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UniProtKB - P31658 (HCHA_ECOLI)

Entry version 173 (02 Jun 2021)
Sequence version 3 (23 Jan 2007)
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Protein

Protein/nucleic acid deglycase 1

Gene

hchA

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

Protein and nucleotide deglycase that catalyzes the deglycation of the Maillard adducts formed between amino groups of proteins or nucleotides and reactive carbonyl groups of glyoxals (PubMed:26102038, PubMed:26774339, PubMed:28596309).

Thus, functions as a protein deglycase that repairs methylglyoxal- and glyoxal-glycated proteins, and releases repaired proteins and lactate or glycolate, respectively. Deglycates cysteine, arginine and lysine residues in proteins, and thus reactivates these proteins by reversing glycation by glyoxals. Is able to repair glycated serum albumin, aspartate aminotransferase, glyceraldehyde-3-phosphate dehydrogenase, and fructose biphosphate aldolase. Acts on early glycation intermediates (hemithioacetals and aminocarbinols), preventing the formation of Schiff bases and advanced glycation endproducts (AGE) that cause irreversible damage (PubMed:26102038, PubMed:26774339).

Also functions as a nucleotide deglycase able to repair glycated guanine in the free nucleotide pool (GTP, GDP, GMP, dGTP) and in DNA and RNA. Is thus involved in a major nucleotide repair system named guanine glycation repair (GG repair), dedicated to reversing methylglyoxal and glyoxal damage via nucleotide sanitization and direct nucleic acid repair (PubMed:28596309).

Has been reported to display chaperone, peptidase and glutathione-independent glyoxalase activities (PubMed:12235139, PubMed:12565879, PubMed:14731284, PubMed:15550391, PubMed:7848303, PubMed:21696459).

However, these apparently disparate activities are all recruited to execute its protein deglycase primary function (PubMed:26102038, PubMed:26774339).

Plays an important role in protecting cells from carbonyl stress, severe heat shock and starvation, as well as in acid resistance of stationary-phase cells (PubMed:12235139, PubMed:16796689, PubMed:17158627).

11 Publications

Miscellaneous

According to some authors, HchA exhibits an exceedingly weak proteolytic activity against bovine serum albumin (BSA) and some peptidase activity against small single amino acids conjugated to a fluorogenic reporter (PubMed:12939276). Another report showed that HchA does not display any significant proteolytic activity but displays a physiologically relevant aminopeptidase activity (PubMed:15550391).2 Publications

Caution

The protein deglycation activity has been ascribed to a TRIS buffer artifact by a publication (PubMed:27903648), which has then been rebutted by clear biochemical experiments showing that DJ-1 family deglycases are bona fide deglycases (PubMed:28013050). Deglycase activity is even strengthened by a novel article that reports nucleotide deglycation activity (PubMed:28596309).Curated

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes the catalytic activity of an enzyme, i.e. a chemical reaction that the enzyme catalyzes.<p><a href='/help/catalytic_activity' target='_top'>More...</a></p>Catalytic activityi

<p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section describes regulatory mechanisms for enzymes, transporters or microbial transcription factors, and reports the components which regulate (by activation or inhibition) the reaction.<p><a href='/help/activity_regulation' target='_top'>More...</a></p>Activity regulationi

The glyoxalase activity is inhibited by copper and zinc cations, activated by ferrous cations, and inactivated by thiol-blocking reagents (PubMed:21696459, PubMed:7848303). The aminopeptidase activity is inhibited by iodoacetamide, dithiothreitol, EDTA and 1, 10-phenanthroline (PubMed:15550391). Binding of ATP at high temperatures induces a conformational change that reduces HchA surface hydrophobicity, interferes with its ability to capture substrate proteins and inhibits chaperone activity (PubMed:12235139).4 Publications

<p>This subsection of the 'Function' section describes biophysical and chemical properties, such as maximal absorption, kinetic parameters, pH dependence, redox potentials and temperature dependence.<p><a href='/help/biophysicochemical_properties' target='_top'>More...</a></p>Kineticsi

kcat is 156.9 min(-1) for glyoxalase activity with methylglyoxal as substrate (PubMed:21696459). kcat is 0.43 min(-1) for aminopeptidase activity with Lys-AMC as substrate. kcat is 0.51 min(-1) for aminopeptidase activity with Arg-AMC as substrate. kcat is 1.1 min(-1) for aminopeptidase activity with Ala-AMC as substrate (PubMed:15550391).2 Publications
  1. KM=55 µM for Lys-AMC (at 37 degrees Celsius and pH 8.5)1 Publication
  2. KM=95 µM for Arg-AMC (at 37 degrees Celsius and pH 8.5)1 Publication
  3. KM=120 µM for Ala-AMC (at 37 degrees Celsius and pH 8.5)1 Publication
  4. KM=1.43 mM for methylglyoxal1 Publication

    pH dependencei

    Optimum pH is between 6 and 8 for glyoxalase activity (PubMed:21696459, PubMed:7848303). Significant inhibition of glyoxalase activity below pH 5 (PubMed:21696459). Optimum pH is 8 for aminopeptidase activity (PubMed:15550391).3 Publications

    Temperature dependencei

    Optimum temperature for glyoxalase activity is around 37 degrees Celsius (PubMed:21696459). Optimum temperature for aminopeptidase activity is around 43 degrees Celsius (PubMed:15550391).2 Publications

    Sites

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section indicates at which position the protein binds a given metal ion. The nature of the metal is indicated in the 'Description' field.<p><a href='/help/metal' target='_top'>More...</a></p>Metal bindingi86Zinc1 Publication1
    Metal bindingi91Zinc1 Publication1
    Metal bindingi123Zinc1 Publication1
    <p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">Function</a> section is used for enzymes and indicates the residues directly involved in catalysis.<p><a href='/help/act_site' target='_top'>More...</a></p>Active sitei185NucleophileCurated1

    <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

    Complete GO annotation on QuickGO ...

    GO - Biological processi

    Complete GO annotation on QuickGO ...

    <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, Hydrolase, Lyase
    Biological processDNA damage, DNA repair, Stress response
    LigandMetal-binding, Zinc

    Enzyme and pathway databases

    BioCyc Collection of Pathway/Genome Databases

    More...    BioCyci    		EcoCyc:G7055-MONOMER
    MetaCyc:G7055-MONOMER

    BRENDA Comprehensive Enzyme Information System

    More...    BRENDAi    		3.5.1.124, 2026
    4.2.1.130, 2026

    Protein family/group databases

    MEROPS protease database

    More...    MEROPSi    		C56.006

    MoonProt database of moonlighting proteins

    More...    MoonProti    		P31658

    <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%5Fand%5Ftaxonomy%5Fsection">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:
    Protein/nucleic acid deglycase 12 Publications (EC:3.1.2.-2 Publications, EC:3.5.1.-1 Publication, EC:3.5.1.1242 Publications)
    Alternative name(s):
    Glyoxalase III2 Publications (EC:4.2.1.1302 Publications)
    Holding molecular chaperone1 Publication
    Hsp311 Publication
    Maillard deglycase1 Publication
    <p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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:hchA
    Synonyms:yedU, yzzC
    Ordered Locus Names:b1967, JW1950
    <p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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%5Fand%5Ftaxonomy%5Fsection">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%5Fand%5Ftaxonomy%5Fsection">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 lineageiBacteria › Proteobacteria › Gammaproteobacteria › Enterobacterales › Enterobacteriaceae › Escherichia ›
    <p>This subsection of the <a href="http://www.uniprot.org/help/names%5Fand%5Ftaxonomy%5Fsection">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%5Fmanual">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

    <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

    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

    <p>This subsection of the 'Pathology and Biotech' section describes the in vivo effects caused by ablation of the gene (or one or more transcripts) coding for the protein described in the entry. This includes gene knockout and knockdown, provided experiments have been performed in the context of a whole organism or a specific tissue, and not at the single-cell level.<p><a href='/help/disruption_phenotype' target='_top'>More...</a></p>Disruption phenotypei

    Cells lacking this gene show a loss of glyoxalase and reduction in aminopeptidase activity (PubMed:15550391, PubMed:21696459). They accumulate methylglyoxal and are more susceptible to methylglyoxal than the parent strain (PubMed:21696459). Cells exhibit growth defects above 48 degrees Celsius and accumulate higher levels of peptides than wild-type (PubMed:14731284, PubMed:15550391). They display increased protein and DNA/RNA glycation levels, and exhibit strong mutator phenotypes (PubMed:26102038, PubMed:28596309). Moreover, the double and triple mutants lacking yhbO and yajL, and yhbO, yajL and hchA, respectively, display impressive amounts of glycated proteins, suggesting that the YhbO, YajL and Hsp31 deglycases display relatively redundant functions (PubMed:26774339). The triple mutant displays higher glycation levels of free nucleotides (GTP and dGTP) than the parental strain, and shows higher glycation levels of DNA and RNA than those of single mutants (PubMed:28596309). The hchA mutant cells show decreased viability in methylglyoxal- or glucose-containing media (PubMed:26774339).6 Publications

    Mutagenesis

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the <a href="http://www.uniprot.org/manual/pathology%5Fand%5Fbiotech%5Fsection">'Pathology and Biotech'</a> section describes the effect of the experimental mutation of one or more amino acid(s) on the biological properties of the protein.<p><a href='/help/mutagen' target='_top'>More...</a></p>Mutagenesisi77E → A: Loss of glyoxalase activity. 1 Publication1
    Mutagenesisi185C → A: Loss of glyoxalase and aminopeptidase activities. 3 Publications1
    Mutagenesisi186H → A: Shows approximately 17% remaining glyoxalase activity compared with that of the wild-type. 1 Publication1

    <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 <a href="http://www.uniprot.org/help/ptm%5Fprocessing%5Fsection">PTM / Processing</a> section indicates that the initiator methionine is cleaved from the mature protein.<p><a href='/help/init_met' target='_top'>More...</a></p>Initiator methionineiRemoved1 Publication
    <p>This subsection of the 'PTM / Processing' section describes the extent of a polypeptide chain in the mature protein following processing or proteolytic cleavage.<p><a href='/help/chain' target='_top'>More...</a></p>ChainiPRO_00002094122 – 283Protein/nucleic acid deglycase 1Add BLAST282

    Proteomic databases

    jPOST - Japan Proteome Standard Repository/Database

    More...    jPOSTi    		P31658

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

    More...    PaxDbi    		P31658

    PRoteomics IDEntifications database

    More...    PRIDEi    		P31658

    2D gel databases

    Two-dimensional polyacrylamide gel electrophoresis database from the Geneva University Hospital

    More...    SWISS-2DPAGEi    		P31658

    <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%5Fsection">'Interaction'</a> section provides information about the protein quaternary structure and interaction(s) with other proteins or protein complexes (with the exception of physiological receptor-ligand interactions which are annotated in the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section).<p><a href='/help/subunit_structure' target='_top'>More...</a></p>Subunit structurei

    Homodimer.

    3 Publications

    <p>This subsection of the '<a href="http://www.uniprot.org/help/interaction%5Fsection">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="https://www.ebi.ac.uk/intact/">IntAct database</a>. It is updated at every <a href="http://www.uniprot.org/help/synchronization">UniProt release</a>.<p><a href='/help/binary_interactions' target='_top'>More...</a></p>Binary interactionsi

    Protein-protein interaction databases

    The Biological General Repository for Interaction Datasets (BioGRID)

    More...    BioGRIDi    		4260394, 23 interactors
    850832, 1 interactor

    Database of interacting proteins

    More...    DIPi    		DIP-11851N

    Protein interaction database and analysis system

    More...    IntActi    		P31658, 32 interactors

    STRING: functional protein association networks

    More...    STRINGi    		511145.b1967

    <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

    1283
    Legend: HelixTurnBeta strandPDB Structure known for this area
    Show more details

    3D structure databases

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

    More...    SMRi    		P31658

    Database of comparative protein structure models

    More...    ModBasei    		Search...

    Protein Data Bank in Europe - Knowledge Base

    More...    PDBe-KBi    		Search...

    Miscellaneous databases

    Relative evolutionary importance of amino acids within a protein sequence

    More...    EvolutionaryTracei    		P31658

    <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 general information on the biological role of a domain. The term 'domain' is intended here in its wide acceptation, it may be a structural domain, a transmembrane region or a functional domain. Several domains are described in this subsection.<p><a href='/help/domain_cc' target='_top'>More...</a></p>Domaini

    Consists of a large A domain and a smaller P domain connected by a linker. The thermally induced motion of the flexible linker-loop region leads to the uncovering of a high-affinity substrate-binding site that is essential to capture nonnative proteins at high temperatures.1 Publication

    <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 peptidase C56 family. HchA subfamily.UniRule annotation

    Phylogenomic databases

    evolutionary genealogy of genes: Non-supervised Orthologous Groups

    More...    eggNOGi    		COG0693, Bacteria

    InParanoid: Eukaryotic Ortholog Groups

    More...    InParanoidi    		P31658

    Family and domain databases

    Gene3D Structural and Functional Annotation of Protein Families

    More...    Gene3Di    		3.40.50.880, 1 hit

    HAMAP database of protein families

    More...    HAMAPi    		MF_01046, Deglycase_HchA, 1 hit

    Integrated resource of protein families, domains and functional sites

    More...    InterProi    		View protein in InterPro
    IPR029062, Class_I_gatase-like
    IPR017283, HchA

    PIRSF; a whole-protein classification database

    More...    PIRSFi    		PIRSF037798, Chaperone_HchA, 1 hit

    Superfamily database of structural and functional annotation

    More...    SUPFAMi    		SSF52317, SSF52317, 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%5Flength">length</a> and <a href="http://www.uniprot.org/help/sequences">molecular weight</a>. The information is filed in different subsections. The current subsections and their content are listed below:<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%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">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.

    <p>This subsection of the <a href="http://www.uniprot.org/help/sequences%5Fsection">Sequence</a> section indicates if the <a href="http://www.uniprot.org/help/canonical%5Fand%5Fisoforms">canonical sequence</a> displayed by default in the entry is in its mature form or if it represents the precursor.<p><a href='/help/sequence_processing' target='_top'>More...</a></p>Sequence processingi: The displayed sequence is further processed into a mature form.

    P31658-1 [UniParc]FASTAAdd to basket
    « Hide
            10         20         30         40         50
    MTVQTSKNPQ VDIAEDNAFF PSEYSLSQYT SPVSDLDGVD YPKPYRGKHK 
            60         70         80         90        100
    ILVIAADERY LPTDNGKLFS TGNHPIETLL PLYHLHAAGF EFEVATISGL 
           110        120        130        140        150
    MTKFEYWAMP HKDEKVMPFF EQHKSLFRNP KKLADVVASL NADSEYAAIF 
           160        170        180        190        200
    VPGGHGALIG LPESQDVAAA LQWAIKNDRF VISLCHGPAA FLALRHGDNP 
           210        220        230        240        250
    LNGYSICAFP DAADKQTPEI GYMPGHLTWY FGEELKKMGM NIINDDITGR 
           260        270        280 
    VHKDRKLLTG DSPFAANALG KLAAQEMLAA YAG
    Length:283
    Mass (Da):31,190
    Last modified:January 23, 2007 - v3
    <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:i5CA8A53843A83B72
    GO

    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
    		U00096 Genomic DNA Translation: AAC75033.1
    AP009048 Genomic DNA Translation: BAA15794.1

    Protein sequence database of the Protein Information Resource

    More...    PIRi    		C64961

    NCBI Reference Sequences

    More...    RefSeqi    		NP_416476.1, NC_000913.3
    WP_000218212.1, NZ_LN832404.1

    Genome annotation databases

    Ensembl bacterial and archaeal genome annotation project

    More...    EnsemblBacteriai    		AAC75033; AAC75033; b1967
    BAA15794; BAA15794; BAA15794

    Database of genes from NCBI RefSeq genomes

    More...    GeneIDi    		946481

    KEGG: Kyoto Encyclopedia of Genes and Genomes

    More...    KEGGi    		ecj:JW1950
    eco:b1967

    Pathosystems Resource Integration Center (PATRIC)

    More...    PATRICi    		fig|1411691.4.peg.283

    <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
    		U00096 Genomic DNA Translation: AAC75033.1
    AP009048 Genomic DNA Translation: BAA15794.1
    PIRiC64961
    RefSeqiNP_416476.1, NC_000913.3
    WP_000218212.1, 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
    1IZYX-ray2.80A/B1-283[»]
    1IZZX-ray2.31A1-283[»]
    1N57X-ray1.60A1-283[»]
    1ONSX-ray2.20A2-283[»]
    1PV2X-ray2.71A/B/C/D/E/F/G/H1-283[»]
    SMRiP31658
    ModBaseiSearch...
    PDBe-KBiSearch...

    Protein-protein interaction databases

    BioGRIDi4260394, 23 interactors
    850832, 1 interactor
    DIPiDIP-11851N
    IntActiP31658, 32 interactors
    STRINGi511145.b1967

    Protein family/group databases

    MEROPSiC56.006
    MoonProtiP31658

    2D gel databases

    SWISS-2DPAGEiP31658

    Proteomic databases

    jPOSTiP31658
    PaxDbiP31658
    PRIDEiP31658

    Genome annotation databases

    EnsemblBacteriaiAAC75033; AAC75033; b1967
    BAA15794; BAA15794; BAA15794
    GeneIDi946481
    KEGGiecj:JW1950
    eco:b1967
    PATRICifig|1411691.4.peg.283

    Organism-specific databases

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

    More...    EchoBASEi    		EB1705

    Phylogenomic databases

    eggNOGiCOG0693, Bacteria
    InParanoidiP31658

    Enzyme and pathway databases

    BioCyciEcoCyc:G7055-MONOMER
    MetaCyc:G7055-MONOMER
    BRENDAi3.5.1.124, 2026
    4.2.1.130, 2026

    Miscellaneous databases

    EvolutionaryTraceiP31658

    Protein Ontology

    More...    PROi    		PR:P31658

    Family and domain databases

    Gene3Di3.40.50.880, 1 hit
    HAMAPiMF_01046, Deglycase_HchA, 1 hit
    InterProiView protein in InterPro
    IPR029062, Class_I_gatase-like
    IPR017283, HchA
    PIRSFiPIRSF037798, Chaperone_HchA, 1 hit
    SUPFAMiSSF52317, SSF52317, 1 hit

    MobiDB: a database of protein disorder and mobility annotations

    More...    MobiDBi    		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 nameiHCHA_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: P31658
    Secondary accession number(s): P76338
    <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%5Fand%5Fisoforms">canonical sequence</a> are also displayed.<p><a href='/help/entry_history' target='_top'>More...</a></p>Entry historyiIntegrated into UniProtKB/Swiss-Prot: July 1, 1993
    Last sequence update: January 23, 2007
    Last modified: June 2, 2021
    This is version 173 of the entry and version 3 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, Direct protein sequencing, Reference proteome

    Documents

    1. Peptidase families
      Classification of peptidase families and list of entries
    2. PDB cross-references
      Index of Protein Data Bank (PDB) cross-references
    3. SIMILARITY comments
      Index of protein domains and families
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