ID A0A172Q8D1_9STRE Unreviewed; 262 AA.
AC A0A172Q8D1;
DT 07-SEP-2016, integrated into UniProtKB/TrEMBL.
DT 07-SEP-2016, sequence version 1.
DT 24-JAN-2024, entry version 35.
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 ORFNames=A0O21_06795 {ECO:0000313|EMBL:AND79753.1};
OS Streptococcus pantholopis.
OC Bacteria; Bacillota; Bacilli; Lactobacillales; Streptococcaceae;
OC Streptococcus.
OX NCBI_TaxID=1811193 {ECO:0000313|EMBL:AND79753.1, ECO:0000313|Proteomes:UP000077317};
RN [1] {ECO:0000313|EMBL:AND79753.1, ECO:0000313|Proteomes:UP000077317}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=TA 26 {ECO:0000313|EMBL:AND79753.1,
RC ECO:0000313|Proteomes:UP000077317};
RX PubMed=27226124; DOI=10.1099/ijsem.0.001189;
RA Bai X., Xiong Y., Lu S., Jin D., Lai X., Yang J., Niu L., Hu S., Meng X.,
RA Pu J., Ye C., Xu J.;
RT "Streptococcuspantholopis sp. nov., isolated from faeces of the Tibetan
RT antelope (Pantholops hodgsonii).";
RL Int. J. Syst. Evol. Microbiol. 66:3281-3286(2016).
RN [2] {ECO:0000313|Proteomes:UP000077317}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=TA 26 {ECO:0000313|Proteomes:UP000077317};
RA Bai X.;
RT "Streptococcus antelopensis sp. nov., isolated from the feces of the
RT Tibetan antelope (Pantholops hodgsonii) in Hoh Xil National Nature Reserve,
RT Qinghai, China.";
RL Submitted (MAR-2016) 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: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; CP014699; AND79753.1; -; Genomic_DNA.
DR RefSeq; WP_067063378.1; NZ_CP014699.1.
DR AlphaFoldDB; A0A172Q8D1; -.
DR STRING; 1811193.A0O21_06795; -.
DR KEGG; spat:A0O21_06795; -.
DR OrthoDB; 9804578at2; -.
DR UniPathway; UPA00035; UER00044.
DR Proteomes; UP000077317; 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:UP000077317};
KW Tryptophan biosynthesis {ECO:0000256|ARBA:ARBA00022822, ECO:0000256|HAMAP-
KW Rule:MF_00131}.
FT ACT_SITE 52
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00131"
FT ACT_SITE 63
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00131"
SQ SEQUENCE 262 AA; 28589 MW; 1B56387C53C6A851 CRC64;
MIKTLTKHLQ TIQANGQGLF VPYIMAGDHK RGLDGLFETI DLLAASGASA IEVGIPWSDP
VADGPVIEAA GQRSLGRGTS LRAVIKKLQE KESPVPLLIM TYFNPVFQYG IEKFIADLES
TSVKGLIVPD LPHEHEDFIL PYLENTDIAL IPLVSLTTGV ERQIELTKHA EGFIYAVAVN
GVTGRVQGYQ DNLDEHLSSL HDIADIPVLT GFGVSTLADI ERFNRVSDGV IVGSKVVEAL
HQGQEAELSR FIRQAVFNNR VH
//
