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Protein

33 kDa chaperonin

Gene

hslO

Organism
Escherichia coli (strain K12)
Status
Reviewed-Annotation score:

Annotation score:5 out of 5

<p>The annotation score provides a heuristic measure of the annotation content of a UniProtKB entry or proteome. This score <strong>cannot</strong> be used as a measure of the accuracy of the annotation as we cannot define the ‘correct annotation’ for any given protein.<p><a href='/help/annotation_score' target='_top'>More...</a></p>
-Experimental evidence at protein leveli <p>This indicates the type of evidence that supports the existence of the protein. Note that the ‘protein existence’ evidence does not give information on the accuracy or correctness of the sequence(s) displayed.<p><a href='/help/protein_existence' target='_top'>More...</a></p>

<p>This section provides any useful information about the protein, mostly biological knowledge.<p><a href='/help/function_section' target='_top'>More...</a></p>Functioni

Redox regulated molecular chaperone. Protects both thermally unfolding and oxidatively damaged proteins from irreversible aggregation. Plays an important role in the bacterial defense system toward oxidative stress.

<p>The <a href="http://www.geneontology.org/">Gene Ontology (GO)</a> project provides a set of hierarchical controlled vocabulary split into 3 categories:<p><a href='/help/gene_ontology' target='_top'>More...</a></p>GO - Molecular functioni

  • identical protein binding Source: IntAct
  • protein binding involved in protein folding Source: EcoCyc
  • unfolded protein binding Source: UniProtKB-UniRule
  • zinc ion binding Source: EcoCyc

GO - Biological processi

<p>UniProtKB Keywords constitute a <a href="http://www.uniprot.org/keywords">controlled vocabulary</a> with a hierarchical structure. Keywords summarise the content of a UniProtKB entry and facilitate the search for proteins of interest.<p><a href='/help/keywords' target='_top'>More...</a></p>Keywordsi

Molecular functionChaperone
Biological processStress response
LigandZinc

Enzyme and pathway databases

BioCyc Collection of Pathway/Genome Databases

More...
BioCyci
EcoCyc:G7744-MONOMER

<p>This section provides information about the protein and gene name(s) and synonym(s) and about the organism that is the source of the protein sequence.<p><a href='/help/names_and_taxonomy_section' target='_top'>More...</a></p>Names & Taxonomyi

<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides an exhaustive list of all names of the protein, from commonly used to obsolete, to allow unambiguous identification of a protein.<p><a href='/help/protein_names' target='_top'>More...</a></p>Protein namesi
Recommended name:
33 kDa chaperoninUniRule annotation
Alternative name(s):
Heat shock protein 33
Short name:
HSP33UniRule annotation
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section indicates the name(s) of the gene(s) that code for the protein sequence(s) described in the entry. Four distinct tokens exist: ‘Name’, ‘Synonyms’, ‘Ordered locus names’ and ‘ORF names’.<p><a href='/help/gene_name' target='_top'>More...</a></p>Gene namesi
Name:hslOUniRule annotation
Synonyms:yrfI
Ordered Locus Names:b3401, JW5692
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section provides information on the name(s) of the organism that is the source of the protein sequence.<p><a href='/help/organism-name' target='_top'>More...</a></p>OrganismiEscherichia coli (strain K12)
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section shows the unique identifier assigned by the NCBI to the source organism of the protein. This is known as the ‘taxonomic identifier’ or ‘taxid’.<p><a href='/help/taxonomic_identifier' target='_top'>More...</a></p>Taxonomic identifieri83333 [NCBI]
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section contains the taxonomic hierarchical classification lineage of the source organism. It lists the nodes as they appear top-down in the taxonomic tree, with the more general grouping listed first.<p><a href='/help/taxonomic_lineage' target='_top'>More...</a></p>Taxonomic lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
<p>This subsection of the <a href="http://www.uniprot.org/help/names_and_taxonomy_section">Names and taxonomy</a> section is present for entries that are part of a <a href="http://www.uniprot.org/proteomes">proteome</a>, i.e. of a set of proteins thought to be expressed by organisms whose genomes have been completely sequenced.<p><a href='/help/proteomes_manual' target='_top'>More...</a></p>Proteomesi
  • UP000000318 <p>A UniProt <a href="http://www.uniprot.org/manual/proteomes_manual">proteome</a> can consist of several components. <br></br>The component name refers to the genomic component encoding a set of proteins.<p><a href='/help/proteome_component' target='_top'>More...</a></p> Componenti: Chromosome
  • UP000000625 Componenti: Chromosome

Organism-specific databases

Escherichia coli strain K12 genome database

More...
EcoGenei
EG12930 hslO

<p>This section provides information on the location and the topology of the mature protein in the cell.<p><a href='/help/subcellular_location_section' target='_top'>More...</a></p>Subcellular locationi

GO - Cellular componenti

Keywords - Cellular componenti

Cytoplasm

<p>This section provides information on the disease(s) and phenotype(s) associated with a protein.<p><a href='/help/pathology_and_biotech_section' target='_top'>More...</a></p>Pathology & Biotechi

Chemistry databases

Drug and drug target database

More...
DrugBanki
DB03814 2-(N-Morpholino)-Ethanesulfonic Acid

<p>This section describes post-translational modifications (PTMs) and/or processing events.<p><a href='/help/ptm_processing_section' target='_top'>More...</a></p>PTM / Processingi

Molecule processing

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the ‘PTM / Processing’ section describes the extent of a polypeptide chain in the mature protein following processing.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00001921741 – 29233 kDa chaperoninAdd BLAST292

Amino acid modifications

Feature keyPosition(s)DescriptionActionsGraphical viewLength
<p>This subsection of the PTM / Processing":/help/ptm_processing_section section describes the positions of cysteine residues participating in disulfide bonds.<p><a href='/help/disulfid' target='_top'>More...</a></p>Disulfide bondi230 ↔ 232Redox-activeUniRule annotation1 Publication
Disulfide bondi263 ↔ 266Redox-activeUniRule annotation1 Publication

<p>This subsection of the <a href="http://www.uniprot.org/help/ptm_processing_section">PTM/processing</a> section describes post-translational modifications (PTMs). This subsection <strong>complements</strong> the information provided at the sequence level or describes modifications for which <strong>position-specific data is not yet available</strong>.<p><a href='/help/post-translational_modification' target='_top'>More...</a></p>Post-translational modificationi

Under oxidizing conditions two disulfide bonds are formed involving the reactive cysteines. Under reducing conditions zinc is bound to the reactive cysteines and the protein is inactive.

Keywords - PTMi

Disulfide bond

Proteomic databases

Encyclopedia of Proteome Dynamics

More...
EPDi
P0A6Y5

PaxDb, a database of protein abundance averages across all three domains of life

More...
PaxDbi
P0A6Y5

PRoteomics IDEntifications database

More...
PRIDEi
P0A6Y5

<p>This section provides information on the expression of a gene at the mRNA or protein level in cells or in tissues of multicellular organisms.<p><a href='/help/expression_section' target='_top'>More...</a></p>Expressioni

<p>This subsection of the ‘Expression’ section reports the experimentally proven effects of inducers and repressors (usually chemical compounds or environmental factors) on the level of protein (or mRNA) expression (up-regulation, down-regulation, constitutive expression).<p><a href='/help/induction' target='_top'>More...</a></p>Inductioni

By heat shock.

<p>This section provides information on the quaternary structure of a protein and on interaction(s) with other proteins or protein complexes.<p><a href='/help/interaction_section' target='_top'>More...</a></p>Interactioni

<p>This subsection of the '<a href="http://www.uniprot.org/help/interaction_section%27">Interaction</a> section provides information about binary protein-protein interactions. The data presented in this section are a quality-filtered subset of binary interactions automatically derived from the <a href="http://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated on a monthly basis. Each binary interaction is displayed on a separate line.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

GO - Molecular functioni

Protein-protein interaction databases

The Biological General Repository for Interaction Datasets (BioGrid)

More...
BioGridi
4262486, 11 interactors

Database of interacting proteins

More...
DIPi
DIP-48013N

Protein interaction database and analysis system

More...
IntActi
P0A6Y5, 11 interactors

Molecular INTeraction database

More...
MINTi
P0A6Y5

STRING: functional protein association networks

More...
STRINGi
316385.ECDH10B_3576

<p>This section provides information on the tertiary and secondary structure of a protein.<p><a href='/help/structure_section' target='_top'>More...</a></p>Structurei

Secondary structure

1292
Legend: HelixTurnBeta strandPDB Structure known for this area
Show more details

3D structure databases

Protein Model Portal of the PSI-Nature Structural Biology Knowledgebase

More...
ProteinModelPortali
P0A6Y5

SWISS-MODEL Repository - a database of annotated 3D protein structure models

More...
SMRi
P0A6Y5

Database of comparative protein structure models

More...
ModBasei
Search...

MobiDB: a database of protein disorder and mobility annotations

More...
MobiDBi
Search...

Miscellaneous databases

Relative evolutionary importance of amino acids within a protein sequence

More...
EvolutionaryTracei
P0A6Y5

<p>This section provides information on sequence similarities with other proteins and the domain(s) present in a protein.<p><a href='/help/family_and_domains_section' target='_top'>More...</a></p>Family & Domainsi

<p>This subsection of the ‘Family and domains’ section provides information about the sequence similarity with other proteins.<p><a href='/help/sequence_similarities' target='_top'>More...</a></p>Sequence similaritiesi

Belongs to the HSP33 family.UniRule annotation

Keywords - Domaini

Redox-active center

Phylogenomic databases

evolutionary genealogy of genes: Non-supervised Orthologous Groups

More...
eggNOGi
ENOG4105F4C Bacteria
COG1281 LUCA

The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

More...
HOGENOMi
HOG000261998

InParanoid: Eukaryotic Ortholog Groups

More...
InParanoidi
P0A6Y5

KEGG Orthology (KO)

More...
KOi
K04083

Database for complete collections of gene phylogenies

More...
PhylomeDBi
P0A6Y5

Family and domain databases

Conserved Domains Database

More...
CDDi
cd00498 Hsp33, 1 hit

Gene3D Structural and Functional Annotation of Protein Families

More...
Gene3Di
1.10.287.480, 1 hit
3.55.30.10, 1 hit
3.90.1280.10, 1 hit

HAMAP database of protein families

More...
HAMAPi
MF_00117 HslO, 1 hit

Integrated resource of protein families, domains and functional sites

More...
InterProi
View protein in InterPro
IPR000397 Heat_shock_Hsp33
IPR016154 Heat_shock_Hsp33_C
IPR016153 Heat_shock_Hsp33_N
IPR023212 Hsp33_helix_hairpin_bin_dom_sf

The PANTHER Classification System

More...
PANTHERi
PTHR30111 PTHR30111, 1 hit

Pfam protein domain database

More...
Pfami
View protein in Pfam
PF01430 HSP33, 1 hit

PIRSF; a whole-protein classification database

More...
PIRSFi
PIRSF005261 Heat_shock_Hsp33, 1 hit

Superfamily database of structural and functional annotation

More...
SUPFAMi
SSF118352 SSF118352, 1 hit
SSF64397 SSF64397, 1 hit

<p>This section displays by default the canonical protein sequence and upon request all isoforms described in the entry. It also includes information pertinent to the sequence(s), including <a href="http://www.uniprot.org/help/sequence_length">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>.<p><a href='/help/sequences_section' target='_top'>More...</a></p>Sequencei

<p>This subsection of the <a href="http://www.uniprot.org/help/sequences_section">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> displayed by default in the entry is complete or not.<p><a href='/help/sequence_status' target='_top'>More...</a></p>Sequence statusi: Complete.

P0A6Y5-1 [UniParc]FASTAAdd to basket
« Hide
        10         20         30         40         50
MPQHDQLHRY LFENFAVRGE LVTVSETLQQ ILENHDYPQP VKNVLAELLV
60 70 80 90 100
ATSLLTATLK FDGDITVQLQ GDGPMNLAVI NGNNNQQMRG VARVQGEIPE
110 120 130 140 150
NADLKTLVGN GYVVITITPS EGERYQGVVG LEGDTLAACL EDYFMRSEQL
160 170 180 190 200
PTRLFIRTGD VDGKPAAGGM LLQVMPAQNA QQDDFDHLAT LTETIKTEEL
210 220 230 240 250
LTLPANEVLW RLYHEEEVTV YDPQDVEFKC TCSRERCADA LKTLPDEEVD
260 270 280 290
SILAEDGEID MHCDYCGNHY LFNAMDIAEI RNNASPADPQ VH
Length:292
Mass (Da):32,534
Last modified:June 7, 2005 - v1
<p>The checksum is a form of redundancy check that is calculated from the sequence. It is useful for tracking sequence updates.</p> <p>It should be noted that while, in theory, two different sequences could have the same checksum value, the likelihood that this would happen is extremely low.</p> <p>However UniProtKB may contain entries with identical sequences in case of multiple genes (paralogs).</p> <p>The checksum is computed as the sequence 64-bit Cyclic Redundancy Check value (CRC64) using the generator polynomial: x<sup>64</sup> + x<sup>4</sup> + x<sup>3</sup> + x + 1. The algorithm is described in the ISO 3309 standard. </p> <p class="publication">Press W.H., Flannery B.P., Teukolsky S.A. and Vetterling W.T.<br /> <strong>Cyclic redundancy and other checksums</strong><br /> <a href="http://www.nrbook.com/b/bookcpdf.php">Numerical recipes in C 2nd ed., pp896-902, Cambridge University Press (1993)</a>)</p> Checksum:i18F05BD2F0257552
GO

<p>This subsection of the ‘Sequence’ section reports difference(s) between the protein sequence shown in the UniProtKB entry and other available protein sequences derived from the same gene.<p><a href='/help/sequence_caution' target='_top'>More...</a></p>Sequence cautioni

The sequence AAA58198 differs from that shown. Reason: Erroneous initiation. Translation N-terminally shortened.Curated

Sequence databases

Select the link destinations:

EMBL nucleotide sequence database

More...
EMBLi

GenBank nucleotide sequence database

More...
GenBanki

DNA Data Bank of Japan; a nucleotide sequence database

More...
DDBJi
Links Updated
U18997 Genomic DNA Translation: AAA58198.1 Different initiation.
U00096 Genomic DNA Translation: AAC76426.2
AP009048 Genomic DNA Translation: BAE77890.1

Protein sequence database of the Protein Information Resource

More...
PIRi
D65135

NCBI Reference Sequences

More...
RefSeqi
NP_417860.2, NC_000913.3
WP_001135574.1, NZ_LN832404.1

Genome annotation databases

Ensembl bacterial and archaeal genome annotation project

More...
EnsemblBacteriai
AAC76426; AAC76426; b3401
BAE77890; BAE77890; BAE77890

Database of genes from NCBI RefSeq genomes

More...
GeneIDi
947178

KEGG: Kyoto Encyclopedia of Genes and Genomes

More...
KEGGi
ecj:JW5692
eco:b3401

Pathosystems Resource Integration Center (PATRIC)

More...
PATRICi
fig|1411691.4.peg.3329

<p>This section provides links to proteins that are similar to the protein sequence(s) described in this entry at different levels of sequence identity thresholds (100%, 90% and 50%) based on their membership in UniProt Reference Clusters (<a href="http://www.uniprot.org/help/uniref">UniRef</a>).<p><a href='/help/similar_proteins_section' target='_top'>More...</a></p>Similar proteinsi

<p>This section is used to point to information related to entries and found in data collections other than UniProtKB.<p><a href='/help/cross_references_section' target='_top'>More...</a></p>Cross-referencesi

Sequence databases

Select the link destinations:
EMBLi
GenBanki
DDBJi
Links Updated
U18997 Genomic DNA Translation: AAA58198.1 Different initiation.
U00096 Genomic DNA Translation: AAC76426.2
AP009048 Genomic DNA Translation: BAE77890.1
PIRiD65135
RefSeqiNP_417860.2, NC_000913.3
WP_001135574.1, NZ_LN832404.1

3D structure databases

Select the link destinations:

Protein Data Bank Europe

More...
PDBei

Protein Data Bank RCSB

More...
RCSB PDBi

Protein Data Bank Japan

More...
PDBji
Links Updated
PDB entryMethodResolution (Å)ChainPositionsPDBsum
1HW7X-ray2.20A1-253[»]
1I7FX-ray2.70A1-292[»]
1XJHNMR-A225-285[»]
3M7MX-ray2.90X1-233[»]
ProteinModelPortaliP0A6Y5
SMRiP0A6Y5
ModBaseiSearch...
MobiDBiSearch...

Protein-protein interaction databases

BioGridi4262486, 11 interactors
DIPiDIP-48013N
IntActiP0A6Y5, 11 interactors
MINTiP0A6Y5
STRINGi316385.ECDH10B_3576

Chemistry databases

DrugBankiDB03814 2-(N-Morpholino)-Ethanesulfonic Acid

Proteomic databases

EPDiP0A6Y5
PaxDbiP0A6Y5
PRIDEiP0A6Y5

Protocols and materials databases

Structural Biology KnowledgebaseSearch...

Genome annotation databases

EnsemblBacteriaiAAC76426; AAC76426; b3401
BAE77890; BAE77890; BAE77890
GeneIDi947178
KEGGiecj:JW5692
eco:b3401
PATRICifig|1411691.4.peg.3329

Organism-specific databases

EchoBASE - an integrated post-genomic database for E. coli

More...
EchoBASEi
EB2766
EcoGeneiEG12930 hslO

Phylogenomic databases

eggNOGiENOG4105F4C Bacteria
COG1281 LUCA
HOGENOMiHOG000261998
InParanoidiP0A6Y5
KOiK04083
PhylomeDBiP0A6Y5

Enzyme and pathway databases

BioCyciEcoCyc:G7744-MONOMER

Miscellaneous databases

EvolutionaryTraceiP0A6Y5

Protein Ontology

More...
PROi
PR:P0A6Y5

Family and domain databases

CDDicd00498 Hsp33, 1 hit
Gene3Di1.10.287.480, 1 hit
3.55.30.10, 1 hit
3.90.1280.10, 1 hit
HAMAPiMF_00117 HslO, 1 hit
InterProiView protein in InterPro
IPR000397 Heat_shock_Hsp33
IPR016154 Heat_shock_Hsp33_C
IPR016153 Heat_shock_Hsp33_N
IPR023212 Hsp33_helix_hairpin_bin_dom_sf
PANTHERiPTHR30111 PTHR30111, 1 hit
PfamiView protein in Pfam
PF01430 HSP33, 1 hit
PIRSFiPIRSF005261 Heat_shock_Hsp33, 1 hit
SUPFAMiSSF118352 SSF118352, 1 hit
SSF64397 SSF64397, 1 hit

ProtoNet; Automatic hierarchical classification of proteins

More...
ProtoNeti
Search...

<p>This section provides general information on the entry.<p><a href='/help/entry_information_section' target='_top'>More...</a></p>Entry informationi

<p>This subsection of the ‘Entry information’ section provides a mnemonic identifier for a UniProtKB entry, but it is not a stable identifier. Each reviewed entry is assigned a unique entry name upon integration into UniProtKB/Swiss-Prot.<p><a href='/help/entry_name' target='_top'>More...</a></p>Entry nameiHSLO_ECOLI
<p>This subsection of the ‘Entry information’ section provides one or more accession number(s). These are stable identifiers and should be used to cite UniProtKB entries. Upon integration into UniProtKB, each entry is assigned a unique accession number, which is called ‘Primary (citable) accession number’.<p><a href='/help/accession_numbers' target='_top'>More...</a></p>AccessioniPrimary (citable) accession number: P0A6Y5
Secondary accession number(s): P45803, Q2M766
<p>This subsection of the ‘Entry information’ section shows the date of integration of the entry into UniProtKB, the date of the last sequence update and the date of the last annotation modification (‘Last modified’). The version number for both the entry and the <a href="http://www.uniprot.org/help/canonical_and_isoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: June 7, 2005
Last sequence update: June 7, 2005
Last modified: November 7, 2018
This is version 112 of the entry and version 1 of the sequence. See complete history.
<p>This subsection of the ‘Entry information’ section indicates whether the entry has been manually annotated and reviewed by UniProtKB curators or not, in other words, if the entry belongs to the Swiss-Prot section of UniProtKB (<strong>reviewed</strong>) or to the computer-annotated TrEMBL section (<strong>unreviewed</strong>).<p><a href='/help/entry_status' target='_top'>More...</a></p>Entry statusiReviewed (UniProtKB/Swiss-Prot)
Annotation programProkaryotic Protein Annotation Program

<p>This section contains any relevant information that doesn’t fit in any other defined sections<p><a href='/help/miscellaneous_section' target='_top'>More...</a></p>Miscellaneousi

Keywords - Technical termi

3D-structure, Complete proteome, Reference proteome

Documents

  1. PDB cross-references
    Index of Protein Data Bank (PDB) cross-references
  2. SIMILARITY comments
    Index of protein domains and families
  3. Escherichia coli
    Escherichia coli (strain K12): entries and cross-references to EcoGene
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