ID L0JXB2_9EURY Unreviewed; 292 AA.
AC L0JXB2;
DT 06-MAR-2013, integrated into UniProtKB/TrEMBL.
DT 06-MAR-2013, sequence version 1.
DT 24-JAN-2024, entry version 49.
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=Natoc_0638 {ECO:0000313|EMBL:AGB36498.1};
OS Natronococcus occultus SP4.
OC Archaea; Euryarchaeota; Stenosarchaea group; Halobacteria; Natrialbales;
OC Natrialbaceae; Natronococcus.
OX NCBI_TaxID=694430 {ECO:0000313|EMBL:AGB36498.1, ECO:0000313|Proteomes:UP000010878};
RN [1] {ECO:0000313|EMBL:AGB36498.1, ECO:0000313|Proteomes:UP000010878}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=SP4 {ECO:0000313|EMBL:AGB36498.1,
RC ECO:0000313|Proteomes:UP000010878};
RG DOE Joint Genome Institute;
RA Eisen J., Huntemann M., Wei C.-L., Han J., Detter J.C., Han C., Tapia R.,
RA Chen A., Kyrpides N., Mavromatis K., Markowitz V., Szeto E., Ivanova N.,
RA Mikhailova N., Ovchinnikova G., Pagani I., Pati A., Goodwin L.,
RA Nordberg H.P., Cantor M.N., Hua S.X., Woyke T., Eisen J., Klenk H.-P.,
RA Klenk H.-P.;
RT "FINISHED of Natronococcus occultus SP4, DSM 3396.";
RL Submitted (NOV-2012) 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|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; CP003929; AGB36498.1; -; Genomic_DNA.
DR RefSeq; WP_015319952.1; NC_019974.1.
DR AlphaFoldDB; L0JXB2; -.
DR STRING; 694430.Natoc_0638; -.
DR GeneID; 14405666; -.
DR KEGG; nou:Natoc_0638; -.
DR eggNOG; arCOG01086; Archaea.
DR HOGENOM; CLU_016734_0_0_2; -.
DR OrthoDB; 25658at2157; -.
DR UniPathway; UPA00035; UER00044.
DR Proteomes; UP000010878; 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:UP000010878};
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 292 AA; 30757 MW; 11F7F8BB58FDFD87 CRC64;
MSEIEDAIRE NHPALITYIT AGDPSLEDTK EYVEALDRGG ADLIELGLPF SEPIAEGPTI
QAAINRALEA GTTPEGFFEL VEDLETEAPL LVMTYYNMLL QYGPSEAQRA SEGDAAKPRN
EADVRPFVER AAEVGLSGII VPDLPAEEAG PLRSACDDHG LDLVFIVAPT TEGERLDRIM
SQISGFAYVQ ARLGTTGARA DVSNATHDSL ARLEEYDVPK AVGFGVSEGD HAAEIVEAGA
DGVIVGSALV DIIAEHGEGD VPAADALEAK AAELKRGAVR GAGVDVPEPE QP
//
