ID A3UBG3_CROAH Unreviewed; 253 AA.
AC A3UBG3;
DT 03-APR-2007, integrated into UniProtKB/TrEMBL.
DT 03-APR-2007, sequence version 1.
DT 27-MAR-2024, entry version 103.
DE RecName: Full=Tryptophan synthase alpha chain {ECO:0000256|HAMAP-Rule:MF_00131};
DE EC=4.2.1.20 {ECO:0000256|HAMAP-Rule:MF_00131};
GN Name=trpA {ECO:0000256|HAMAP-Rule:MF_00131};
GN OrderedLocusNames=CA2559_08026 {ECO:0000313|EMBL:EAP85964.1};
OS Croceibacter atlanticus (strain ATCC BAA-628 / HTCC2559 / KCTC 12090).
OC Bacteria; Bacteroidota; Flavobacteriia; Flavobacteriales;
OC Flavobacteriaceae; Croceibacter.
OX NCBI_TaxID=216432 {ECO:0000313|EMBL:EAP85964.1, ECO:0000313|Proteomes:UP000002297};
RN [1] {ECO:0000313|EMBL:EAP85964.1, ECO:0000313|Proteomes:UP000002297}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-628 / HTCC2559 / KCTC 12090
RC {ECO:0000313|Proteomes:UP000002297};
RX PubMed=20639333; DOI=10.1128/JB.00733-10;
RA Oh H.M., Kang I., Ferriera S., Giovannoni S.J., Cho J.C.;
RT "The complete genome sequence of Croceibacter atlanticus HTCC2559T.";
RL J. Bacteriol. 192:4796-4797(2010).
CC -!- FUNCTION: The alpha subunit is responsible for the aldol cleavage of
CC indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate.
CC {ECO:0000256|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:0000256|ARBA:ARBA00000003, ECO:0000256|HAMAP-
CC Rule:MF_00131};
CC -!- PATHWAY: Amino-acid biosynthesis; L-tryptophan biosynthesis; L-
CC tryptophan from chorismate: step 5/5. {ECO:0000256|ARBA:ARBA00004733,
CC ECO:0000256|HAMAP-Rule:MF_00131}.
CC -!- SUBUNIT: Tetramer of two alpha and two beta chains.
CC {ECO:0000256|ARBA:ARBA00011270, ECO:0000256|HAMAP-Rule:MF_00131}.
CC -!- SIMILARITY: Belongs to the TrpA family. {ECO:0000256|HAMAP-
CC Rule:MF_00131, ECO:0000256|RuleBase:RU003662}.
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DR EMBL; CP002046; EAP85964.1; -; Genomic_DNA.
DR RefSeq; WP_013187350.1; NC_014230.1.
DR AlphaFoldDB; A3UBG3; -.
DR STRING; 216432.CA2559_08026; -.
DR KEGG; cat:CA2559_08026; -.
DR eggNOG; COG0159; Bacteria.
DR HOGENOM; CLU_016734_0_0_10; -.
DR OrthoDB; 9804578at2; -.
DR UniPathway; UPA00035; UER00044.
DR Proteomes; UP000002297; 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; Aldolase class I; 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 NCBIfam; TIGR00262; trpA; 1.
DR PANTHER; PTHR43406:SF1; TRYPTOPHAN SYNTHASE ALPHA CHAIN, CHLOROPLASTIC; 1.
DR PANTHER; PTHR43406; TRYPTOPHAN SYNTHASE, ALPHA CHAIN; 1.
DR Pfam; PF00290; Trp_syntA; 1.
DR SUPFAM; SSF51366; Ribulose-phoshate binding barrel; 1.
DR PROSITE; PS00167; TRP_SYNTHASE_ALPHA; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW Rule:MF_00131};
KW Aromatic amino acid biosynthesis {ECO:0000256|ARBA:ARBA00023141,
KW ECO:0000256|HAMAP-Rule:MF_00131};
KW Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|HAMAP-Rule:MF_00131};
KW Reference proteome {ECO:0000313|Proteomes:UP000002297};
KW Tryptophan biosynthesis {ECO:0000256|ARBA:ARBA00022822, ECO:0000256|HAMAP-
KW Rule:MF_00131}.
FT ACT_SITE 45
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00131"
FT ACT_SITE 56
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00131"
SQ SEQUENCE 253 AA; 28001 MW; 62CEA85F14D1B1DD CRC64;
MNRIHKTLAE DKTLLSIYFT AGYPELNDTV TIIKSLEDSG VDMIEIGLPF SDPLADGPTI
QESSTKALQN GMTTKLLFEQ LRDIRSQVSI PLIIMGYFNP MLQFGFEAFC KECEAIGIDG
LIVPDLPLAE YEDHYKGIFE KHNLSNVFLI TPQTSDERIK QIDEASNAFI YMVSSASVTG
STSGFGEAQQ SYFKRIKDLN LTNPQIVGFG IKDEQTFKDA TANAKGAIIG SAFIKHLTKE
GVANIPQFVK TIR
//
