TRPG_LACLA
ID TRPG_LACLA Reviewed; 198 AA.
AC Q02003;
DT 01-APR-1993, integrated into UniProtKB/Swiss-Prot.
DT 01-APR-1993, sequence version 1.
DT 03-AUG-2022, entry version 132.
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;
GN Name=trpG; OrderedLocusNames=LL1469; ORFNames=L0053;
OS Lactococcus lactis subsp. lactis (strain IL1403) (Streptococcus lactis).
OC Bacteria; Firmicutes; Bacilli; Lactobacillales; Streptococcaceae;
OC Lactococcus.
OX NCBI_TaxID=272623;
RN [1]
RP NUCLEOTIDE SEQUENCE [GENOMIC DNA].
RC STRAIN=IL1403;
RX PubMed=1400208; DOI=10.1128/jb.174.20.6563-6570.1992;
RA Bardowski J., Ehrlich S.D., Chopin A.;
RT "Tryptophan biosynthesis genes in Lactococcus lactis subsp. lactis.";
RL J. Bacteriol. 174:6563-6570(1992).
RN [2]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=IL1403;
RX PubMed=11337471; DOI=10.1101/gr.gr-1697r;
RA Bolotin A., Wincker P., Mauger S., Jaillon O., Malarme K., Weissenbach J.,
RA Ehrlich S.D., Sorokin A.;
RT "The complete genome sequence of the lactic acid bacterium Lactococcus
RT lactis ssp. lactis IL1403.";
RL Genome Res. 11:731-753(2001).
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; M87483; AAA25224.1; -; Genomic_DNA.
DR EMBL; AE005176; AAK05567.1; -; Genomic_DNA.
DR PIR; S35125; S35125.
DR RefSeq; NP_267625.1; NC_002662.1.
DR RefSeq; WP_010905990.1; NC_002662.1.
DR AlphaFoldDB; Q02003; -.
DR SMR; Q02003; -.
DR STRING; 272623.L0053; -.
DR MEROPS; C26.A25; -.
DR PaxDb; Q02003; -.
DR EnsemblBacteria; AAK05567; AAK05567; L0053.
DR KEGG; lla:L0053; -.
DR PATRIC; fig|272623.7.peg.1579; -.
DR eggNOG; COG0512; Bacteria.
DR HOGENOM; CLU_014340_1_2_9; -.
DR OMA; TEHGHAM; -.
DR UniPathway; UPA00035; UER00040.
DR Proteomes; UP000002196; Chromosome.
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 TIGRFAMs; TIGR00566; trpG_papA; 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; Reference proteome;
KW Tryptophan biosynthesis.
FT CHAIN 1..198
FT /note="Anthranilate synthase component 2"
FT /id="PRO_0000056886"
FT DOMAIN 1..194
FT /note="Glutamine amidotransferase type-1"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00605"
FT ACT_SITE 77
FT /note="Nucleophile; for GATase activity"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00605"
FT ACT_SITE 168
FT /note="For GATase activity"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00605"
FT ACT_SITE 170
FT /note="For GATase activity"
FT /evidence="ECO:0000255|PROSITE-ProRule:PRU00605"
FT BINDING 50..52
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000250|UniProtKB:P00900"
FT BINDING 81
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000250|UniProtKB:P00900"
FT BINDING 128..129
FT /ligand="L-glutamine"
FT /ligand_id="ChEBI:CHEBI:58359"
FT /evidence="ECO:0000250|UniProtKB:P00900"
SQ SEQUENCE 198 AA; 21825 MW; 3692E302396FF24C CRC64;
MILIIDNYDS FTYNLVQYVG VLTDVAVVKN DDDSLGNMAE KADALIFSPG PGWPADAGKM
ETLIQQFAGQ KPILGICLGF QAIVEVFGGK LRLAHQVMHG KNSQVRQTSG NLIFNHLPSK
FLVMRYHSIV MDEAVALPDF AITAVATDDG EIMAIENEKE QIYGLQFHPE SIGTLDGMTM
IENFVNQVNE NKESSNEK
