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Protein

Small heat shock protein IbpA

Gene

ibpA

Organism
Pectobacterium atrosepticum (strain SCRI 1043 / ATCC BAA-672) (Erwinia carotovora subsp. atroseptica)
Status
Reviewed-Annotation score: Annotation score: 2 out of 5-Protein inferred from homologyi

Functioni

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.UniRule annotation

GO - Biological processi

Complete GO annotation...

Keywords - Molecular functioni

Chaperone

Keywords - Biological processi

Stress response

Names & Taxonomyi

Protein namesi
Recommended name:
Small heat shock protein IbpAUniRule annotation
Alternative name(s):
16 kDa heat shock protein AUniRule annotation
Gene namesi
Name:ibpAUniRule annotation
Ordered Locus Names:ECA4403
OrganismiPectobacterium atrosepticum (strain SCRI 1043 / ATCC BAA-672) (Erwinia carotovora subsp. atroseptica)
Taxonomic identifieri218491 [NCBI]
Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesPectobacteriaceaePectobacterium
Proteomesi
  • UP000007966 Componenti: Chromosome

Subcellular locationi

  • Cytoplasm UniRule annotation

GO - Cellular componenti

Complete GO annotation...

Keywords - Cellular componenti

Cytoplasm

PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
ChainiPRO_00001260201 – 137Small heat shock protein IbpAAdd BLAST137

Interactioni

Subunit structurei

Monomer. Forms homomultimers of about 100-150 subunits at optimal growth temperatures. Conformation changes to monomers at high temperatures or high ionic concentrations.UniRule annotation

Protein-protein interaction databases

STRINGi218491.ECA4403.

Structurei

3D structure databases

ProteinModelPortaliQ6CYV2.
ModBaseiSearch...
MobiDBiSearch...

Family & Domainsi

Sequence similaritiesi

Belongs to the small heat shock protein (HSP20) family.UniRule annotation

Phylogenomic databases

eggNOGiENOG4108ZNX. Bacteria.
COG0071. LUCA.
HOGENOMiHOG000251750.
KOiK04080.
OMAiTAHDNML.
OrthoDBiPOG091H0I9T.

Family and domain databases

Gene3Di2.60.40.790. 1 hit.
HAMAPiMF_02000. HSP20_IbpA. 1 hit.
InterProiIPR002068. A-crystallin/Hsp20_dom.
IPR031107. HSP20.
IPR008978. HSP20-like_chaperone.
IPR023728. HSP20_IbpA.
[Graphical view]
PANTHERiPTHR11527. PTHR11527. 1 hit.
PfamiPF00011. HSP20. 1 hit.
[Graphical view]
SUPFAMiSSF49764. SSF49764. 1 hit.
PROSITEiPS01031. HSP20. 1 hit.
[Graphical view]

Sequencei

Sequence statusi: Complete.

Q6CYV2-1 [UniParc]FASTAAdd to basket

« Hide

        10         20         30         40         50
MRNPDFSPLY RSAIGFDRLF NLLETGQTQS NGGYPPYNVE LVDENQYRIA
60 70 80 90 100
IAVAGFAEQE LDITAHDNLL IVKGAHAGEQ VARNYLYQGI AERNFERKFQ
110 120 130
LAEHIQVKGA NLENGLLYID LERIVPEAMK PRRIEIK
Length:137
Mass (Da):15,620
Last modified:August 16, 2004 - v1
Checksum:iE7C39B4D27E0A54B
GO

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BX950851 Genomic DNA. Translation: CAG77299.1.
RefSeqiWP_005976748.1. NC_004547.2.

Genome annotation databases

EnsemblBacteriaiCAG77299; CAG77299; ECA4403.
GeneIDi2882902.
KEGGieca:ECA4403.
PATRICi20484307. VBIPecAtr54885_4489.

Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
BX950851 Genomic DNA. Translation: CAG77299.1.
RefSeqiWP_005976748.1. NC_004547.2.

3D structure databases

ProteinModelPortaliQ6CYV2.
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

STRINGi218491.ECA4403.

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiCAG77299; CAG77299; ECA4403.
GeneIDi2882902.
KEGGieca:ECA4403.
PATRICi20484307. VBIPecAtr54885_4489.

Phylogenomic databases

eggNOGiENOG4108ZNX. Bacteria.
COG0071. LUCA.
HOGENOMiHOG000251750.
KOiK04080.
OMAiTAHDNML.
OrthoDBiPOG091H0I9T.

Family and domain databases

Gene3Di2.60.40.790. 1 hit.
HAMAPiMF_02000. HSP20_IbpA. 1 hit.
InterProiIPR002068. A-crystallin/Hsp20_dom.
IPR031107. HSP20.
IPR008978. HSP20-like_chaperone.
IPR023728. HSP20_IbpA.
[Graphical view]
PANTHERiPTHR11527. PTHR11527. 1 hit.
PfamiPF00011. HSP20. 1 hit.
[Graphical view]
SUPFAMiSSF49764. SSF49764. 1 hit.
PROSITEiPS01031. HSP20. 1 hit.
[Graphical view]
ProtoNetiSearch...

Entry informationi

Entry nameiIBPA_PECAS
AccessioniPrimary (citable) accession number: Q6CYV2
Entry historyi
Integrated into UniProtKB/Swiss-Prot: August 16, 2005
Last sequence update: August 16, 2004
Last modified: November 2, 2016
This is version 67 of the entry and version 1 of the sequence. [Complete history]
Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

Miscellaneousi

Keywords - Technical termi

Complete proteome, Reference proteome

Documents

  1. SIMILARITY comments
    Index of protein domains and families

Similar proteinsi

Links to similar proteins from the UniProt Reference Clusters (UniRef) at 100%, 90% and 50% sequence identity:
100%UniRef100 combines identical sequences and sub-fragments with 11 or more residues from any organism into one UniRef entry.
90%UniRef90 is built by clustering UniRef100 sequences that have at least 90% sequence identity to, and 80% overlap with, the longest sequence (a.k.a seed sequence).
50%UniRef50 is built by clustering UniRef90 seed sequences that have at least 50% sequence identity to, and 80% overlap with, the longest sequence in the cluster.