellulose is the most abundant cell-wall and structural polysaccharide DE in plants and it is also found in some lower invertebrates. Cellulose DE is the major component of wood and thus of paper. Cotton is the purest DE natural form of cellulose. As a raw material, it forms the basis for DE many derivatives used in chromatography, ion exchange materials, DE explosives manufacturing and pharmaceutical preparations. SY Cellulose breakdown; Cellulose catabolic process; SY Cellulose catabolism. GO GO:0030245; cellulose catabolic process HI Biological process: Carbohydrate metabolism; Polysaccharide degradation; Cellulose degradation. CA Biological process. // ID Centromere. AC KW-0137 DE Protein which binds centromeres or which is required for the assembly DE and movement of centromeres. Centromeres are the regions of replicated DE eukaryotic chromosomes where the two chromatids are joined together. SY Chromosome pericentric region. GO GO:0000775; chromosome, pericentric region HI Cellular component: Centromere. CA Cellular component. // ID CF(0). AC KW-0138 DE Protein component of the F-type ATP synthase complex CF(0) or protein DE involved in its assembly. F-type ATPases consist of the two complex DE components CF(0), the membrane proton channel, and CF(1), the DE catalytic core. SY ATPase membrane proton channel; SY Proton-transporting ATP synthase complex coupling factor F(0). GO GO:0045263; proton-transporting ATP synthase complex, coupling factor F(o) HI Cellular component: CF(0). HI Biological process: Transport; Ion transport; Hydrogen ion transport; CF(0). CA Cellular component. // ID CF(1). AC KW-0139 DE Protein component of the F-type ATP synthase complex CF(1) or protein DE involved in its assembly. F-type ATPases consist of the two complex DE components CF(0), the membrane proton channel, and CF(1), the DE catalytic core. SY ATPase catalytic core; SY Proton-transporting ATP synthase complex catalytic core F(1). GO GO:0045261; proton-transporting ATP synthase complex, catalytic core F(1) HI Cellular component: CF(1). HI Biological process: ATP synthesis; CF(1). CA Cellular component. // ID cGMP. AC KW-0140 DE Protein whose function is cGMP-dependent or which catalyzes its DE hydrolysis. cGMP is the abbreviation for cyclic GMP, guanosine 3',5'- DE cyclic monophosphate. It acts as a second messenger. SY 3',5'-cyclic GMP; Cyclic GMP; Cyclic guanylic acid; SY Guanosine 3',5'-cyclic monophosphate; Guanosine 3',5'-phosphate. HI Ligand: cGMP. CA Ligand. // ID cGMP biosynthesis. AC KW-0141 DE Protein involved in the synthesis of cGMP. cGMP is the abbreviation DE for cyclic GMP, guanosine 3',5'-cyclic monophosphate. SY 3',5'-cyclic GMP anabolism; 3',5'-cyclic GMP biosynthesis; SY 3',5'-cyclic GMP biosynthetic process; 3',5'-cyclic GMP formation; SY 3',5'-cyclic GMP synthesis; cGMP anabolism; cGMP biosynthetic process; SY cGMP formation; cGMP synthesis; Cyclic GMP anabolism; SY Cyclic GMP biosynthesis; Cyclic GMP biosynthetic process; SY Cyclic GMP formation; Cyclic GMP synthesis; SY Cyclic guanylic acid anabolism; Cyclic guanylic acid biosynthesis; SY Cyclic guanylic acid biosynthetic process; SY Cyclic guanylic acid formation; Cyclic guanylic acid synthesis; SY Guanosine 3',5'-phosphate anabolism; SY Guanosine 3',5'-phosphate biosynthesis; SY Guanosine 3',5'-phosphate biosynthetic process; SY Guanosine 3',5'-phosphate formation; SY Guanosine 3',5'-phosphate synthesis; SY Guanosine-3',5'-cyclic-monophosphate anabolism; SY Guanosine-3',5'-cyclic-monophosphate biosynthesis; SY Guanosine-3',5'-cyclic-monophosphate biosynthetic process; SY Guanosine-3',5'-cyclic-monophosphate formation; SY Guanosine-3',5'-cyclic-monophosphate synthesis. GO GO:0006182; cGMP biosynthetic process HI Biological process: cGMP biosynthesis. CA Biological process. // ID cGMP-binding. AC KW-0142 DE Protein which binds at least one cGMP. cGMP is the abbreviation for DE cyclic GMP, guanosine 3',5'-cyclic monophosphate. SY 3',5'-cyclic GMP-binding; Cyclic GMP-binding; SY Cyclic guanylic acid-binding; SY Guanosine 3',5'-cyclic monophosphate-binding; SY Guanosine 3',5'-phosphate-binding. GO GO:0030553; cGMP binding HI Ligand: Nucleotide-binding; cGMP-binding. HI Ligand: cGMP; cGMP-binding. CA Ligand. // ID Chaperone. AC KW-0143 DE Protein which is transiently involved in the noncovalent folding, DE assembly and/or disassembly of other polypeptides or RNA molecules, DE including any transport and oligomerisation processes they may DE undergo, and the refolding and reassembly of protein and RNA molecules DE denatured by stress. Though involved in these processes, chaperones DE are not an integral part of these functioning molecules. Also used for DE metallochaperones, which function to provide a metal directly to DE target proteins while protecting this metal from scavengers. GO GO:0006457; protein folding HI Molecular function: Chaperone. CA Molecular function. // ID Charcot-Marie-Tooth disease. AC KW-0144 DE Protein which, if defective, causes Charcot-Marie-Tooth disease (CMT), DE a heterogeneous group of hereditary motor and sensory neuropathies DE (HMSN) characterized by distal muscular atrophy and weakness, hollow DE feet, absent or diminished deep-tendon reflexes and impaired DE sensation. CMT is classified into two major classes. CMT type 1 DE includes demyelinating neuropathies that are characterized by nerve DE conductance velocities (NCVs) less than 38m/s and segmental DE demyelination and remyelination; CMT type 2 includes axonal DE neuropathies that are characterized by normal or mildly reduced NCVs DE and chronic axonal degeneration and regeneration. HI Disease: Charcot-Marie-Tooth disease. CA Disease. // ID Chemotaxis. AC KW-0145 DE Protein involved in the movement of a cell, or organism, along a DE concentration gradient of a chemotactic agent, such as a protein which DE causes, mediates or responds to chemotaxis. Chemotactic molecules such DE as sugars, peptides, cell metabolites, cell-wall or membrane lipids DE bind to cell surface receptors and trigger activation of intracellular DE signaling pathways, as well as remodeling of the cytoskeleton through DE the activation or inhibition of various actin-binding proteins. GO GO:0006935; chemotaxis HI Biological process: Chemotaxis. CA Biological process. // ID Chitin degradation. AC KW-0146 DE Protein involved in the breakdown of chitin, a linear polysaccharide DE consisting of (1->4)-beta-linked D-glucosamine residues, most of which DE are N-acetylated. SY Chitin breakdown; Chitin catabolic process; Chitin catabolism. GO GO:0006032; chitin catabolic process HI Biological process: Carbohydrate metabolism; Polysaccharide degradation; Chitin degradation. CA Biological process. // ID Chitin-binding. AC KW-0147 DE Protein which binds chitin, a linear polysaccharide consisting of DE (1->4)-beta-linked D-glucosamine residues, most of which are N- DE acetylated. The 30-43 amino acids long chitin-binding domain contains DE several conserved glycine and cysteines residues. The conserved DE cysteines form disulfide bonds. Chitin-binding domains have been found DE in plant, fungal and bacterial proteins. GO GO:0008061; chitin binding HI Ligand: Chitin-binding. CA Ligand. // ID Chloride. AC KW-0868 DE Protein which binds at least one chloride, or protein whose function DE is chloride-dependent. Chloride is a negatively-charged ion, which is DE abbreviated Cl(-). SY Chloride ion; Chloride anion; Cl-. GO GO:0031404; chloride ion binding HI Ligand: Chloride. WW http://www.webelements.com/webelements/elements/text/Cl/ CA Ligand. // ID Chloride channel. AC KW-0869 DE Protein which is part of an anion channel found in the plasma lemma DE and in intracellular membranes. These channels are permeable for DE various anions, such as iodide, bromide, but also for nitrates, DE phosphates and even negatively charged amino acids. They are called DE chloride channels, because chloride is the most abundant anion and the DE predominant permeating species in all organisms. They have been DE classified according to their gating mechanisms, which may depend on DE changes in the transmembrane electric field (voltage-dependent/gated DE chloride channels, e.g. ClC family), on a protein kinase/nucleotide DE mediated mechanism (CFTR), an increase in intracellular calcium DE (calcium activated chloride channels, e.g. CaCC), cell swelling DE (volume-regulated anion channels, e.g. VRAC) or binding of a ligand, DE e.g. glycine or - aminobutyric acid (GABA) activated channels. In DE contrast with cation channels, they are not involved in the initiation DE or spread of excitation, but in the regulation of excitability in DE nerve and muscle. They also participate in many housekeeping DE processes, such as volume regulation, pH regulation in organelles, DE electrogenesis and control of synaptic activity. The chloride channels DE are crucial for transepithelial transport and the control of water DE flow, and often provide unexpected permeation pathways for a large DE variety of anions. SY Chloride ion channel; Chloride anion channel; Cl- channel. GO GO:0005254; chloride channel activity HI Molecular function: Ionic channel; Chloride channel. HI Biological process: Transport; Ion transport; Chloride channel. HI Ligand: Chloride; Chloride channel. CA Molecular function. // ID Chloride channel inhibitor. AC KW-0870 DE Protein which interferes with the function of chloride channels which DE are membrane proteins forming a channel in a biological membrane DE selectively permeable to chloride ions. SY Chloride ion channel inhibitor; Chloride anion channel inhibitor; SY Cl- channel inhibitor. GO GO:0019869; chloride channel inhibitor activity HI Molecular function: Toxin; Ionic channel inhibitor; Chloride channel inhibitor. CA Molecular function. // ID Chlorophyll. AC KW-0148 DE Protein which interacts with chlorophyll, the major light-absorbing DE pigment in most oygenic green organisms. Higher plants contain DE chlorophyll a and chlorophyll b which are magnesium-porphyrin DE complexes esterified to a long hydrophobic terpenoid side chain (the DE alcohol phytol). HI Ligand: Chromophore; Chlorophyll. CA Ligand. // ID Chlorophyll biosynthesis. AC KW-0149 DE Protein involved in the synthesis of chlorophylls. These DE photosynthetic pigments are magnesium-porphyrin complexes with a long DE hydrophobic terpenoid side chain (the alcohol phytol). Angiosperms DE have only a light-dependent pathway for chlorophyll biosynthesis, DE other oxygenic organisms seem to have both the light-dependent and the DE light-independent pathways. SY Chlorophyll anabolism; Chlorophyll biosynthetic process; SY Chlorophyll formation; Chlorophyll synthesis. GO GO:0015995; chlorophyll biosynthetic process HI Biological process: Chlorophyll biosynthesis. CA Biological process. // ID Chlorophyll catabolism. AC KW-0881 DE Protein involved in the degradation of chlorophylls. These DE photosynthetic pigments are magnesium-porphyrin complexes with a long DE hydrophobic terpenoid side chain (the alcohol phytol). SY Chlorophyll breakdown; Chlorophyll catabolic process; SY Chlorophyll degradation. GO GO:0015996; chlorophyll catabolic process HI Biological process: Chlorophyll catabolism. CA Biological process. // ID Chloroplast. AC KW-0150 DE Protein encoded by or localized in the chloroplast, the most common DE form of plastid, found in all photosynthetic organisms except DE glaucophyte algae. In green (photosynthesizing) tissue they house the DE machinery necessary for photosynthesis and CO(2) fixation. They are DE surrounded by between 2 and 4 membranes and contain thylakoids in DE green tissue. GO GO:0009507; chloroplast HI Cellular component: Plastid; Chloroplast. CA Cellular component. // ID Chlorosome. AC KW-0151 DE Photosynthetic light-harvesting complexes found in green bacteria. DE Chlorosomes are sac-like organelles appressed to the cytoplasmic DE membrane of the cell membrane. GO GO:0046858; chlorosome HI Cellular component: Chlorosome. HI Biological process: Photosynthesis; Chlorosome. CA Cellular component. // ID Cholesterol biosynthesis. AC KW-0152 DE Protein involved in the synthesis of cholesterol, the major sterol of DE higher animals. It is a component of cell membranes, especially of the DE plasma membrane. SY Cholesterol anabolism; Cholesterol biosynthetic process; SY Cholesterol formation; Cholesterol synthesis. GO GO:0006695; cholesterol biosynthetic process HI Biological process: Lipid synthesis; Steroid biosynthesis; Sterol biosynthesis; Cholesterol biosynthesis. CA Biological process. // ID Cholesterol metabolism. AC KW-0153 DE Protein which participates in the biochemical reactions where DE cholesterol is involved, including transport. Cholesterol is the major DE sterol of higher animals and an important component of cell membranes, DE especially of the plasma membrane. SY Cholesterol metabolic process. GO GO:0008203; cholesterol metabolic process HI Biological process: Lipid metabolism; Steroid metabolism; Cholesterol metabolism. CA Biological process. // ID Chondrogenesis. AC KW-0891 DE Protein involved in chondrogenesis, the mechanism of cartilage DE formation. Chondrogenesis proceeds through determination of cells and DE their aggregation into prechondrogenic condensations, differentiation DE into chondrocytes, and later maturation. The formation of the long DE bones requires a cartilage template. SY Cartilage biogenesis; Cartilage biosynthesis; Cartilage development; SY Cartilage formation. GO GO:0051216; cartilage development HI Biological process: Differentiation; Chondrogenesis. HI Molecular function: Developmental protein; Chondrogenesis. CA Biological process. // ID Chromate resistance. AC KW-0155 DE Protein that enables bacteria and other microorganisms to withstand DE chromate, a salt of chromic acid (H2CrO4). SY Resistance to chromate. GO GO:0046687; response to chromate HI Biological process: Chromate resistance. CA Biological process. // ID Chromatin regulator. AC KW-0156 DE Protein controlling the opening or closing of chromatin. GO GO:0016568; chromatin modification HI Molecular function: Chromatin regulator. CA Molecular function. // ID Chromatophore. AC KW-0994 DE Protein encoded by the chromatophore genome or a protein targeted to DE the chromatophore. The chromatophore is the photosynthetic inclusion DE found in Paulinella chromatophora, a photosynthetic thecate amoeba. It DE encodes and houses the machinery necessary for photosynthesis and DE CO(2) fixation; it also has the genetic capacity to synthesize some DE amino acids, some fatty acids and a few cofactors. It is not yet clear DE whether the chromatophore derives from the same endosymbiotic event DE that is thought to have led to all other plastids. It contains DE thylakoid membranes, and a residual peptidoglycan wall between the 2 DE envelope membranes. There are 1 or 2 chromatophores per cell. HI Cellular component: Plastid; Chromatophore. CA Cellular component. // ID Chromophore. AC KW-0157 DE Protein which interacts with one or more chromophores. A chromophore DE absorbs and transmits light energy. Originally it was used for visibly DE colored molecules, but it applies also to UV- and IR-absorbing DE molecules. GO GO:0018298; protein-chromophore linkage HI Ligand: Chromophore. CA Ligand. // ID Chromoplast. AC KW-0957 DE Protein found in or associated with a chromoplast, a plastid DE containing pigments other than chlorophyll. Found in flower, petals and DE fruit. GO GO:0009509; chromoplast HI Cellular component: Plastid; Chromoplast. CA Cellular component. // ID Chromosomal protein. AC KW-0158 DE Protein which is associated with chromosomal DNA, including histones, DE protamines and high mobility group proteins. SY Chromosome. GO GO:0005694; chromosome HI Cellular component: Chromosomal protein. CA Cellular component. // ID Chromosome partition. AC KW-0159 DE Protein involved in chromosome partition, the process by which newly DE replicated plasmids and chromosomes are actively segregated prior to DE cell division. E.g., par and soj which contribute to efficient DE chromosome partitioning by serving functions analogous to centromeres DE (i.e. pairing or positioning of sister chromosomes). SY Chromosome segregation. GO GO:0007059; chromosome segregation HI Biological process: Chromosome partition. CA Biological process. // ID Chromosomal rearrangement. AC KW-0160 DE Protein which can be altered by a structural chromosomal DE rearrangement. Structural rearrangements result from chromosome DE breakage, followed by reconstitution in an abnormal combination. DE Classes of chromosomal rearrangements include: deletions, duplications, DE insertions, inversions, translocations and transpositions. HI Coding sequence diversity: Chromosomal rearrangement. CA Coding sequence diversity. // ID Chronic granulomatous disease. AC KW-0161 DE Protein which, if defective, causes chronic granulomatous disease DE (CGD), a disease characterized by the failure of activated phagocytes DE to generate superoxide. SY CGD. HI Disease: Chronic granulomatous disease. CA Disease. // ID Chylomicron. AC KW-0162 DE Protein component of the chylomicrons or involved in their catabolism. DE Chylomicrons are the largest lipoprotein complexes with the lowest DE protein-to-lipid ratio. They are present in the blood or lymph and DE transport exogenous (dietary) cholesterol, triacylglycerols and other DE lipids from the intestine to the liver or to the adipose tissue. GO GO:0042627; chylomicron HI Cellular component: Chylomicron. CA Cellular component. // ID Cilium. AC KW-0969 DE Protein found in or associated with a cilium, a cell surface DE projection found at the surface of a large proportion of eukaryotic DE cells. The two basic types of cilia, motile (alternatively named DE flagella) and non-motile, collectively perform a wide variety of DE functions broadly encompassing cell/fluid movement and sensory DE perception. Their most prominent structural component is the axoneme DE which consists of nine doublet microtubules, with all motile cilia - DE except those at the embryonic node - containing an additional central DE pair of microtubules. The axonemal microtubules of all cilia nucleate DE and extend from a basal body, a centriolar structure most often DE composed of a radial array of nine triplet microtubules. In most DE cells, basal bodies associate with cell membranes and cilia are DE assembled as 'extracellular' membrane-enclosed compartments. SY Cilia. GO GO:0005929; cilium HI Cellular component: Cell projection; Cilium. WW http://www.ciliome.com CA Cellular component. // ID Cilium biogenesis/degradation. AC KW-0970 DE Protein which is involved in the formation, organization, maintenance DE and degradation of the cilium, a cell surface projection found at the DE surface of a large proportion of eukaryotic. Their most prominent DE structural component is the axoneme which consists of nine doublet DE microtubules, with all motile cilia - except those at the embryonic DE node - containing an additional central pair of microtubules. GO GO:0030030; cell projection organization and biogenesis HI Biological process: Cilium biogenesis/degradation. CA Biological process. // ID Citrate utilization. AC KW-0163 DE Protein which allows the utilization of the 6-carbon tricarboxylic acid DE citrate as a sole source of carbon and energy. GO GO:0005371; tricarboxylate secondary active transmembrane transporter activity HI Biological process: Citrate utilization. CA Biological process. // ID Citrullination. AC KW-0164 DE Protein which is posttranslationally modified by the deimination of DE one or more arginine residues. SY 2-amino-5-(carbamoylamino)pentanoic acid; Citrulline; SY N5-carbamoylornithine. HI PTM: Citrullination. CA PTM. // ID Cleavage on pair of basic residues. AC KW-0165 DE Protein which is posttranslationally modified by the cleavage on at DE least one pair of basic residues, in order to release one or more DE mature active peptides (such as hormones). HI PTM: Cleavage on pair of basic residues. CA PTM. // ID Coated pit. AC KW-0168 DE Protein which is a component of a coated pit. Coated pits are regions DE of the donor membrane where the assembly of the vesicle coat take DE place. The coat assembles from soluble protomers such as coat protein DE complex-I and coat protein complex-II. The components of the coat DE often define the intracellular sorting station, and contribute to both DE membrane deformation and local movement of the resulting transport DE intermediate following scission. During the first steps of the DE vesicle-mediated membrane transport, coated pits are internalized to DE form coated vesicles which transport proteins between distinct DE membrane-bound organelles. GO GO:0005905; coated pit HI Cellular component: Membrane; Coated pit. CA Cellular component. // ID Cobalamin. AC KW-0846 DE Protein which contains at least one cobalamin as cofactor, e.g. DE methylmalonyl-CoA mutase, or which binds and/or transports cobalamin, DE such as intrinsic factor or transcobalamins. Cobalamin, which is DE synthesized by microorganisms, has equatorial sites occupied by a DE tetrapyrrol ring structure (corrin ring) with a cobalt(III) ion in the DE center, one axial site occupied by an intramolecularly-bound DE dimethylbenzimidazole and the other axial site occupied by a number of DE different ligands such as water (aquacobalamin), cyanide DE (cyanocobalamin=vitamin B12), glutathione (glutathionylcobalamin), DE 5'deoxyadenosine (adenosylcobalamin=coenzyme B12) or a methyl group DE (methylcobalamin). It is a prosthetic group of certain mammalian DE enzymes, where it is essential for the normal maturation and development of DE erythrocytes. A deficiency in the diet or more frequently the failure to DE absorb the vitamin give rise to pernicious anemia. SY Vitamin B12. GO GO:0031419; cobalamin binding HI Ligand: Cobalt; Cobalamin. CA Ligand. // ID Cobalamin biosynthesis. AC KW-0169 DE Protein involved in the synthesis of cobalamin. Cobalamin, which is DE synthesized by microorganisms, has equatorial sites occupied by a DE modified porphyrin ring system, with two of the four pyrrol rings DE fused directly (without an intervening methine bridge). The modified DE porphyrin system binds a cobalt(III) ion in the center, and this is DE called a corrin ring system. One axial site is occupied usually by an DE intramolecularly-bound dimethylbenzimidazole nucleotide and the other DE axial site is occupied by a number of different ligands such as water DE (aquacobalamin), cyanide (cyanocobalamine=vitamin B12), glutathione DE (glutathionylcobalamine), 5'deoxyadenosine DE (adenosylcobalamine=coenzyme B12) or a methyl group (methylcobalamin). DE Vitamin B12, for instance, is a prosthetic group of certain mammalian DE enzymes, where it is essential for the normal maturation and DE development of erythrocytes. A deficiency in the diet or more DE frequently the failure to absorb the vitamin B12 give rise to DE pernicious anemia. SY Cobalamin anabolism; Cobalamin biosynthetic process; SY Cobalamin formation; Cobalamin synthesis; Vitamin B12 anabolism; SY Vitamin B12 biosynthesis; Vitamin B12 biosynthetic process; SY Vitamin B12 formation; Vitamin B12 synthesis. GO GO:0009236; cobalamin biosynthetic process HI Biological process: Cobalamin biosynthesis. CA Biological process. // ID Cobalt. AC KW-0170 DE Protein which binds at least one cobalt atom, or protein whose DE function is cobalt-dependent. Cobalt is a metallic element, chemical DE symbol Co. SY Co; Cobalt ion; Co ion; Cobalt cation; Co cation. GO GO:0050897; cobalt ion binding HI Ligand: Cobalt. WW http://www.webelements.com/webelements/elements/text/Co/ CA Ligand. // ID Cobalt transport. AC KW-0171 DE Protein involved in the transport of the trace element cobalt, which DE is a component of vitamin B12. SY Co cation transport; Co ion transport; Co transport; SY Cobalt cation transport; Cobalt ion transport. GO GO:0015087; cobalt ion transmembrane transporter activity GO GO:0006824; cobalt ion transport HI Biological process: Transport; Ion transport; Cobalt transport. HI Ligand: Cobalt; Cobalt transport. CA Biological process. // ID Cockayne syndrome. AC KW-0172 DE Protein which, if defective, causes Cockayne's syndrome (CS), an DE autosomal recessive disease characterized by UV-sensitive skin DE (without pigmentation abnormalities), neurological dysfunction due to DE demyelination of neurons and calcification of basal ganglia DE (psychomotor retardation, deafness, optic atrophy, retinal DE pigmentation and hyperreflexes) and dysmorphic dwarfism (immature DE sexual development and microcephaly). SY Cockayne's syndrome; CS. HI Disease: Cockayne syndrome. CA Disease. // IC Coding sequence diversity. AC KW-9997 DE Keywords assigned to proteins because their sequences can differ, due DE to differences in the coding sequences such as polymorphisms, RNA- DE editing, alternative splicing. // ID Coenzyme A biosynthesis. AC KW-0173 DE Protein involved in the biosynthetic pathway leading from pantothenate DE to coenzyme A (CoA). CoA has two halves in phosphodiester linkage: a DE 3',5'-ADP residue, and 4-phosphopantetheine. The phosphopantetheine DE moiety is itself composed of three structural entities: a branched DE chain dihydroxy acid in amide linkage to a beta-alanyl residue, which DE is in turn linked to a cysteamide containing the reactive thiol. DE Coenzyme A functions as a carrier of acetyl and acyl groups and is DE essential for numerous biosynthetic, energy-yielding, and degradative DE metabolic pathways. Acetyl-CoA is the common cellular currency for DE acetyl transfers. SY Coenzyme A anabolism; Coenzyme A biosynthetic process; SY Coenzyme A formation; Coenzyme A synthesis; SY CoA biosynthesis; CoA anabolism; CoA biosynthetic process; SY CoA formation; CoA synthesis; CoASH biosynthesis; CoASH anabolism; SY CoASH biosynthetic process; CoASH formation; CoASH synthesis. GO GO:0015937; coenzyme A biosynthetic process HI Biological process: Coenzyme A biosynthesis. CA Biological process. // ID Coenzyme M biosynthesis. AC KW-0174 DE Protein involved in the biosynthesis of coenzyme M. Coenzyme M (2- DE mercaptoethanesulfonic acid) is the smallest known organic cofactor. DE CoM serves as a methyl group carrier in key reactions within the DE pathway of methane formation from C1 precursors. In the alkene DE metabolism pathway, it is involved in aliphatic epoxyde carboxylation. SY Coenzyme M anabolism; Coenzyme M biosynthetic process; SY Coenzyme M formation; Coenzyme M synthesis; CoM biosynthesis; SY CoM anabolism; CoM biosynthetic process; CoM formation; CoM synthesis; SY 2-mercaptoethanesulfonic acid biosynthesis; SY 2-mercaptoethanesulfonic acid anabolism; SY 2-mercaptoethanesulfonic acid biosynthetic process; SY 2-mercaptoethanesulfonic acid formation; SY 2-mercaptoethanesulfonic acid synthesis. GO GO:0019295; coenzyme M biosynthetic process HI Biological process: Coenzyme M biosynthesis. CA Biological process. // ID Coiled coil. AC KW-0175 DE Protein which contains at least one coiled coil domain, a type of DE secondary structure composed of two or more alpha helices which DE entwine to form a cable structure. In proteins, the helical cables DE serve a mechanical role in forming stiff bundles of fibres. SY Heptad repeat pattern. HI Domain: Coiled coil. CA Domain. // ID Collagen. AC KW-0176 DE Protein which contains one or more collagen-like domain. Collagen is a DE fibrous protein found in vertebrates, the major element of skin, bone, DE tendon, cartilage, blood vessels and teeth. It forms insoluble fibres DE of high tensile strength and which contains the unusual amino acids DE hyroxyproline and hydroxylysine. It is rich in glycine but lacks DE cysteine and tryptophan, and has an unusually regular amino-acid DE domain. HI Domain: Collagen. CA Domain. // ID Collagen degradation. AC KW-0177 DE Protein involved in the degradation of collagen, a family of fibrous DE proteins found in skin, bones, teeth, cartilage and other tissues of DE vertebrates. SY Collagen breakdown; Collagen catabolic process; Collagen catabolism. GO GO:0030574; collagen catabolic process HI Biological process: Collagen degradation. CA Biological process. // ID Competence. AC KW-0178 DE Protein involved in competence, the state in which a cell or organism DE is able to take up DNA and become genetically transformed. GO GO:0030420; establishment of competence for transformation HI Biological process: Competence. CA Biological process. // ID Complement alternate pathway. AC KW-0179 DE Protein involved in the complement alternate pathway which activates DE the proteins of the complement system. This pathway can be activated DE by IgA immune complexes, but also by bacterial endotoxins, DE polysaccharides and cell walls, without participation of an antigen- DE antibody reaction. SY Alternate complement pathway; Properdin system; SY Complement activation alternative pathway. GO GO:0006957; complement activation, alternative pathway HI Biological process: Immune response; Innate immunity; Complement alternate pathway. CA Biological process. // ID Complement pathway. AC KW-0180 DE Pathway which activates the proteins of the complement system, a group DE of blood proteins of the globulin class involved in the lysis of DE foreign cells after they have been coated with antibody, and which DE also promote the removal of antibody-coated foreign particles by DE phagocytic cells. The pathway proceeds by a cascade reaction of DE successive binding and proteolytic cleavage of complement components. DE This pathway can be activated by either IgG or IgM binding to an DE antigen. SY Classical complement pathway; Complement activation classical pathway. GO GO:0006958; complement activation, classical pathway HI Biological process: Immune response; Innate immunity; Complement pathway. CA Biological process. // ID Complete proteome. AC KW-0181 DE Protein which is thought to be expressed by an organism whose genome DE has been completely sequenced. A complete set of proteins from a DE specified genome can therefore be obtained using this keyword across DE the Swiss-Prot and TrEMBL sections of the UniProt Knowledgebase. HI Technical term: Complete proteome. CA Technical term. // ID Cone-rod dystrophy. AC KW-0182 DE Protein which, if defective, causes cone-rod dystrophy, a disease DE where dystrophy of cone-rod cells is characterized by the initial DE degeneration of cone photoreceptor cells, thus causing early loss of DE visual acuity and color vision, followed by the degeneration of rod DE photoreceptor cells and leading to progressive night blindness and DE peripheral visual field loss. GO GO:0007601; visual perception HI Disease: Cone-rod dystrophy. HI Biological process: Sensory transduction; Vision; Cone-rod dystrophy. CA Disease. // ID Conidiation. AC KW-0183 DE Protein involved in conidiation, the production of conidia which are DE asexual fungal spores. SY Conidium formation; Conidium biosynthesis; Conidia biosynthesis; SY Conidia formation. GO GO:0048315; conidium formation HI Biological process: Sporulation; Conidiation. CA Biological process. // ID Congenital adrenal hyperplasia. AC KW-0954 DE Protein which, if defective, causes congenital adrenal hyperplasia, a DE group of inherited disorders of cortisol biosynthesis. Defective DE cortisol biosynthesis results in compensatory hypersecretion of DE corticotropin with subsequent adrenal hyperplasia and excessive DE androgen production. Various clinical types are recognized: "salt DE wasting form" is the most severe type, "simple virilizing form" with DE normal aldosterone biosynthesis, "non-classic form" or late onset, and DE "cryptic form" or asymptomatic. SY CAH. HI Disease: Congenital adrenal hyperplasia. CA Disease. // ID Congenital disorder of glycosylation. AC KW-0900 DE Protein which, if defective, causes a congenital disorder of DE glycosilation. In the endoplasmic reticulum (ER) of eukaryotes, N- DE linked glycans are first assembled on the lipid carrier dolichyl DE pyrophosphate. The GlcNAc(2)Man(9)Glc(3) oligosaccharide is DE transferred to selected asparagine residues of nascent polypeptides. DE Defects along the biosynthetic pathway of N-glycans are associated DE with severe multisystemic syndromes called congenital disorders of DE glycosylation (CDG). The characteristic biochemical feature of CDG is DE defective glycosylation of glycoproteins due to mutations in genes DE required for the biosynthesis of N-linked oligosaccharides. Defects of DE the assembly of dolichyl-linked oligosaccharides or their transfer on DE to nascent glycoproteins form type I forms of CDG, whereas CDG type II DE comprises all defects of the trimming and elongation of N-linked DE oligosaccharides. HI Disease: Congenital disorder of glycosylation. CA Disease. // ID Congenital erythrocytosis. AC KW-0985 DE Protein which, if defective, causes congenital absolute DE erythrocytosis, a disorder characterized by expansion of the DE erythrocyte compartment in the peripheral blood. Total red cell mass DE is increased in the absence of a reduction of plasma volume. DE Erythrocytoses are usually divided into primary and secondary forms. DE Primary erythrocytoses are due to defects in the erythroid progenitors DE and are characterized by low erythropoietin levels. Secondary DE erythrocytoses can be due to defects in hypoxia sensing, or to DE conditions that cause low tissue oxygen tension with consequent DE increase in erythropoietin secretion. SY Congenital polycythemia. HI Disease: Congenital erythrocytosis. CA Disease. // ID Congenital hypothyroidism. AC KW-0984 DE Protein which, if defective, causes congenital hypothyroidism, a DE condition due to thyroid hormones deficiency, presenting at birth. DE Congenital hypothyroidism occurs when the thyroid gland fails to DE develop or function properly. In most cases, the thyroid gland is DE absent, abnormally located, or severely reduced in size. In the DE remaining cases, a normal-sized or enlarged thyroid gland is present, DE but production of thyroid hormones is decreased or absent. If DE untreated, congenital hypothyroidism can lead to mental retardation DE and growth failure. HI Disease: Congenital hypothyroidism. CA Disease. // ID Congenital muscular dystrophy. AC KW-0912 DE The congenital muscular dystrophies (CMD) are a heterogeneous group DE of autosomal recessive disorders presenting in infancy with muscle DE weakness, contractures, and dystrophic changes on skeletal muscle DE biopsy. Structural brain defects, with or without mental retardation, DE are additional features of several CMD syndromes. HI Disease: Congenital muscular dystrophy. CA Disease. // ID Congenital myasthenic syndrome. AC KW-1004 DE Protein which, if defective, causes congenital myasthenic syndrome. DE Congenital myasthenic syndromes constitute a group of inherited diseases DE characterized by a congenital defect in neuromuscular transmission at DE the neuromuscular junction, including pre-synaptic, synaptic, and DE post-synaptic disorders that are not of autoimmune origin. DE Congenital myasthenic syndromes are characterized by muscle weakness DE affecting the axial and limb muscles (with hypotonia in early-onset DE forms), the ocular muscles (leading to ptosis and ophthalmoplegia), DE and the facial and bulbar musculature (affecting sucking and DE swallowing, and leading to dysphonia). The symptoms fluctuate and DE worsen with physical effort. SY CMS. HI Disease: Congenital myasthenic syndrome. CA Disease. // ID Conjugation. AC KW-0184 DE Protein involved in the temporary fusion of two gametes or two cells DE leading to the transfer of genetic material. This process is seen in DE bacteria, ciliate protozoa and certain fungi. GO GO:0000746; conjugation HI Biological process: Conjugation. CA Biological process. // ID Copper. AC KW-0186 DE Protein which binds at least one copper atom, or protein whose DE function is copper-dependent. Copper is a trace metallic element, DE chemical symbol Cu. SY Copper ion; Copper cation; Cu; Cu ion; Cu cation. GO GO:0005507; copper ion binding HI Ligand: Copper. WW http://www.webelements.com/webelements/elements/text/Cu/ CA Ligand. // ID Copper transport. AC KW-0187 DE Protein involved in the transport of ions of the trace element copper. SY Cu transport; Copper ion transport; Copper cation transport. GO GO:0005375; copper ion transmembrane transporter activity GO GO:0006825; copper ion transport HI Biological process: Transport; Ion transport; Copper transport. HI Ligand: Copper; Copper transport. CA Biological process. // ID Copulatory plug. AC KW-0188 DE Protein involded in the formation of the copulatory plug, a plug DE composed of a number of proteins which are secreted by the seminal DE vesicle under the influence of testosterone. Found in rodents. GO GO:0007620; copulation HI Cellular component: Copulatory plug. CA Cellular component. // ID Core protein. AC KW-0189 DE Viral structural protein that forms a shell that contains the genomic DE nucleic acid. GO GO:0019013; viral nucleocapsid HI Cellular component: Virion; Core protein. CA Cellular component. // ID Covalent protein-DNA linkage. AC KW-0190 DE Protein covalently attached to a DNA molecule. For example some DE viruses contains proteins that are attached to the end of a viral DE replicating DNA and which are necessary for DNA replication. SY DNA-protein covalent cross-linking. GO GO:0018142; DNA-protein covalent cross-linking HI PTM: Covalent protein-DNA linkage. CA PTM. // ID Covalent protein-RNA linkage. AC KW-0191 DE Protein covalently attached to a RNA molecule. For example some DE viruses contains proteins that are attached to the end of a viral DE replicating RNA and which are necessary for RNA replication. SY RNA-protein covalent cross-linking. GO GO:0018144; RNA-protein covalent cross-linking HI PTM: Covalent protein-RNA linkage. CA PTM. // ID Craniosynostosis. AC KW-0989 DE Protein which, if defective, causes craniosynostosis, the premature DE closure of one or more cranial sutures which results in an abnormal DE head shape. Different types of craniosynostosis are known. All are DE characterized by skull deformities, with face and often limb DE involvement in the syndromic forms. SY Craniostosis. HI Disease: Craniosynostosis. CA Disease. // ID Crown gall tumor. AC KW-0192 DE Protein involved in crown gall tumor formation, a plant tumor caused DE by the bacterium Agrobacterium tumefaciens. HI Disease: Crown gall tumor. CA Disease. // ID CTQ. AC KW-0885 DE Protein which contains at least one cysteine tryptophylquinone (CTQ) DE cross-link modification. CTQ is formed by oxidation of the indole ring DE of a tryptophan to form tryptophylquinone followed by covalent cross- DE linking with a cysteine residue. In the quinohemoprotein amine DE dehydrogenase, CTQ mediates during the catalytic cycle electron DE transfer from the substrate to either a copper protein, azurin, or DE cytochrome c-550. SY Cysteine tryptophylquinone. HI PTM: CTQ. CA PTM. // ID Cuticle. AC KW-0193 DE Protein which is a component of the cuticle, the outer protective DE layer produced by epidermal cells that covers the body of many DE invertebrates. GO GO:0042302; structural constituent of cuticle HI Cellular component: Cuticle. CA Cellular component. // ID Cyanelle. AC KW-0194 DE Protein encoded by the cyanelle genome or protein located in the DE cyanelle. Cyanelles are the plastids of glaucocystophyte algae. They DE are surrounded by a double membrane and, in between, a peptidoglycan DE wall. The cyanelle genome is of chloroplast size and contains genes DE for tRNAs, rRNAs and approx. 150 proteins, which is more than found in DE higher plant chloroplast genomes (this feature is also shared by other DE primitive plastids). Thylakoid membrane architecture and the presence DE of carboxysomes are cyanobacteria-like. Historically, the term DE cyanelle is derived from a classification as endosymbiotic DE cyanobacteria, and thus is not fully correct. SY Muroplast; Cyanoplast. GO GO:0009842; cyanelle HI Cellular component: Plastid; Cyanelle. CA Cellular component. // ID Cyclin. AC KW-0195 DE Protein that belongs to the cyclin family or that contains a cyclin DE box-like domain. Cyclins are regulatory subunits of the cyclin- DE dependent protein kinases. They form kinase holoenzymes, with distinct DE biochemical characteristics and nonredundant biological functions, DE which mediate phosphorylation of cellular proteins, including key cell DE cycle regulatory molecules. In this way, the kinase holoenzymes DE promote the transit of cells through the division cycle. Cyclins DE accumulate during interphase of eukaryotic cell cycle and are DE destroyed at the end of mitosis. HI Molecular function: Cyclin. CA Molecular function. // ID Cycloheximide resistance. AC KW-0196 DE Protein that confers, on an organism, the ability to withstand DE cycloheximide, an antibiotic produced by Streptomyces griseus, which DE inhibits eukaryotic elongation during protein synthesis. The DE resistance is often due to mutations that prevent antibiotic binding DE to the protein. SY Resistance to cycloheximide. GO GO:0046898; response to cycloheximide HI Biological process: Antibiotic resistance; Cycloheximide resistance. CA Biological process. // ID Cyclosporin. AC KW-0197 DE Protein binding cyclosporin or protein whose function is inhibited by DE cyclosporin, e.g. cyclophilins. Cyclosporins are peptides obtained DE from certain hyphomycetes which have potent immuno-suppressant DE activity on humoral and cellular systems. Cyclosporin is used in DE transplant surgery to suppress the immune response. SY Cyclosporin A. GO GO:0042277; peptide binding HI Ligand: Cyclosporin. CA Ligand. // ID Cysteine biosynthesis. AC KW-0198 DE Protein involved in the synthesis of cysteine, the amino acid with the DE highly reactive sulfhydryl group (-SH). It is derived from the amino DE acids methionine and serine. Cysteine plays a special role in shaping DE some proteins by forming disulfide bonds. In enzymes the unique DE reactivity of this group is frequently exploited at the catalytic DE site. SY Cysteine anabolism; Cysteine biosynthetic process; SY Cysteine formation; Cysteine synthesis. GO GO:0019344; cysteine biosynthetic process HI Biological process: Amino-acid biosynthesis; Cysteine biosynthesis. CA Biological process. // ID Cystinuria. AC KW-0199 DE Protein which, if defective, causes cystinuria (CSNU), an autosomal DE recessive condition of persistent excessive urinary excretion of DE cystine and three other dibasic amino acids: lysine, ornithine, and DE arginine. CSNU arises from impaired reabsorption of these amino acids DE through the epithelial cells of the renal tubule and gastrointestinal DE tract. It is characterized by cystine stones in the kidney, ureter and DE bladder. Three clinical types of cystinuria have been described: DE cystinuria type-I (CSNU1), type-II (CSNU2) and type-III (CSNU3). SY CSNU. HI Disease: Cystinuria. CA Disease. // ID Cytadherence. AC KW-0200 DE Protein involved in cytadherence, the attachment of mycoplasma to the DE epithelium. GO GO:0020035; cytoadherence to microvasculature, mediated by parasite protein HI Biological process: Cytadherence. CA Biological process. // ID Cytochrome c-type biogenesis. AC KW-0201 DE Protein involved in the biogenesis of c-type cytochromes. Cytochromes DE c are electron-transfer proteins having one or several heme c groups, DE bound to the protein by one or, more commonly two, thioether bonds DE involving sulphydryl groups of cysteine residues. SY Cytochrome c-type formation; Cytochrome c-type synthesis. GO GO:0017004; cytochrome complex assembly HI Biological process: Cytochrome c-type biogenesis. CA Biological process. // ID Cytokine. AC KW-0202 DE Small secreted proteins from higher eukaryotes which affect the DE growth, division and functions of other cells, e.g. interleukins, DE lymphokines, TNF and interferons. Generally, growth factors are not DE classified as cytokines, though TGF is an exception. Chemokines are a DE subset of cytokines. They differ from classical hormones in that they DE are produced by a number of tissues or cell types rather than by DE specialized glands. They generally act locally in a paracrine or DE autocrine rather than endocrine manner. GO GO:0005125; cytokine activity GO GO:0005615; extracellular space HI Molecular function: Cytokine. CA Molecular function. // ID Cytokinin biosynthesis. AC KW-0203 DE Protein involved in the synthesis of cytokinins, a class of plant DE hormones which promote cell division (e.g. kinetin, zeatin, benzyl DE adenine). They are also involved in cell growth, cell differentiation DE and in other physiological processes. SY Cytokinin anabolism; Cytokinin biosynthetic process; SY Cytokinin formation; Cytokinin synthesis. GO GO:0009691; cytokinin biosynthetic process HI Biological process: Cytokinin biosynthesis. CA Biological process. // ID Cytokinin signaling pathway. AC KW-0932 DE Protein involved in the cytokinin signaling pathway (i.e. transport or DE signal transduction). Cytokinins (i.e. kinetin and zeatin) are defined DE more by their biological activity (e.g. inducing cell division in DE tissue culture) rather than by structure. These phytohormones are DE synthesized in the root apical meristem and transported through the DE plant in the xylem sap. Cytokinins are involved in several DE physiological processes such as promoting cell division and DE chloroplast maturation, regulating cell growth and differentiation, DE and monitoring nutrient uptake and senescence. Together with auxin, DE they also regulate the cell cycle and tissue morphogenesis. SY Cytokinin mediated signaling. GO GO:0009736; cytokinin mediated signaling HI Biological process: Cytokinin signaling pathway. CA Biological process. // ID Cytolysis. AC KW-0204 DE Protein involved in the rupture of cell membranes and loss of DE cytoplasm, e.g. exotoxin, cytolysin. SY Cell lysis. GO GO:0019835; cytolysis HI Biological process: Cytolysis. CA Biological process. // ID Cytoplasm. AC KW-0963 DE Protein found in the cytoplasm, the content of a cell within the DE plasma membrane and, in eukaryotics cells, surrounding the nucleus. DE This three-dimensional, jelly-like lattice interconnects and supports DE the other solid structures. The cytosol (the soluble portion of the DE cytoplasm outside the organelles) is mostly composed of water and many DE low molecular weight compounds. In eukaryotes, the cytoplasm also DE contains a network of cytoplasmic filaments (cytoskeleton). GO GO:0005737; cytoplasm HI Cellular component: Cytoplasm. CA Cellular component. // ID Cytoplasmic vesicle. AC KW-0968 DE Protein found in or associated with cytoplasmic vesicles, which DE mediate vesicular transport among the organelles of secretory and DE endocytic systems. These transport vesicles are classified by the DE identity of the protein coat used in their formation and also by the DE cargo they contain, e.g. clathrin-, COPI-, and COPII-coated vesicles, DE synaptic vesicles, secretory vesicles, phagosomes, etc. GO GO:0031410; cytoplasmic vesicle HI Cellular component: Cytoplasmic vesicle. CA Cellular component. // ID Cytosine metabolism. AC KW-0205 DE Protein involved in the biochemical reactions with the pyrimidine base DE cytosine. SY Cytosine metabolic process. GO GO:0019858; cytosine metabolic process HI Biological process: Cytosine metabolism. CA Biological process. // ID Cytoskeleton. AC KW-0206 DE Protein which is a component or which is associated with the DE cytoskeleton, a dynamic three-dimensional structure that fills the DE cytoplasm of eukaryotic cells. The cytoskeleton is both a muscle and a DE skeleton, and is responsible for cel