UniProt Accession

 IBPA_ECOLI; P0C054; P29209; Q2M7Z9 

Genbank Protein ID

 M94104; L10328; U00096; AP009048 

Genbank Nucleotide ID

 AAA24424.1; AAA62039.1; AAC76710.1; BAE77607.1 

Protein Name

 Small heat shock protein IbpA 

Protein Synonyms/Alias

 16 kDa heat shock protein A 

Gene Name

 ibpA 

Gene Synonyms/Alias

 hslT; htpN; b3687; JW3664 

Created Date

 July 27, 2013 

Organism

 Escherichia coli (strain K12) 

NCBI Taxa ID

 83333 

Lysine Modification

Position	Peptide	Type	References
98	AERNFERKFQLAENI	acetylation	[1]

Reference

 [1] Acetyl-Phosphate Is a Critical Determinant of Lysine Acetylation in E. coli.
 Weinert BT, Iesmantavicius V, Wagner SA, Schölz C, Gummesson B, Beli P, Nyström T, Choudhary C.
 Mol Cell. 2013 Jul 25;51(2):265-72. [PMID: 23830618] 

Functional Description

 Associates with aggregated proteins, together with IbpB, to stabilize and protect them from irreversible denaturation and extensive proteolysis during heat shock and oxidative stress. Aggregated proteins bound to the IbpAB complex are more efficiently refolded and reactivated by the ATP-dependent chaperone systems ClpB and DnaK/DnaJ/GrpE. Its activity is ATP- independent. 

Sequence Annotation

  

Keyword

 Chaperone; Complete proteome; Cytoplasm; Direct protein sequencing; Reference proteome; Stress response. 

Sequence Source

 UniProt (SWISSPROT/TrEMBL); GenBank; EMBL 

Protein Length

 137 AA 

Protein Sequence

Gene Ontology

 GO:0009279; C:cell outer membrane; IDA:EcoCyc.
 GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
 GO:0009408; P:response to heat; IEP:EcoliWiki. 

Interpro

 IPR002068; a-crystallin/Hsp20_dom.
 IPR008978; HSP20-like_chaperone.
 IPR023728; HSP20_IbpA. 

Pfam

 PF00011; HSP20 

SMART

  

PROSITE

 PS01031; HSP20 

PRINTS