ID   TRPA_FRATF              Reviewed;         269 AA.
AC   A7N9D1;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   02-OCT-2007, sequence version 1.
DT   03-AUG-2022, entry version 71.
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=FTA_0106;
OS   Francisella tularensis subsp. holarctica (strain FTNF002-00 / FTA).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Thiotrichales;
OC   Francisellaceae; Francisella.
OX   NCBI_TaxID=458234;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=FTNF002-00 / FTA;
RX   PubMed=19756146; DOI=10.1371/journal.pone.0007041;
RA   Barabote R.D., Xie G., Brettin T.S., Hinrichs S.H., Fey P.D., Jay J.J.,
RA   Engle J.L., Godbole S.D., Noronha J.M., Scheuermann R.H., Zhou L.W.,
RA   Lion C., Dempsey M.P.;
RT   "Complete genome sequence of Francisella tularensis subspecies holarctica
RT   FTNF002-00.";
RL   PLoS ONE 4:E7041-E7041(2009).
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; CP000803; ABU60584.1; -; Genomic_DNA.
DR   RefSeq; WP_003014080.1; NC_009749.1.
DR   AlphaFoldDB; A7N9D1; -.
DR   SMR; A7N9D1; -.
DR   KEGG; fta:FTA_0106; -.
DR   HOGENOM; CLU_016734_0_4_6; -.
DR   OMA; LVMTYWN; -.
DR   UniPathway; UPA00035; UER00044.
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; 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.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Aromatic amino acid biosynthesis; Lyase;
KW   Tryptophan biosynthesis.
FT   CHAIN           1..269
FT                   /note="Tryptophan synthase alpha chain"
FT                   /id="PRO_1000018203"
FT   ACT_SITE        50
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00131"
FT   ACT_SITE        61
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00131"
SQ   SEQUENCE   269 AA;  29077 MW;  7205F63022675742 CRC64;
     MTNRYTTLFA NLEKRNEGAF IPFVTIGDPN KALSFEIIDT LVSSGADALE LGIPFSDHLA
     DGPTIQEANI RALESGITPK DCFDILTKIR AKYPHIPIGL LLYANLVYAN GIENFYQKCL
     DAGVDSILIA DVPAHESKEF RDIAKKVGIA QIFIAPPDAS ESTLKQISKL GSGYTYLLSR
     VGVTGTETAA NMPVEDVLAK LREYNAPKPV LGFGISKPEQ VQQAIKAGAA GAISGSATVK
     IIQNNISNKQ KMLNELTYFV KEMKAATLN