TRPA_TRIV2
ID TRPA_TRIV2 Reviewed; 266 AA.
AC Q3MBD2;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 25-OCT-2005, sequence version 1.
DT 25-MAY-2022, entry version 89.
DE RecName: Full=Tryptophan synthase alpha chain {ECO:0000255|HAMAP-Rule:MF_00131};
DE EC=4.2.1.20 {ECO:0000255|HAMAP-Rule:MF_00131};
GN Name=trpA {ECO:0000255|HAMAP-Rule:MF_00131}; OrderedLocusNames=Ava_2082;
OS Trichormus variabilis (strain ATCC 29413 / PCC 7937) (Anabaena variabilis).
OC Bacteria; Cyanobacteria; Nostocales; Nostocaceae; Trichormus.
OX NCBI_TaxID=240292;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 29413 / PCC 7937;
RX PubMed=25197444; DOI=10.4056/sigs.3899418;
RA Thiel T., Pratte B.S., Zhong J., Goodwin L., Copeland A., Lucas S., Han C.,
RA Pitluck S., Land M.L., Kyrpides N.C., Woyke T.;
RT "Complete genome sequence of Anabaena variabilis ATCC 29413.";
RL Stand. Genomic Sci. 9:562-573(2014).
CC -!- FUNCTION: The alpha subunit is responsible for the aldol cleavage of
CC indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate.
CC {ECO:0000255|HAMAP-Rule:MF_00131}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=(1S,2R)-1-C-(indol-3-yl)glycerol 3-phosphate + L-serine = D-
CC glyceraldehyde 3-phosphate + H2O + L-tryptophan;
CC Xref=Rhea:RHEA:10532, ChEBI:CHEBI:15377, ChEBI:CHEBI:33384,
CC ChEBI:CHEBI:57912, ChEBI:CHEBI:58866, ChEBI:CHEBI:59776; EC=4.2.1.20;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00131};
CC -!- PATHWAY: Amino-acid biosynthesis; L-tryptophan biosynthesis; L-
CC tryptophan from chorismate: step 5/5. {ECO:0000255|HAMAP-
CC Rule:MF_00131}.
CC -!- SUBUNIT: Tetramer of two alpha and two beta chains. {ECO:0000255|HAMAP-
CC Rule:MF_00131}.
CC -!- SIMILARITY: Belongs to the TrpA family. {ECO:0000255|HAMAP-
CC Rule:MF_00131}.
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DR EMBL; CP000117; ABA21704.1; -; Genomic_DNA.
DR AlphaFoldDB; Q3MBD2; -.
DR SMR; Q3MBD2; -.
DR STRING; 240292.Ava_2082; -.
DR EnsemblBacteria; ABA21704; ABA21704; Ava_2082.
DR KEGG; ava:Ava_2082; -.
DR eggNOG; COG0159; Bacteria.
DR HOGENOM; CLU_016734_0_2_3; -.
DR OMA; LVMTYWN; -.
DR UniPathway; UPA00035; UER00044.
DR Proteomes; UP000002533; Chromosome.
DR GO; GO:0004834; F:tryptophan synthase activity; IEA:UniProtKB-UniRule.
DR CDD; cd04724; Tryptophan_synthase_alpha; 1.
DR Gene3D; 3.20.20.70; -; 1.
DR HAMAP; MF_00131; Trp_synth_alpha; 1.
DR InterPro; IPR013785; Aldolase_TIM.
DR InterPro; IPR011060; RibuloseP-bd_barrel.
DR InterPro; IPR018204; Trp_synthase_alpha_AS.
DR InterPro; IPR002028; Trp_synthase_suA.
DR PANTHER; PTHR43406; PTHR43406; 1.
DR Pfam; PF00290; Trp_syntA; 1.
DR SUPFAM; SSF51366; SSF51366; 1.
DR TIGRFAMs; TIGR00262; trpA; 1.
DR PROSITE; PS00167; TRP_SYNTHASE_ALPHA; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis; Aromatic amino acid biosynthesis; Lyase;
KW Tryptophan biosynthesis.
FT CHAIN 1..266
FT /note="Tryptophan synthase alpha chain"
FT /id="PRO_1000018165"
FT ACT_SITE 49
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00131"
FT ACT_SITE 60
FT /note="Proton acceptor"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00131"
SQ SEQUENCE 266 AA; 27985 MW; 420409081076A1EA CRC64;
MTAISDRFET LKQNQECALI PFITAGDPDL ETTAAALKIL DSNGADIIEL GIPYSDPLAD
GPVIQAAATR ALQNGTKLES VLEMLKVTTP SLQAPIVLFT YYNSILHRGI DNFLEQVAAA
GVAGLVVPDL PLEEAAGLLK PATERGIDLI LLIAPTSSSE RIEAIARSSQ GFIYLVSVTG
VTGMRSQVEG RVLDLLQKVR QVTDKPLGVG FGISQPAQAT QVRDWGADAA IVGSAFVQRL
ATGTPAEGLS AIAEFCQSLK AAIKTS