ID   TRPA_NOVAD              Reviewed;         266 AA.
AC   Q2G8S8;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   21-MAR-2006, sequence version 1.
DT   25-MAY-2022, entry version 86.
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=Saro_1301;
OS   Novosphingobium aromaticivorans (strain ATCC 700278 / DSM 12444 / CCUG
OS   56034 / CIP 105152 / NBRC 16084 / F199).
OC   Bacteria; Proteobacteria; Alphaproteobacteria; Sphingomonadales;
OC   Sphingomonadaceae; Novosphingobium.
OX   NCBI_TaxID=279238;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC 700278 / DSM 12444 / CCUG 56034 / CIP 105152 / NBRC 16084 /
RC   F199;
RG   US DOE Joint Genome Institute;
RA   Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA   Hammon N., Israni S., Pitluck S., Chain P., Malfatti S., Shin M.,
RA   Vergez L., Schmutz J., Larimer F., Land M., Kyrpides N., Ivanova N.,
RA   Fredrickson J., Balkwill D., Romine M.F., Richardson P.;
RT   "Complete sequence of Novosphingobium aromaticivorans DSM 12444.";
RL   Submitted (JAN-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; CP000248; ABD25745.1; -; Genomic_DNA.
DR   RefSeq; WP_011444959.1; NC_007794.1.
DR   AlphaFoldDB; Q2G8S8; -.
DR   SMR; Q2G8S8; -.
DR   STRING; 279238.Saro_1301; -.
DR   EnsemblBacteria; ABD25745; ABD25745; Saro_1301.
DR   KEGG; nar:Saro_1301; -.
DR   eggNOG; COG0159; Bacteria.
DR   HOGENOM; CLU_016734_0_0_5; -.
DR   OMA; LVMTYWN; -.
DR   OrthoDB; 912786at2; -.
DR   UniPathway; UPA00035; UER00044.
DR   Proteomes; UP000009134; 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..266
FT                   /note="Tryptophan synthase alpha chain"
FT                   /id="PRO_1000018241"
FT   ACT_SITE        45
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00131"
FT   ACT_SITE        56
FT                   /note="Proton acceptor"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00131"
SQ   SEQUENCE   266 AA;  27042 MW;  57EA218E3899D64D CRC64;
     MTRLSNAFAK GRPALVTFVT GGDPTPGATD AILDALVEGG ADVIELGMPF TDPMADGPAI
     QLANLRSLGA GTKTADVFRI AADFRARHPE VPLVLMGYAN PMVTRGPDWF AAECVKAGVD
     GVICVDIPPE EDPELGPALR GAGVSLIRLA TPTTDAARLP AVLEGSSGFL YYVSVAGITG
     MQQAAQASIE EAVARIKQSA TIPVAVGFGV RTPEQAAAIA KVADGVVVGS ALVDLVARHG
     ADAAGPVKEL TAALAAAVHS ARKEIA