Reviewed, UniProtKB/Swiss-Prot P55970 (GRPE_HELPY)

Names and origin

Protein names

Recommended name:
    Protein grpE
Alternative name(s):
    HSP-70 cofactor

Gene names

Name:	grpE
Ordered Locus Names:	HP_0110

Organism

Helicobacter pylori (Campylobacter pylori) [Complete proteome] [HAMAP]

Taxonomic identifier

210 [NCBI]

Taxonomic lineage

Bacteria › Proteobacteria › Epsilonproteobacteria › Campylobacterales › Helicobacteraceae › Helicobacter

Protein attributes

Sequence length	189 AA.
Sequence status	Complete.
Sequence processing	The displayed sequence is not processed.
Protein existence	Inferred from homology.

General annotation (Comments)

Function	Participates actively in the response to hyperosmotic and heat shock by preventing the aggregation of stress-denatured proteins, in association with dnaK and grpE. It is the nucleotide exchange factor for dnaK and may function as a thermosensor. Unfolded proteins bind initially to dnaJ; upon interaction with the dnaJ-bound protein, dnaK hydrolyzes its bound ATP, resulting in the formation of a stable complex. GrpE releases ADP from dnaK; ATP binding to dnaK triggers the release of the substrate protein, thus completing the reaction cycle. Several rounds of ATP-dependent interactions between dnaJ, dnaK and grpE are required for fully efficient folding By similarity.
Subunit structure	Homodimer By similarity.
Subcellular location	CytoplasmProbable.
Sequence similarities	Belongs to the grpE family.

Ontologies

Keywords
Biological process	Stress response
Cellular component	Cytoplasm
Molecular function	Chaperone
Technical term	Complete proteome
Gene Ontology (GO)
Cellular component	cytoplasm Inferred from electronic annotation. Source: HAMAP
Molecular function	chaperone activator activity Inferred from electronic annotation. Source: HAMAP
Complete GO annotation...

Sequence annotation (Features)

	Feature key	Position(s)	Length	Description	Graphical view
Molecule processing
	Chain	1 – 189	189	Protein grpE

Sequences

	Sequence		Length	Mass (Da)
	P55970-1 [UniParc]. Last modified November 1, 1997. Version 1. Checksum: 62C0991B684F0C2D	FASTA	189	22,040
	10 20 30 40 50 60 MKDEHNQEHD HLSQKEPEFC EKACKEQQYE EKQEAGEKEG EIKEDFELKY KEMHEKYLRV 70 80 90 100 110 120 HADFENVKKR LERDKSMALE YAYEKIALDL LPVIDALLGA HKSAAEEDKE SALTKGLELT 130 140 150 160 170 180 MEKLHEVLAR HGIEGIECLE EFDPHFHNAI MQVKSEEKEN GKIVQVLQQG YKYKGRVLRP AMVSIAKND

References

[1]

"The complete genome sequence of the gastric pathogen Helicobacter pylori." Tomb J.-F., White O., Kerlavage A.R., Clayton R.A., Sutton G.G., Fleischmann R.D., Ketchum K.A., Klenk H.-P., Gill S.R., Dougherty B.A., Nelson K.E., Quackenbush J., Zhou L., Kirkness E.F., Peterson S.N., Loftus B.J., Richardson D.L., Dodson R.J. , Khalak H.G., Glodek A., McKenney K., FitzGerald L.M., Lee N., Adams M.D., Hickey E.K., Berg D.E., Gocayne J.D., Utterback T.R., Peterson J.D., Kelley J.M., Cotton M.D., Weidman J.F., Fujii C., Bowman C., Watthey L., Wallin E., Hayes W.S., Borodovsky M., Karp P.D., Smith H.O., Fraser C.M., Venter J.C. Nature 388:539-547(1997) [PubMed: 9252185] [Abstract] Cited for: NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA]. Strain: ATCC 700392 / 26695.

Cross-references

Sequence databases
EMBLGenBankDDBJ	AE000511 Genomic DNA. Translation: AAD07179.1.
PIR	F64533.
RefSeq	NP_206910.1.
3D structure databases
HSSP	HSSP built from PDB template 1DKG based on UniProtKB P09372.
ModBase	Search...
Genome annotation databases
GeneID	899121.
GenomeReviews	Gene locus HP_0110 in contig AE000511_GR.
KEGG	hpy:HP0110.
NMPDR	fig|85962.1.peg.108.
TIGR	HP_0110.
Phylogenomic databases
HOGENOM	P55970.
Family and domain databases
HAMAP	MF_01151. [Tree]
InterPro	IPR000740. GrpE. IPR013805. GrpE_coiled_coil. IPR009012. GrpE_head. [Graphical view]
Gene3D	G3DSA:3.90.20.20. GrpE_coiled_coil. 1 hit. G3DSA:2.30.22.10. GrpE_head. 1 hit.
PANTHER	PTHR21237. GrpE. 1 hit.
Pfam	PF01025. GrpE. 1 hit. [Graphical view]
PRINTS	PR00773. GRPEPROTEIN.
PROSITE	PS01071. GRPE. 1 hit. [Graphical view]
ProDom	P55970. [Graphical view] [Entries sharing at least one domain]
BLOCKS	Search...
Other Resources
ProtoNet	Search...

Entry information

Entry name

GRPE_HELPY

Accession

Primary (citable) accession number: P55970

Entry history

Integrated into UniProtKB/Swiss-Prot:	November 1, 1997
Last sequence update:	November 1, 1997
Last modified:	July 22, 2008
This is version 47 of the entry and version 1 of the sequence. [Complete history]

Entry status

Reviewed (UniProtKB/Swiss-Prot)

Annotation project

HAMAP (High-quality Automated and Manual Annotation of microbial Proteomes)