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Entry version 148 (07 Oct 2020)
Sequence version 1 (01 Feb 1997)
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Protein

N-acetylmuramic acid 6-phosphate etherase

Gene

murQ

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

Specifically catalyzes the cleavage of the D-lactyl ether substituent of MurNAc 6-phosphate, producing GlcNAc 6-phosphate and D-lactate. Is required for growth on MurNAc as the sole source of carbon and energy. Together with AnmK, is also required for the utilization of anhydro-N-acetylmuramic acid (anhMurNAc) either imported from the medium or derived from its own cell wall murein, and thus plays a role in cell wall recycling.2 Publications

Miscellaneous

A lyase-type mechanism (elimination/hydration) is suggested for the cleavage of the lactyl ether bond of MurNAc 6-phosphate, with the formation of an alpha,beta-unsaturated aldehyde intermediate with (E)-stereochemistry, followed by the syn addition of water to give product.

<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 5.7 s(-1).
  1. KM=1.20 mM for N-acetylmuramic acid 6-phosphate1 Publication

    <p>This subsection of the <a href="http://www.uniprot.org/help/function%5Fsection">'Function'</a> section describes the metabolic pathway(s) associated with a protein.<p><a href='/help/pathway' target='_top'>More...</a></p>Pathwayi: 1,6-anhydro-N-acetylmuramate degradation

    This protein is involved in the pathway 1,6-anhydro-N-acetylmuramate degradation, which is part of Amino-sugar metabolism.
    View all proteins of this organism that are known to be involved in the pathway 1,6-anhydro-N-acetylmuramate degradation and in Amino-sugar metabolism.

    Pathwayi: N-acetylmuramate degradation

    This protein is involved in the pathway N-acetylmuramate degradation, which is part of Amino-sugar metabolism.
    View all proteins of this organism that are known to be involved in the pathway N-acetylmuramate degradation and in Amino-sugar metabolism.

    Pathwayi: peptidoglycan recycling

    This protein is involved in the pathway peptidoglycan recycling, which is part of Cell wall biogenesis.
    View all proteins of this organism that are known to be involved in the pathway peptidoglycan recycling and in Cell wall biogenesis.

    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 sitei83Proton donor1 Publication1
    Active sitei1141 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

    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 functionLyase
    Biological processCarbohydrate metabolism

    Enzyme and pathway databases

    BioCyc Collection of Pathway/Genome Databases

    More...
    BioCyci
    EcoCyc:G7263-MONOMER
    MetaCyc:G7263-MONOMER

    UniPathway: a resource for the exploration and annotation of metabolic pathways

    More...
    UniPathwayi
    UPA00342
    UPA00343
    UPA00544

    <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:
    N-acetylmuramic acid 6-phosphate etherase (EC:4.2.1.126)
    Short name:
    MurNAc-6-P etherase
    Alternative name(s):
    N-acetylmuramic acid 6-phosphate hydrolase
    N-acetylmuramic acid 6-phosphate lyase
    <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:murQ
    Synonyms:yfeU
    Ordered Locus Names:b2428, JW2421
    <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 lineageiBacteriaProteobacteriaGammaproteobacteriaEnterobacteralesEnterobacteriaceaeEscherichia
    <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 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>Mutagenesisi83E → A: 10000-fold reduction in catalytic activity. 1 Publication1
    Mutagenesisi83E → Q: Loss of catalytic activity. 1 Publication1
    Mutagenesisi114E → Q: 2000-fold reduction in catalytic activity and 4-fold increase in substrate affinity. 1 Publication1
    Mutagenesisi115D → N: 7-fold reduction in catalytic activity and 1.5-fold increase in substrate affinity. 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 '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_00002148291 – 298N-acetylmuramic acid 6-phosphate etheraseAdd BLAST298

    Proteomic databases

    jPOST - Japan Proteome Standard Repository/Database

    More...
    jPOSTi
    P76535

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

    More...
    PaxDbi
    P76535

    PRoteomics IDEntifications database

    More...
    PRIDEi
    P76535

    <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

    Induced by MurNAc 6-phosphate that releases the repressor MurR from the DNA. Also up-regulated by the cAMP receptor protein crp via the binding of crp-cAMP to a class I site upstream of the murQ promoter. Repressed by MurR in the absence of MurNAc 6-phosphate.1 Publication

    <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.

    1 Publication

    Protein-protein interaction databases

    The Biological General Repository for Interaction Datasets (BioGRID)

    More...
    BioGRIDi
    4260569, 7 interactors

    Protein interaction database and analysis system

    More...
    IntActi
    P76535, 6 interactors

    STRING: functional protein association networks

    More...
    STRINGi
    511145.b2428

    <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

    3D structure databases

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

    More...
    SMRi
    P76535

    Database of comparative protein structure models

    More...
    ModBasei
    Search...

    <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

    Domains and Repeats

    Feature keyPosition(s)DescriptionActionsGraphical viewLength
    <p>This subsection of the <a href="http://www.uniprot.org/help/family%5Fand%5Fdomains%5Fsection">Family and Domains</a> section describes the position and type of a domain, which is defined as a specific combination of secondary structures organized into a characteristic three-dimensional structure or fold.<p><a href='/help/domain' target='_top'>More...</a></p>Domaini55 – 218SISAdd BLAST164

    <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
    COG2103, Bacteria

    The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

    More...
    HOGENOMi
    CLU_049049_1_1_6

    InParanoid: Eukaryotic Ortholog Groups

    More...
    InParanoidi
    P76535

    KEGG Orthology (KO)

    More...
    KOi
    K07106

    Database for complete collections of gene phylogenies

    More...
    PhylomeDBi
    P76535

    Family and domain databases

    Conserved Domains Database

    More...
    CDDi
    cd05007, SIS_Etherase, 1 hit

    HAMAP database of protein families

    More...
    HAMAPi
    MF_00068, MurQ, 1 hit

    Integrated resource of protein families, domains and functional sites

    More...
    InterProi
    View protein in InterPro
    IPR005488, Etherase_MurQ
    IPR005486, Glucokinase_regulatory_CS
    IPR040190, MURQ/GCKR
    IPR001347, SIS

    The PANTHER Classification System

    More...
    PANTHERi
    PTHR10088, PTHR10088, 1 hit
    PTHR10088:SF5, PTHR10088:SF5, 1 hit

    Pfam protein domain database

    More...
    Pfami
    View protein in Pfam
    PF01380, SIS, 1 hit

    TIGRFAMs; a protein family database

    More...
    TIGRFAMsi
    TIGR00274, TIGR00274, 1 hit

    PROSITE; a protein domain and family database

    More...
    PROSITEi
    View protein in PROSITE
    PS01272, GCKR, 1 hit
    PS51464, SIS, 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.

    P76535-1 [UniParc]FASTAAdd to basket
    « Hide
            10         20         30         40         50
    MQFEKMITEG SNTASAEIDR VSTLEMCRII NDEDKTVPLA VERVLPDIAA
    60 70 80 90 100
    AIDVIHAQVS GGGRLIYLGA GTSGRLGILD ASECPPTYGV KPGLVVGLIA
    110 120 130 140 150
    GGEYAIQHAV EGAEDSREGG VNDLKNINLT AQDVVVGIAA SGRTPYVIAG
    160 170 180 190 200
    LEYARQLGCR TVGISCNPGS AVSTTAEFAI TPIVGAEVVT GSSRMKAGTA
    210 220 230 240 250
    QKLVLNMLST GLMIKSGKVF GNLMVDVVAT NEKLHVRQVN IVKNATGCSA
    260 270 280 290
    EQAEAALIAC ERNCKTAIVM VLKNLDAAEA KKRLDQHGGF IRQVLDKE
    Length:298
    Mass (Da):31,220
    Last modified:February 1, 1997 - 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:i34FE8F878E8B3077
    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: AAC75481.1
    AP009048 Genomic DNA Translation: BAA16312.2

    Protein sequence database of the Protein Information Resource

    More...
    PIRi
    C65017

    NCBI Reference Sequences

    More...
    RefSeqi
    NP_416923.1, NC_000913.3
    WP_001159160.1, NZ_LN832404.1

    Genome annotation databases

    Ensembl bacterial and archaeal genome annotation project

    More...
    EnsemblBacteriai
    AAC75481; AAC75481; b2428
    BAA16312; BAA16312; BAA16312

    Database of genes from NCBI RefSeq genomes

    More...
    GeneIDi
    946893

    KEGG: Kyoto Encyclopedia of Genes and Genomes

    More...
    KEGGi
    ecj:JW2421
    eco:b2428

    Pathosystems Resource Integration Center (PATRIC)

    More...
    PATRICi
    fig|1411691.4.peg.4303

    <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: AAC75481.1
    AP009048 Genomic DNA Translation: BAA16312.2
    PIRiC65017
    RefSeqiNP_416923.1, NC_000913.3
    WP_001159160.1, NZ_LN832404.1

    3D structure databases

    SMRiP76535
    ModBaseiSearch...

    Protein-protein interaction databases

    BioGRIDi4260569, 7 interactors
    IntActiP76535, 6 interactors
    STRINGi511145.b2428

    Proteomic databases

    jPOSTiP76535
    PaxDbiP76535
    PRIDEiP76535

    Genome annotation databases

    EnsemblBacteriaiAAC75481; AAC75481; b2428
    BAA16312; BAA16312; BAA16312
    GeneIDi946893
    KEGGiecj:JW2421
    eco:b2428
    PATRICifig|1411691.4.peg.4303

    Organism-specific databases

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

    More...
    EchoBASEi
    EB3914

    Phylogenomic databases

    eggNOGiCOG2103, Bacteria
    HOGENOMiCLU_049049_1_1_6
    InParanoidiP76535
    KOiK07106
    PhylomeDBiP76535

    Enzyme and pathway databases

    UniPathwayiUPA00342
    UPA00343
    UPA00544
    BioCyciEcoCyc:G7263-MONOMER
    MetaCyc:G7263-MONOMER

    Miscellaneous databases

    Protein Ontology

    More...
    PROi
    PR:P76535

    Family and domain databases

    CDDicd05007, SIS_Etherase, 1 hit
    HAMAPiMF_00068, MurQ, 1 hit
    InterProiView protein in InterPro
    IPR005488, Etherase_MurQ
    IPR005486, Glucokinase_regulatory_CS
    IPR040190, MURQ/GCKR
    IPR001347, SIS
    PANTHERiPTHR10088, PTHR10088, 1 hit
    PTHR10088:SF5, PTHR10088:SF5, 1 hit
    PfamiView protein in Pfam
    PF01380, SIS, 1 hit
    TIGRFAMsiTIGR00274, TIGR00274, 1 hit
    PROSITEiView protein in PROSITE
    PS01272, GCKR, 1 hit
    PS51464, SIS, 1 hit

    ProtoNet; Automatic hierarchical classification of proteins

    More...
    ProtoNeti
    Search...

    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 nameiMURQ_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: P76535
    Secondary accession number(s): P76965, P76966, P76967
    <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: November 1, 1997
    Last sequence update: February 1, 1997
    Last modified: October 7, 2020
    This is version 148 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

    Reference proteome

    Documents

    1. Escherichia coli
      Escherichia coli (strain K12): entries and cross-references to EcoGene
    2. PATHWAY comments
      Index of metabolic and biosynthesis pathways
    3. SIMILARITY comments
      Index of protein domains and families
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