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UniProtKB - P00903 (PABA_ECOLI)

Entry version 164 (07 Apr 2021)
Sequence version 1 (21 Jul 1986)
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Protein

Aminodeoxychorismate synthase component 2

Gene

pabA

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

Part of a heterodimeric complex that catalyzes the two-step biosynthesis of 4-amino-4-deoxychorismate (ADC), a precursor of p-aminobenzoate (PABA) and tetrahydrofolate. In the first step, a glutamine amidotransferase (PabA) generates ammonia as a substrate that, along with chorismate, is used in the second step, catalyzed by aminodeoxychorismate synthase (PabB) to produce ADC. PabA converts glutamine into glutamate only in the presence of stoichiometric amounts of PabB.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 <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

Inhibited by 6-diazo-5-oxo-L-norleucine (DON). The inhibition is competitive with glutamine, but uncompetitive with chorismate.1 Publication

<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

  1. KM=4.2 µM for chorismate (with the heterodimer PabA-PabB and glutamine as the amino donor at pH 7.5)1 Publication
  2. KM=18.6 µM for chorismate (with the heterodimer PabA-PabB and ammonia as the amino donor at pH 7.5)1 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: tetrahydrofolate biosynthesis

    This protein is involved in step 1 of the subpathway that synthesizes 4-aminobenzoate from chorismate.
    Proteins known to be involved in the 2 steps of the subpathway in this organism are:
    1. Aminodeoxychorismate synthase component 1 (pabB), Aminodeoxychorismate synthase component 2 (pabA)
    2. Aminodeoxychorismate lyase (pabC)
    This subpathway is part of the pathway tetrahydrofolate biosynthesis, which is itself part of Cofactor biosynthesis.
    View all proteins of this organism that are known to be involved in the subpathway that synthesizes 4-aminobenzoate from chorismate, the pathway tetrahydrofolate biosynthesis and in Cofactor biosynthesis.

    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 sitei791 Publication1
    Active sitei1681 Publication1
    Active sitei1701 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

    • 4-amino-4-deoxychorismate synthase activity Source: UniProtKB
    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 functionTransferase
    Biological processFolate biosynthesis

    Enzyme and pathway databases

    BioCyc Collection of Pathway/Genome Databases

    More...    BioCyci    		EcoCyc:PABASYN-COMPII-MONOMER
    MetaCyc:PABASYN-COMPII-MONOMER

    SABIO-RK: Biochemical Reaction Kinetics Database

    More...    SABIO-RKi    		P00903

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

    More...    UniPathwayi    		UPA00077;UER00149

    Protein family/group databases

    MEROPS protease database

    More...    MEROPSi    		C26.955

    <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:
    Aminodeoxychorismate synthase component 2 (EC:2.6.1.85)
    Short name:
    ADC synthase
    Short name:
    ADCS
    Alternative name(s):
    4-amino-4-deoxychorismate synthase component 2
    Aminodeoxychorismate synthase, glutamine amidotransferase component
    <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:pabA
    Ordered Locus Names:b3360, JW3323
    <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 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 do not produce 4-aminobenzoate.1 Publication

    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>Mutagenesisi79C → S: 10000-fold decrease in catalytic efficiency. 1 Publication1
    Mutagenesisi168H → Q: Loss of activity. 1 Publication1
    Mutagenesisi170E → A: 150-fold decrease in catalytic efficiency. 1 Publication1
    Mutagenesisi170E → D: 4-fold decrease in catalytic efficiency. 1 Publication1
    Mutagenesisi170E → K or Q: Loss of activity. 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_00000568491 – 187Aminodeoxychorismate synthase component 2Add BLAST187

    Proteomic databases

    jPOST - Japan Proteome Standard Repository/Database

    More...    jPOSTi    		P00903

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

    More...    PaxDbi    		P00903

    PRoteomics IDEntifications database

    More...    PRIDEi    		P00903

    <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

    Monomer. Heterodimer consisting of two non-identical subunits: a glutamine amidotransferase subunit (PabA) and a aminodeoxychorismate synthase subunit (PabB).

    1 Publication

    Protein-protein interaction databases

    The Biological General Repository for Interaction Datasets (BioGRID)

    More...    BioGRIDi    		4262475, 89 interactors
    852184, 2 interactors

    ComplexPortal: manually curated resource of macromolecular complexes

    More...    ComplexPortali    		CPX-5245, Aminodeoxychorismate synthase complex

    Database of interacting proteins

    More...    DIPi    		DIP-10433N

    Protein interaction database and analysis system

    More...    IntActi    		P00903, 6 interactors

    STRING: functional protein association networks

    More...    STRINGi    		511145.b3360

    <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    		P00903

    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>Domaini1 – 187Glutamine amidotransferase type-1PROSITE-ProRule annotationAdd BLAST187

    Keywords - Domaini

    Glutamine amidotransferase

    Phylogenomic databases

    evolutionary genealogy of genes: Non-supervised Orthologous Groups

    More...    eggNOGi    		COG0512, Bacteria

    The HOGENOM Database of Homologous Genes from Fully Sequenced Organisms

    More...    HOGENOMi    		CLU_014340_1_2_6

    InParanoid: Eukaryotic Ortholog Groups

    More...    InParanoidi    		P00903

    Database for complete collections of gene phylogenies

    More...    PhylomeDBi    		P00903

    Family and domain databases

    Conserved Domains Database

    More...    CDDi    		cd01743, GATase1_Anthranilate_Synthase, 1 hit

    Gene3D Structural and Functional Annotation of Protein Families

    More...    Gene3Di    		3.40.50.880, 1 hit

    Integrated resource of protein families, domains and functional sites

    More...    InterProi    		View protein in InterPro
    IPR029062, Class_I_gatase-like
    IPR017926, GATASE
    IPR006221, TrpG/PapA_dom

    Pfam protein domain database

    More...    Pfami    		View protein in Pfam
    PF00117, GATase, 1 hit

    Superfamily database of structural and functional annotation

    More...    SUPFAMi    		SSF52317, SSF52317, 1 hit

    TIGRFAMs; a protein family database

    More...    TIGRFAMsi    		TIGR00566, trpG_papA, 1 hit

    PROSITE; a protein domain and family database

    More...    PROSITEi    		View protein in PROSITE
    PS51273, GATASE_TYPE_1, 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.

    P00903-1 [UniParc]FASTAAdd to basket
    « Hide
            10         20         30         40         50
    MILLIDNYDS FTWNLYQYFC ELGADVLVKR NDALTLADID ALKPQKIVIS 
            60         70         80         90        100
    PGPCTPDEAG ISLDVIRHYA GRLPILGVCL GHQAMAQAFG GKVVRAAKVM 
           110        120        130        140        150
    HGKTSPITHN GEGVFRGLAN PLTVTRYHSL VVEPDSLPAC FDVTAWSETR 
           160        170        180 
    EIMGIRHRQW DLEGVQFHPE SILSEQGHQL LANFLHR
    Length:187
    Mass (Da):20,772
    Last modified:July 21, 1986 - 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:i0E5F43499D5F55C6
    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
    		M28363 Genomic DNA Translation: AAA23774.1
    K00030 Genomic DNA Translation: AAA24260.1
    M32354 Genomic DNA Translation: AAA24264.1
    U18997 Genomic DNA Translation: AAA58157.1
    U00096 Genomic DNA Translation: AAC76385.1
    AP009048 Genomic DNA Translation: BAE77930.1

    Protein sequence database of the Protein Information Resource

    More...    PIRi    		A01124, AGEC2

    NCBI Reference Sequences

    More...    RefSeqi    		NP_417819.1, NC_000913.3
    WP_000601847.1, NZ_STEB01000004.1

    Genome annotation databases

    Ensembl bacterial and archaeal genome annotation project

    More...    EnsemblBacteriai    		AAC76385; AAC76385; b3360
    BAE77930; BAE77930; BAE77930

    Database of genes from NCBI RefSeq genomes

    More...    GeneIDi    		947873

    KEGG: Kyoto Encyclopedia of Genes and Genomes

    More...    KEGGi    		ecj:JW3323
    eco:b3360

    Pathosystems Resource Integration Center (PATRIC)

    More...    PATRICi    		fig|1411691.4.peg.3370

    <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
    		M28363 Genomic DNA Translation: AAA23774.1
    K00030 Genomic DNA Translation: AAA24260.1
    M32354 Genomic DNA Translation: AAA24264.1
    U18997 Genomic DNA Translation: AAA58157.1
    U00096 Genomic DNA Translation: AAC76385.1
    AP009048 Genomic DNA Translation: BAE77930.1
    PIRiA01124, AGEC2
    RefSeqiNP_417819.1, NC_000913.3
    WP_000601847.1, NZ_STEB01000004.1

    3D structure databases

    SMRiP00903
    ModBaseiSearch...

    Protein-protein interaction databases

    BioGRIDi4262475, 89 interactors
    852184, 2 interactors
    ComplexPortaliCPX-5245, Aminodeoxychorismate synthase complex
    DIPiDIP-10433N
    IntActiP00903, 6 interactors
    STRINGi511145.b3360

    Protein family/group databases

    MEROPSiC26.955

    Proteomic databases

    jPOSTiP00903
    PaxDbiP00903
    PRIDEiP00903

    Genome annotation databases

    EnsemblBacteriaiAAC76385; AAC76385; b3360
    BAE77930; BAE77930; BAE77930
    GeneIDi947873
    KEGGiecj:JW3323
    eco:b3360
    PATRICifig|1411691.4.peg.3370

    Organism-specific databases

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

    More...    EchoBASEi    		EB0676

    Phylogenomic databases

    eggNOGiCOG0512, Bacteria
    HOGENOMiCLU_014340_1_2_6
    InParanoidiP00903
    PhylomeDBiP00903

    Enzyme and pathway databases

    UniPathwayiUPA00077;UER00149
    BioCyciEcoCyc:PABASYN-COMPII-MONOMER
    MetaCyc:PABASYN-COMPII-MONOMER
    SABIO-RKiP00903

    Miscellaneous databases

    Protein Ontology

    More...    PROi    		PR:P00903

    Family and domain databases

    CDDicd01743, GATase1_Anthranilate_Synthase, 1 hit
    Gene3Di3.40.50.880, 1 hit
    InterProiView protein in InterPro
    IPR029062, Class_I_gatase-like
    IPR017926, GATASE
    IPR006221, TrpG/PapA_dom
    PfamiView protein in Pfam
    PF00117, GATase, 1 hit
    SUPFAMiSSF52317, SSF52317, 1 hit
    TIGRFAMsiTIGR00566, trpG_papA, 1 hit
    PROSITEiView protein in PROSITE
    PS51273, GATASE_TYPE_1, 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 nameiPABA_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: P00903
    Secondary accession number(s): Q2M726
    <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 21, 1986
    Last sequence update: July 21, 1986
    Last modified: April 7, 2021
    This is version 164 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. PATHWAY comments
      Index of metabolic and biosynthesis pathways
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