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Entry version 114 (02 Jun 2021)
Sequence version 3 (23 Jan 2007)
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Protein

2-hydroxymuconate tautomerase

Gene

ywhB

Organism
Bacillus subtilis (strain 168)
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

Catalyzes both 1,3- and 1,5-keto-enol tautomerization of the diacid 2-hydroxymuconate (2-hydroxy-2,4-hexadienedioate) to produce 2-oxo-4-hexenedioate. This reaction is highly stereoselective and produces a mixture of stereoisomers, where the (3S)-isomer of 2-oxo-4-hexenedioate predominates. Also catalyzes the tautomerization of 2-hydroxymuconate to 2-oxo-3-hexenedioate, however this reaction is slower and occurs after the tautomerization of 2-hydroxymuconate to 2-oxo-4-hexenedioate. Using 2-hydroxy-2,4-pentadienoate, phenylenolpyruvate, (p-hydroxyphenyl)-enolpyruvate and 2-hydroxy-2,4-heptadiene-1,7-dioate, YwhB is a highly efficient 1,3-keto-enol tautomerase, but clearly not a 1,5-keto-enol tautomerase. Tautomerization of the two monoacids 2-hydroxy-2,4-pentadienoate and phenylenolpyruvate produces a mixture of stereoisomers, where the (3R)-isomers predominate.

1 Publication

Miscellaneous

The mono- and diacids apparently bind in different orientations in the active site of YwhB, but the highly stereoselective nature of the YwhB reaction using a diacid suggests that the biological substrate for YwhB may be a diacid.1 Publication

<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 '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 3 (sec-1) for 2-hydroxy-2,4-heptadiene-1,7-dioate, 4.1 (sec-1) for (p-hydroxyphenyl)-enolpyruvate, 10 (sec-1) for 2-hydroxymuconate, 26 (sec-1) for 2-hydroxymuconate, 112 (sec-1) for 2-hydroxy-2,4-pentadienoate, 125 (sec-1) for phenylenolpyruvate.
  1. KM=76 µM for 2-hydroxymuconate (with 2-oxo-4-hexenedioate as product)1 Publication
  2. KM=160 µM for (p-hydroxyphenyl)-enolpyruvate1 Publication
  3. KM=243 µM for 2-hydroxy-2,4-pentadienoate1 Publication
  4. KM=300 µM for phenylenolpyruvate1 Publication
  5. KM=330 µM for 2-hydroxy-2,4-heptadiene-1,7-dioate1 Publication
  6. KM=940 µM for 2-hydroxymuconate (with 2-oxo-3-hexenedioate as product)1 Publication

    Sites

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <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 sitei2Proton acceptor; via imino nitrogen1 Publication1

    <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

    • isomerase activity Source: UniProtKB

    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 functionIsomerase

    Enzyme and pathway databases

    BioCyc Collection of Pathway/Genome Databases

    More...
    BioCyci
    BSUB:BSU37540-MONOMER
    MetaCyc:BSU37540-MONOMER

    SABIO-RK: Biochemical Reaction Kinetics Database

    More...
    SABIO-RKi
    P70994

    <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:
    2-hydroxymuconate tautomerase (EC:5.3.2.6)
    Alternative name(s):
    (2Z,4E)-2-hydroxyhexa-2,4-dienedioate keto-enol isomerase
    4-oxalocrotonate tautomerase
    Short name:
    4-OT
    <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:ywhB
    Ordered Locus Names:BSU37540
    <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>OrganismiBacillus subtilis (strain 168)
    <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 identifieri224308 [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 lineageiBacteriaFirmicutesBacilliBacillalesBacillaceaeBacillus
    <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
    • UP000001570 <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

    <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

    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>Mutagenesisi2P → A: Absence of tautomerase activity using 2-hydroxymuconate. For 2-hydroxy-2,4-pentadienoate and phenylenolpyruvate, a strong decrease of catalytic efficiency and a 2-fold decrease of affinity is observed. 1 Publication1
    Mutagenesisi12R → A: Absence of tautomerase activity using 2-hydroxymuconate. For 2-hydroxy-2,4-pentadienoate and phenylenolpyruvate, a strong decrease of catalytic efficiency and a 2-fold decrease of affinity is observed. 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 methionineiRemovedBy similarity
    <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_00002095232 – 622-hydroxymuconate tautomeraseAdd BLAST61

    Proteomic databases

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

    More...
    PaxDbi
    P70994

    PRoteomics IDEntifications database

    More...
    PRIDEi
    P70994

    <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

    Homohexamer.

    1 Publication

    Protein-protein interaction databases

    STRING: functional protein association networks

    More...
    STRINGi
    224308.BSU37540

    <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

    162
    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
    P70994

    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
    P70994

    <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

    Region

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the 'Family and Domains' section describes a region of interest that cannot be described in other subsections.<p><a href='/help/region' target='_top'>More...</a></p>Regioni9 – 12Substrate binding4

    <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

    Phylogenomic databases

    evolutionary genealogy of genes: Non-supervised Orthologous Groups

    More...
    eggNOGi
    COG1942, Bacteria

    InParanoid: Eukaryotic Ortholog Groups

    More...
    InParanoidi
    P70994

    Identification of Orthologs from Complete Genome Data

    More...
    OMAi
    MPIVQVE

    Database for complete collections of gene phylogenies

    More...
    PhylomeDBi
    P70994

    Family and domain databases

    Conserved Domains Database

    More...
    CDDi
    cd00491, 4Oxalocrotonate_Tautomerase, 1 hit

    Gene3D Structural and Functional Annotation of Protein Families

    More...
    Gene3Di
    3.30.429.10, 1 hit

    Integrated resource of protein families, domains and functional sites

    More...
    InterProi
    View protein in InterPro
    IPR004370, 4-oxalocrotonate_tautomerase
    IPR014347, Tautomerase/MIF_sf
    IPR018191, Tautomerase_Pseudo-typ

    Pfam protein domain database

    More...
    Pfami
    View protein in Pfam
    PF01361, Tautomerase, 1 hit

    Superfamily database of structural and functional annotation

    More...
    SUPFAMi
    SSF55331, SSF55331, 1 hit

    TIGRFAMs; a protein family database

    More...
    TIGRFAMsi
    TIGR00013, taut, 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.

    P70994-1 [UniParc]FASTAAdd to basket
    « Hide
            10         20         30         40         50
    MPYVTVKMLE GRTDEQKRNL VEKVTEAVKE TTGASEEKIV VFIEEMRKDH
    60
    YAVAGKRLSD ME
    Length:62
    Mass (Da):7,145
    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:i1602EDEB61E412EE
    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
    Z80360 Genomic DNA Translation: CAB02512.1
    AL009126 Genomic DNA Translation: CAB15781.1

    Protein sequence database of the Protein Information Resource

    More...
    PIRi
    C70057

    NCBI Reference Sequences

    More...
    RefSeqi
    NP_391634.1, NC_000964.3
    WP_003222038.1, NZ_JNCM01000034.1

    Genome annotation databases

    Ensembl bacterial and archaeal genome annotation project

    More...
    EnsemblBacteriai
    CAB15781; CAB15781; BSU_37540

    Database of genes from NCBI RefSeq genomes

    More...
    GeneIDi
    50135669
    937098

    KEGG: Kyoto Encyclopedia of Genes and Genomes

    More...
    KEGGi
    bsu:BSU37540

    Pathosystems Resource Integration Center (PATRIC)

    More...
    PATRICi
    fig|224308.179.peg.4065

    <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
    Z80360 Genomic DNA Translation: CAB02512.1
    AL009126 Genomic DNA Translation: CAB15781.1
    PIRiC70057
    RefSeqiNP_391634.1, NC_000964.3
    WP_003222038.1, NZ_JNCM01000034.1

    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
    2OP8X-ray2.50A/B2-62[»]
    2OPAX-ray2.40A/B2-62[»]
    SMRiP70994
    ModBaseiSearch...
    PDBe-KBiSearch...

    Protein-protein interaction databases

    STRINGi224308.BSU37540

    Proteomic databases

    PaxDbiP70994
    PRIDEiP70994

    Genome annotation databases

    EnsemblBacteriaiCAB15781; CAB15781; BSU_37540
    GeneIDi50135669
    937098
    KEGGibsu:BSU37540
    PATRICifig|224308.179.peg.4065

    Phylogenomic databases

    eggNOGiCOG1942, Bacteria
    InParanoidiP70994
    OMAiMPIVQVE
    PhylomeDBiP70994

    Enzyme and pathway databases

    BioCyciBSUB:BSU37540-MONOMER
    MetaCyc:BSU37540-MONOMER
    SABIO-RKiP70994

    Miscellaneous databases

    EvolutionaryTraceiP70994

    Protein Ontology

    More...
    PROi
    PR:P70994

    Family and domain databases

    CDDicd00491, 4Oxalocrotonate_Tautomerase, 1 hit
    Gene3Di3.30.429.10, 1 hit
    InterProiView protein in InterPro
    IPR004370, 4-oxalocrotonate_tautomerase
    IPR014347, Tautomerase/MIF_sf
    IPR018191, Tautomerase_Pseudo-typ
    PfamiView protein in Pfam
    PF01361, Tautomerase, 1 hit
    SUPFAMiSSF55331, SSF55331, 1 hit
    TIGRFAMsiTIGR00013, taut, 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 namei4OT_BACSU
    <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: P70994
    <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: October 10, 2003
    Last sequence update: January 23, 2007
    Last modified: June 2, 2021
    This is version 114 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, Reference proteome

    Documents

    1. PDB cross-references
      Index of Protein Data Bank (PDB) cross-references
    2. SIMILARITY comments
      Index of protein domains and families
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