TRPG_ACETH
ID TRPG_ACETH Reviewed; 91 AA.
AC P14952;
DT 01-APR-1990, integrated into UniProtKB/Swiss-Prot.
DT 01-APR-1990, sequence version 1.
DT 03-AUG-2022, entry version 92.
DE RecName: Full=Anthranilate synthase component 2;
DE Short=AS;
DE Short=ASII;
DE EC=4.1.3.27;
DE AltName: Full=Anthranilate synthase, GATase component;
DE AltName: Full=Anthranilate synthase, glutamine amidotransferase component;
DE Flags: Fragment;
GN Name=trpG;
OS Acetivibrio thermocellus (Hungateiclostridium thermocellum) (Clostridium
OS thermocellum).
OC Bacteria; Firmicutes; Clostridia; Eubacteriales; Oscillospiraceae;
OC Acetivibrio.
OX NCBI_TaxID=1515;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RX PubMed=2732211; DOI=10.1093/oxfordjournals.jbchem.a122669;
RA Sato S., Nakada Y., Hon-Nami K., Yasui K., Shiratsuchi A.;
RT "Molecular cloning and the nucleotide sequence of the Clostridium
RT thermocellum trpE gene.";
RL J. Biochem. 105:362-366(1989).
CC -!- FUNCTION: Part of a heterotetrameric complex that catalyzes the two-
CC step biosynthesis of anthranilate, an intermediate in the biosynthesis
CC of L-tryptophan. In the first step, the glutamine-binding beta subunit
CC (TrpG) of anthranilate synthase (AS) provides the glutamine
CC amidotransferase activity which generates ammonia as a substrate that,
CC along with chorismate, is used in the second step, catalyzed by the
CC large alpha subunit of AS (TrpE) to produce anthranilate. In the
CC absence of TrpG, TrpE can synthesize anthranilate directly from
CC chorismate and high concentrations of ammonia (By similarity).
CC {ECO:0000250}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=chorismate + L-glutamine = anthranilate + H(+) + L-glutamate +
CC pyruvate; Xref=Rhea:RHEA:21732, ChEBI:CHEBI:15361, ChEBI:CHEBI:15378,
CC ChEBI:CHEBI:16567, ChEBI:CHEBI:29748, ChEBI:CHEBI:29985,
CC ChEBI:CHEBI:58359; EC=4.1.3.27;
CC -!- PATHWAY: Amino-acid biosynthesis; L-tryptophan biosynthesis; L-
CC tryptophan from chorismate: step 1/5.
CC -!- SUBUNIT: Heterotetramer consisting of two non-identical subunits: a
CC beta subunit (TrpG) and a large alpha subunit (TrpE). {ECO:0000250}.
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DR EMBL; D00399; BAA00301.1; -; Genomic_DNA.
DR PIR; PT0065; PT0065.
DR AlphaFoldDB; P14952; -.
DR SMR; P14952; -.
DR UniPathway; UPA00035; UER00040.
DR GO; GO:0004049; F:anthranilate synthase activity; IEA:UniProtKB-EC.
DR GO; GO:0006541; P:glutamine metabolic process; IEA:UniProtKB-KW.
DR GO; GO:0000162; P:tryptophan biosynthetic process; IEA:UniProtKB-UniPathway.
DR CDD; cd01743; GATase1_Anthranilate_Synthase; 1.
DR Gene3D; 3.40.50.880; -; 1.
DR InterPro; IPR029062; Class_I_gatase-like.
DR InterPro; IPR017926; GATASE.
DR InterPro; IPR006221; TrpG/PapA_dom.
DR Pfam; PF00117; GATase; 1.
DR SUPFAM; SSF52317; SSF52317; 1.
DR PROSITE; PS51273; GATASE_TYPE_1; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis; Aromatic amino acid biosynthesis;
KW Glutamine amidotransferase; Lyase; Tryptophan biosynthesis.
FT CHAIN 1..>91
FT /note="Anthranilate synthase component 2"
FT /id="PRO_0000056875"
FT DOMAIN 4..>91
FT /note="Glutamine amidotransferase type-1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00605"
FT ACT_SITE 82
FT /note="Nucleophile; for GATase activity"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00605"
FT BINDING 55..57
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000250|UniProtKB:P00900"
FT BINDING 86
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000250|UniProtKB:P00900"
FT NON_TER 91
SQ SEQUENCE 91 AA; 10272 MW; E5718595500BF1AF CRC64;
MIENILIIDN YDSFTYNLYQ YVGEISPNIE VYRNDKITLE KIEEMNPTHI IISPGPGFPK
DAGICIEAIR KFGRYIPILG VCLGHQAIGE A
