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Reviewed, UniProtKB/Swiss-Prot O14578 (CTRO_HUMAN)

Last modified July 22, 2008. Version 70. Feed History...

Clusters with 100%, 90%, 50% identity | Documents (7) | Third-party data | Customize display text xml rdf/xml gff fasta
Names and origin · Protein attributes · General annotation (Comments) · Ontologies · Alternative products · Sequence annotation (Features) · Sequences · References · Cross-references · Entry information · Relevant documents

Names and origin

Protein namesRecommended name:
    Citron Rho-interacting kinase
      Short name=CRIK
    EC=2.7.11.1
Alternative name(s):
    Rho-interacting, serine/threonine-protein kinase 21
Gene names
Name: CIT
Synonyms: KIAA0949, STK21
OrganismHomo sapiens (Human)
Taxonomic identifier9606 [NCBI]
Taxonomic lineageEukaryotaMetazoaChordataCraniataVertebrataEuteleostomiMammaliaEutheriaEuarchontogliresPrimatesHaplorrhiniCatarrhiniHominidaeHomo

Protein attributes

Sequence length2027 AA.
Sequence statusComplete.
Sequence processingThe displayed sequence is not processed.
Protein existenceEvidence at protein level.

General annotation (Comments)

Function

Required for KIF14 localization to the central spindle and midbody. May play a role in cytokinesis. Putative RHO/RAC effector that binds to the GTP-bound forms of RHO and RAC1. It probably binds p21 with a tighter specificity in vivo. Dual specificity protein kinase activity catalyzing autophosphorylation and phosphorylation of exogenous substrates on both serine/threonine and tyrosine residues. Plays an important role in the regulation of cytokinesis and the development of the central nervous system By similarity.

Catalytic activity

ATP + a protein = ADP + a phosphoprotein.

Subunit structure

Directly interacts with KIF14 depending on the activation state (stronger interaction with the kinase-dead form). Homodimer By similarity.

Subcellular location

CytoplasmBy similarity.

Sequence similarities

Belongs to the protein kinase superfamily. AGC Ser/Thr protein kinase family.

Contains 1 AGC-kinase C-terminal domain.

Contains 1 CNH domain.

Contains 1 PH domain.

Contains 1 phorbol-ester/DAG-type zinc finger.

Contains 1 protein kinase domain.

Alternative products

This entry describes 3 isoforms produced by alternative splicing. [Align] [Select]
Isoform 1 (identifier: O14578-1)

Also known as: Long;

This isoform has been chosen as the 'canonical' sequence. All positional information in this entry refers to it. This is also the sequence that appears in the downloadable versions of the entry.
Isoform 2 (identifier: O14578-2)

Also known as: Short; CRIK-SK;

The sequence of this isoform differs from the canonical sequence as follows:
     481-482: EV → GG
     483-2027: Missing.
Isoform 3 (identifier: O14578-3)

The sequence of this isoform differs from the canonical sequence as follows:
     1-467: Missing.
     1239-1253: Missing.
     1919-1919: Missing.
Notes: No experimental confirmation available.

Sequence annotation (Features)

Feature keyPosition(s)LengthDescriptionGraphical view

Molecule processing

Chain1 – 20272027Citron Rho-interacting kinase

Regions

Domain97 – 360264Protein kinase
Domain361 – 43171AGC-kinase C-terminal
Domain1443 – 1563121PH
Domain1593 – 1883291CNH
Nucleotide binding103 – 1119ATP By similarity
Zinc finger1362 – 141150Phorbol-ester/DAG-type
Region1091 – 1302212Interaction with Rho/Rac
Coiled coil453 – 1297845 Potential
Motif1953 – 19586SH3-binding Potential

Sites

Active site2211Proton acceptor By similarity
Binding site1261ATP By similarity

Amino acid modifications

Modified residue4401Phosphoserine
Modified residue4801Phosphoserine By similarity
Modified residue11961Phosphotyrosine By similarity
Modified residue14781Phosphotyrosine By similarity
Modified residue15821Phosphoserine By similarity
Modified residue19711Phosphoserine
Modified residue19931Phosphoserine

Natural variations

Alternative sequence1 – 467467Missing in isoform 3.
Alternative sequence481 – 4822EV → GG in isoform 2.
Alternative sequence483 – 20271545Missing in isoform 2.
Alternative sequence1239 – 125315Missing in isoform 3.
Alternative sequence19191Missing in isoform 3.
Natural variant71G → E
Natural variant91R → Q
Natural variant1831L → F

Experimental info

Sequence conflict121L → S in AAP43922. Ref.2
Sequence conflict561F → L in AAP43922. Ref.2
Sequence conflict2181V → L in AAP43922. Ref.2

Sequences

Sequence LengthMass (Da)Tools
Isoform 1 (Long) [UniParc].

Last modified January 4, 2005. Version 2.
Checksum: 6B1D8C3F661F357B

FASTA2,027231,431
        10         20         30         40         50         60 
MLKFKYGARN PLDAGAAEPI ASRASRLNLF FQGKPPFMTQ QQMSPLSREG ILDALFVLFE 

        70         80         90        100        110        120 
ECSQPALMKI KHVSNFVRKY SDTIAELQEL QPSAKDFEVR SLVGCGHFAE VQVVREKATG 

       130        140        150        160        170        180 
DIYAMKVMKK KALLAQEQVS FFEEERNILS RSTSPWIPQL QYAFQDKNHL YLVMEYQPGG 

       190        200        210        220        230        240 
DLLSLLNRYE DQLDENLIQF YLAELILAVH SVHLMGYVHR DIKPENILVD RTGHIKLVDF 

       250        260        270        280        290        300 
GSAAKMNSNK MVNAKLPIGT PDYMAPEVLT VMNGDGKGTY GLDCDWWSVG VIAYEMIYGR 

       310        320        330        340        350        360 
SPFAEGTSAR TFNNIMNFQR FLKFPDDPKV SSDFLDLIQS LLCGQKERLK FEGLCCHPFF 

       370        380        390        400        410        420 
SKIDWNNIRN SPPPFVPTLK SDDDTSNFDE PEKNSWVSSS PCQLSPSGFS GEELPFVGFS 

       430        440        450        460        470        480 
YSKALGILGR SESVVSGLDS PAKTSSMEKK LLIKSKELQD SQDKCHKMEQ EMTRLHRRVS 

       490        500        510        520        530        540 
EVEAVLSQKE VELKASETQR SLLEQDLATY ITECSSLKRS LEQARMEVSQ EDDKALQLLH 

       550        560        570        580        590        600 
DIREQSRKLQ EIKEQEYQAQ VEEMRLMMNQ LEEDLVSARR RSDLYESELR ESRLAAEEFK 

       610        620        630        640        650        660 
RKATECQHKL LKAKDQGKPE VGEYAKLEKI NAEQQLKIQE LQEKLEKAVK ASTEATELLQ 

       670        680        690        700        710        720 
NIRQAKERAE RELEKLQNRE DSSEGIRKKL VEAEELEEKH REAQVSAQHL EVHLKQKEQH 

       730        740        750        760        770        780 
YEEKIKVLDN QIKKDLADKE TLENMMQRHE EEAHEKGKIL SEQKAMINAM DSKIRSLEQR 

       790        800        810        820        830        840 
IVELSEANKL AANSSLFTQR NMKAQEEMIS ELRQQKFYLE TQAGKLEAQN RKLEEQLEKI 

       850        860        870        880        890        900 
SHQDHSDKNR LLELETRLRE VSLEHEEQKL ELKRQLTELQ LSLQERESQL TALQAARAAL 

       910        920        930        940        950        960 
ESQLRQAKTE LEETTAEAEE EIQALTAHRD EIQRKFDALR NSCTVITDLE EQLNQLTEDN 

       970        980        990       1000       1010       1020 
AELNNQNFYL SKQLDEASGA NDEIVQLRSE VDHLRREITE REMQLTSQKQ TMEALKTTCT 

      1030       1040       1050       1060       1070       1080 
MLEEQVMDLE ALNDELLEKE RQWEAWRSVL GDEKSQFECR VRELQRMLDT EKQSRARADQ 

      1090       1100       1110       1120       1130       1140 
RITESRQVVE LAVKEHKAEI LALQQALKEQ KLKAESLSDK LNDLEKKHAM LEMNARSLQQ 

      1150       1160       1170       1180       1190       1200 
KLETERELKQ RLLEEQAKLQ QQMDLQKNHI FRLTQGLQEA LDRADLLKTE RSDLEYQLEN 

      1210       1220       1230       1240       1250       1260 
IQVLYSHEKV KMEGTISQQT KLIDFLQAKM DQPAKKKKGL FSRRKEDPAL PTQVPLQYNE 

      1270       1280       1290       1300       1310       1320 
LKLALEKEKA RCAELEEALQ KTRIELRSAR EEAAHRKATD HPHPSTPATA RQQIAMSAIV 

      1330       1340       1350       1360       1370       1380 
RSPEHQPSAM SLLAPPSSRR KESSTPEEFS RRLKERMHHN IPHRFNVGLN MRATKCAVCL 

      1390       1400       1410       1420       1430       1440 
DTVHFGRQAS KCLECQVMCH PKCSTCLPAT CGLPAEYATH FTEAFCRDKM NSPGLQTKEP 

      1450       1460       1470       1480       1490       1500 
SSSLHLEGWM KVPRNNKRGQ QGWDRKYIVL EGSKVLIYDN EAREAGQRPV EEFELCLPDG 

      1510       1520       1530       1540       1550       1560 
DVSIHGAVGA SELANTAKAD VPYILKMESH PHTTCWPGRT LYLLAPSFPD KQRWVTALES 

      1570       1580       1590       1600       1610       1620 
VVAGGRVSRE KAEADAKLLG NSLLKLEGDD RLDMNCTLPF SDQVVLVGTE EGLYALNVLK 

      1630       1640       1650       1660       1670       1680 
NSLTHVPGIG AVFQIYIIKD LEKLLMIAGE ERALCLVDVK KVKQSLAQSH LPAQPDISPN 

      1690       1700       1710       1720       1730       1740 
IFEAVKGCHL FGAGKIENGL CICAAMPSKV VILRYNENLS KYCIRKEIET SEPCSCIHFT 

      1750       1760       1770       1780       1790       1800 
NYSILIGTNK FYEIDMKQYT LEEFLDKNDH SLAPAVFAAS SNSFPVSIVQ VNSAGQREEY 

      1810       1820       1830       1840       1850       1860 
LLCFHEFGVF VDSYGRRSRT DDLKWSRLPL AFAYREPYLF VTHFNSLEVI EIQARSSAGT 

      1870       1880       1890       1900       1910       1920 
PARAYLDIPN PRYLGPAISS GAIYLASSYQ DKLRVICCKG NLVKESGTEH HRGPSTSRSS 

      1930       1940       1950       1960       1970       1980 
PNKRGPPTYN EHITKRVASS PAPPEGPSHP REPSTPHRYR EGRTELRRDK SPGRPLEREK 

      1990       2000       2010       2020 
SPGRMLSTRR ERSPGRLFED SSRGRLPAGA VRTPLSQVNK VWDQSSV 

« Hide

Isoform 2 (Short) (CRIK-SK) [UniParc].

Checksum: 7F23D62DD30DC0CE
Show »

48254,399
Isoform 3 [UniParc].

Checksum: 309A4BA63CB1419D
Show »

1,544177,035

References

« Hide 'large scale' references
[1]Huang C.Q., Wu S.L., Shan Y.X., Liu S., Xiao P.J.
Submitted (MAR-2003) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 1).
[2]"Cloning and characterizing a novel human CRIK-SK gene."
Mao Y., Xie Y., Wu Q.
Submitted (JAN-2003) to the EMBL/GenBank/DDBJ databases
Cited for: NUCLEOTIDE SEQUENCE [MRNA] (ISOFORM 2).
[3]"Prediction of the coding sequences of unidentified human genes. XIII. The complete sequences of 100 new cDNA clones from brain which code for large proteins in vitro."
Nagase T., Ishikawa K., Suyama M., Kikuno R., Hirosawa M., Miyajima N., Tanaka A., Kotani H., Nomura N., Ohara O.
DNA Res. 6:63-70(1999) [PubMed: 10231032] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE MRNA] (ISOFORM 3).
Tissue: Brain.
[4]Ohara O., Nagase T., Kikuno R.
Submitted (JAN-2005) to the EMBL/GenBank/DDBJ databases
Cited for: SEQUENCE REVISION.
[5]"The finished DNA sequence of human chromosome 12."
Scherer S.E., Muzny D.M., Buhay C.J., Chen R., Cree A., Ding Y., Dugan-Rocha S., Gill R., Gunaratne P., Harris R.A., Hawes A.C., Hernandez J., Hodgson A.V., Hume J., Jackson A., Khan Z.M., Kovar-Smith C., Lewis L.R. expand/collapse author list , Lozado R.J., Metzker M.L., Milosavljevic A., Miner G.R., Montgomery K.T., Morgan M.B., Nazareth L.V., Scott G., Sodergren E., Song X.-Z., Steffen D., Lovering R.C., Wheeler D.A., Worley K.C., Yuan Y., Zhang Z., Adams C.Q., Ansari-Lari M.A., Ayele M., Brown M.J., Chen G., Chen Z., Clerc-Blankenburg K.P., Davis C., Delgado O., Dinh H.H., Draper H., Gonzalez-Garay M.L., Havlak P., Jackson L.R., Jacob L.S., Kelly S.H., Li L., Li Z., Liu J., Liu W., Lu J., Maheshwari M., Nguyen B.-V., Okwuonu G.O., Pasternak S., Perez L.M., Plopper F.J.H., Santibanez J., Shen H., Tabor P.E., Verduzco D., Waldron L., Wang Q., Williams G.A., Zhang J., Zhou J., Allen C.C., Amin A.G., Anyalebechi V., Bailey M., Barbaria J.A., Bimage K.E., Bryant N.P., Burch P.E., Burkett C.E., Burrell K.L., Calderon E., Cardenas V., Carter K., Casias K., Cavazos I., Cavazos S.R., Ceasar H., Chacko J., Chan S.N., Chavez D., Christopoulos C., Chu J., Cockrell R., Cox C.D., Dang M., Dathorne S.R., David R., Davis C.M., Davy-Carroll L., Deshazo D.R., Donlin J.E., D'Souza L., Eaves K.A., Egan A., Emery-Cohen A.J., Escotto M., Flagg N., Forbes L.D., Gabisi A.M., Garza M., Hamilton C., Henderson N., Hernandez O., Hines S., Hogues M.E., Huang M., Idlebird D.G., Johnson R., Jolivet A., Jones S., Kagan R., King L.M., Leal B., Lebow H., Lee S., LeVan J.M., Lewis L.C., London P., Lorensuhewa L.M., Loulseged H., Lovett D.A., Lucier A., Lucier R.L., Ma J., Madu R.C., Mapua P., Martindale A.D., Martinez E., Massey E., Mawhiney S., Meador M.G., Mendez S., Mercado C., Mercado I.C., Merritt C.E., Miner Z.L., Minja E., Mitchell T., Mohabbat F., Mohabbat K., Montgomery B., Moore N., Morris S., Munidasa M., Ngo R.N., Nguyen N.B., Nickerson E., Nwaokelemeh O.O., Nwokenkwo S., Obregon M., Oguh M., Oragunye N., Oviedo R.J., Parish B.J., Parker D.N., Parrish J., Parks K.L., Paul H.A., Payton B.A., Perez A., Perrin W., Pickens A., Primus E.L., Pu L.-L., Puazo M., Quiles M.M., Quiroz J.B., Rabata D., Reeves K., Ruiz S.J., Shao H., Sisson I., Sonaike T., Sorelle R.P., Sutton A.E., Svatek A.F., Svetz L.A., Tamerisa K.S., Taylor T.R., Teague B., Thomas N., Thorn R.D., Trejos Z.Y., Trevino B.K., Ukegbu O.N., Urban J.B., Vasquez L.I., Vera V.A., Villasana D.M., Wang L., Ward-Moore S., Warren J.T., Wei X., White F., Williamson A.L., Wleczyk R., Wooden H.S., Wooden S.H., Yen J., Yoon L., Yoon V., Zorrilla S.E., Nelson D., Kucherlapati R., Weinstock G., Gibbs R.A.
Nature 440:346-351(2006) [PubMed: 16541075] [Abstract]
Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
[6]"KIF14 and citron kinase act together to promote efficient cytokinesis."
Gruneberg U., Neef R., Li X., Chan E.H.Y., Chalamalasetty R.B., Nigg E.A., Barr F.A.
J. Cell Biol. 172:363-372(2006) [PubMed: 16431929] [Abstract]
Cited for: FUNCTION, INTERACTION WITH KIF14.
[7]"Global, in vivo, and site-specific phosphorylation dynamics in signaling networks."
Olsen J.V., Blagoev B., Gnad F., Macek B., Kumar C., Mortensen P., Mann M.
Cell 127:635-648(2006) [PubMed: 17081983] [Abstract]
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-1971 AND SER-1993, MASS SPECTROMETRY.
Tissue: Epithelium.
[8]"Phosphoproteome analysis of the human mitotic spindle."
Nousiainen M., Sillje H.H.W., Sauer G., Nigg E.A., Koerner R.
Proc. Natl. Acad. Sci. U.S.A. 103:5391-5396(2006) [PubMed: 16565220] [Abstract]
Cited for: PHOSPHORYLATION [LARGE SCALE ANALYSIS] AT SER-440, MASS SPECTROMETRY.
Tissue: Epithelium.
[9]"Patterns of somatic mutation in human cancer genomes."
Greenman C., Stephens P., Smith R., Dalgliesh G.L., Hunter C., Bignell G., Davies H., Teague J., Butler A., Stevens C., Edkins S., O'Meara S., Vastrik I., Schmidt E.E., Avis T., Barthorpe S., Bhamra G., Buck G. expand/collapse author list , Choudhury B., Clements J., Cole J., Dicks E., Forbes S., Gray K., Halliday K., Harrison R., Hills K., Hinton J., Jenkinson A., Jones D., Menzies A., Mironenko T., Perry J., Raine K., Richardson D., Shepherd R., Small A., Tofts C., Varian J., Webb T., West S., Widaa S., Yates A., Cahill D.P., Louis D.N., Goldstraw P., Nicholson A.G., Brasseur F., Looijenga L., Weber B.L., Chiew Y.-E., DeFazio A., Greaves M.F., Green A.R., Campbell P., Birney E., Easton D.F., Chenevix-Trench G., Tan M.-H., Khoo S.K., Teh B.T., Yuen S.T., Leung S.Y., Wooster R., Futreal P.A., Stratton M.R.
Nature 446:153-158(2007) [PubMed: 17344846] [Abstract]
Cited for: VARIANTS [LARGE SCALE ANALYSIS] GLU-7; GLN-9 AND PHE-183.
+Additional computationally mapped references.

Cross-references

Sequence databases

AY257469 mRNA. Translation: AAP13528.1.
AY209000 mRNA. Translation: AAP43922.1.
AB023166 mRNA. Translation: BAA76793.2. Different initiation.
AC002563 Genomic DNA. Translation: AAB71327.1.
AC079317 Genomic DNA. No translation available.
AC004813 Genomic DNA. No translation available.
RefSeqNP_009105.1.
UniGeneHs.119594

3D structure databases

HSSPHSSP built from PDB template 1MRV based on UniProtKB P31751.
ModBaseSearch...

PTM databases

PhosphoSiteO14578.

Genome annotation databases

EnsemblENSG00000122966. Homo sapiens. [Contig view]
GeneID11113.
KEGGhsa:11113.

Organism-specific databases

HGNCHGNC:1985. CIT.
MIM605629. gene.
PharmGKBPA26522.
HUGESearch...