ID   TRPA_JANSC              Reviewed;         263 AA.
AC   Q28LB1;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   04-APR-2006, sequence version 1.
DT   25-MAY-2022, entry version 81.
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=Jann_3584;
OS   Jannaschia sp. (strain CCS1).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Rhodobacterales;
OC   Roseobacteraceae; Jannaschia; unclassified Jannaschia.
OX   NCBI_TaxID=290400;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=CCS1;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C.,
RA   Glavina del Rio T., Hammon N., Israni S., Pitluck S., Brettin T., Bruce D.,
RA   Han C., Tapia R., Gilna P., Chertkov O., Saunders E., Schmutz J.,
RA   Larimer F., Land M., Kyrpides N., Lykidis A., Moran M.A., Belas R., Ye W.,
RA   Buchan A., Gonzalez J.M., Schell M.A., Richardson P.;
RT   "Complete sequence of chromosome of Jannaschia sp. CCS1.";
RL   Submitted (FEB-2006) to the EMBL/GenBank/DDBJ databases.
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; CP000264; ABD56501.1; -; Genomic_DNA.
DR   RefSeq; WP_011456701.1; NC_007802.1.
DR   AlphaFoldDB; Q28LB1; -.
DR   SMR; Q28LB1; -.
DR   STRING; 290400.Jann_3584; -.
DR   EnsemblBacteria; ABD56501; ABD56501; Jann_3584.
DR   KEGG; jan:Jann_3584; -.
DR   eggNOG; COG0159; Bacteria.
DR   HOGENOM; CLU_016734_0_0_5; -.
DR   OMA; LVMTYWN; -.
DR   OrthoDB; 912786at2; -.
DR   UniPathway; UPA00035; UER00044.
DR   Proteomes; UP000008326; 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   Reference proteome; Tryptophan biosynthesis.
FT   CHAIN           1..263
FT                   /note="Tryptophan synthase alpha chain"
FT                   /id="PRO_1000018218"
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   263 AA;  27373 MW;  7AB94D2D3A04C0D8 CRC64;
     MTRIDDTFAR LSASGKKAFV SYIMAGDPDY ATSLEVMRGL PAAGVDIIEL GLPFTDPMAD
     GSTIQLAGQR ALDGGMTLDK TLQMVRDFRA GDDTTPIVLM GYYNPIYSRG VDRFLTDARE
     AGIDGLIVVD LPPEEDEELC IPAQAAGLNF IRLATPTTDD ARLPAVLSNT SGFLYYVSIT
     GITGAAAPQA ADVAPEVARI KSATDIPVIV GFGITTSEAA RTIAGVADGC VVGSAIVSRI
     AEGEPVADVL AFVKSLSDGA HAA