ID F8DB72_HALXS Unreviewed; 293 AA.
AC F8DB72;
DT 21-SEP-2011, integrated into UniProtKB/TrEMBL.
DT 21-SEP-2011, sequence version 1.
DT 27-MAR-2024, entry version 68.
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=Halxa_4014 {ECO:0000313|EMBL:AEH38619.1};
OS Halopiger xanaduensis (strain DSM 18323 / JCM 14033 / SH-6).
OC Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Natrialbales;
OC Natrialbaceae; Halopiger.
OX NCBI_TaxID=797210 {ECO:0000313|EMBL:AEH38619.1, ECO:0000313|Proteomes:UP000006794};
RN [1] {ECO:0000313|EMBL:AEH38619.1, ECO:0000313|Proteomes:UP000006794}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=DSM 18323 / JCM 14033 / SH-6
RC {ECO:0000313|Proteomes:UP000006794};
RX PubMed=22675596; DOI=10.4056/sigs.2505605;
RA Anderson I., Tindall B.J., Rohde M., Lucas S., Han J., Lapidus A.,
RA Cheng J.F., Goodwin L., Pitluck S., Peters L., Pati A., Mikhailova N.,
RA Pagani I., Teshima H., Han C., Tapia R., Land M., Woyke T., Klenk H.P.,
RA Kyrpides N., Ivanova N.;
RT "Complete genome sequence of Halopiger xanaduensis type strain (SH-6(T)).";
RL Stand. Genomic Sci. 6:31-42(2012).
CC -!- FUNCTION: The alpha subunit is responsible for the aldol cleavage of
CC indoleglycerol phosphate to indole and glyceraldehyde 3-phosphate.
CC {ECO:0000256|ARBA:ARBA00003365, 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; CP002839; AEH38619.1; -; Genomic_DNA.
DR RefSeq; WP_013881505.1; NC_015666.1.
DR AlphaFoldDB; F8DB72; -.
DR STRING; 797210.Halxa_4014; -.
DR GeneID; 10798956; -.
DR KEGG; hxa:Halxa_4014; -.
DR eggNOG; arCOG01086; Archaea.
DR HOGENOM; CLU_016734_0_0_2; -.
DR OrthoDB; 25658at2157; -.
DR UniPathway; UPA00035; UER00044.
DR Proteomes; UP000006794; 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:UP000006794};
KW Tryptophan biosynthesis {ECO:0000256|ARBA:ARBA00022822, ECO:0000256|HAMAP-
KW Rule:MF_00131}.
FT REGION 270..293
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT ACT_SITE 57
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00131"
FT ACT_SITE 68
FT /note="Proton acceptor"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00131"
SQ SEQUENCE 293 AA; 31129 MW; 8E1078FACE79DDE4 CRC64;
MSDAATESET EYDSDVEAAI RENHPALITY ITAGDPSLED TKEYVEALDR GGSDLIELGL
PFSEPIAEGQ TIQAAINRAL EAGTTPEGFF ELVDDLETEA PLLVMTYYNM ILQYGDEPDV
RPFVERAADA GLSGIIVPDL PAEEADPLRE ACDDHGLDLV FIIAPTTEGQ RLDDIMSQVS
GFAYVQARLG TTGARANVST ATHDSLARLS EYDVPKAVGF GVSEGDHAAE IVEAGADGVI
VGSTLVDIIA SSDDTAEAVE RLEAKAAELK RGARRGADSI TVDAEDAPEP EQQ
//
