TRPB_FRATO
ID TRPB_FRATO Reviewed; 396 AA.
AC Q0BP45;
DT 15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT 17-OCT-2006, sequence version 1.
DT 03-AUG-2022, entry version 89.
DE RecName: Full=Tryptophan synthase beta chain {ECO:0000255|HAMAP-Rule:MF_00133};
DE EC=4.2.1.20 {ECO:0000255|HAMAP-Rule:MF_00133};
GN Name=trpB {ECO:0000255|HAMAP-Rule:MF_00133}; OrderedLocusNames=FTH_0093;
OS Francisella tularensis subsp. holarctica (strain OSU18).
OC Bacteria; Proteobacteria; Gammaproteobacteria; Thiotrichales;
OC Francisellaceae; Francisella.
OX NCBI_TaxID=393011;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=OSU18;
RX PubMed=16980500; DOI=10.1128/jb.00506-06;
RA Petrosino J.F., Xiang Q., Karpathy S.E., Jiang H., Yerrapragada S., Liu Y.,
RA Gioia J., Hemphill L., Gonzalez A., Raghavan T.M., Uzman A., Fox G.E.,
RA Highlander S., Reichard M., Morton R.J., Clinkenbeard K.D., Weinstock G.M.;
RT "Chromosome rearrangement and diversification of Francisella tularensis
RT revealed by the type B (OSU18) genome sequence.";
RL J. Bacteriol. 188:6977-6985(2006).
CC -!- FUNCTION: The beta subunit is responsible for the synthesis of L-
CC tryptophan from indole and L-serine. {ECO:0000255|HAMAP-Rule:MF_00133}.
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_00133};
CC -!- COFACTOR:
CC Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC Evidence={ECO:0000255|HAMAP-Rule:MF_00133};
CC -!- PATHWAY: Amino-acid biosynthesis; L-tryptophan biosynthesis; L-
CC tryptophan from chorismate: step 5/5. {ECO:0000255|HAMAP-
CC Rule:MF_00133}.
CC -!- SUBUNIT: Tetramer of two alpha and two beta chains. {ECO:0000255|HAMAP-
CC Rule:MF_00133}.
CC -!- SIMILARITY: Belongs to the TrpB family. {ECO:0000255|HAMAP-
CC Rule:MF_00133}.
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DR EMBL; CP000437; ABI82139.1; -; Genomic_DNA.
DR RefSeq; WP_003014081.1; NC_017463.1.
DR AlphaFoldDB; Q0BP45; -.
DR SMR; Q0BP45; -.
DR KEGG; fth:FTH_0093; -.
DR OMA; HGMKSYF; -.
DR UniPathway; UPA00035; UER00044.
DR GO; GO:0004834; F:tryptophan synthase activity; IEA:UniProtKB-UniRule.
DR CDD; cd06446; Trp-synth_B; 1.
DR Gene3D; 3.40.50.1100; -; 2.
DR HAMAP; MF_00133; Trp_synth_beta; 1.
DR InterPro; IPR001926; PLP-dep.
DR InterPro; IPR006653; Trp_synth_b_CS.
DR InterPro; IPR006654; Trp_synth_beta.
DR InterPro; IPR023026; Trp_synth_beta/beta-like.
DR InterPro; IPR036052; Trypto_synt_PLP_dependent.
DR Pfam; PF00291; PALP; 1.
DR PIRSF; PIRSF001413; Trp_syn_beta; 1.
DR SUPFAM; SSF53686; SSF53686; 1.
DR TIGRFAMs; TIGR00263; trpB; 1.
DR PROSITE; PS00168; TRP_SYNTHASE_BETA; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis; Aromatic amino acid biosynthesis; Lyase;
KW Pyridoxal phosphate; Tryptophan biosynthesis.
FT CHAIN 1..396
FT /note="Tryptophan synthase beta chain"
FT /id="PRO_1000018344"
FT MOD_RES 86
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000255|HAMAP-Rule:MF_00133"
SQ SEQUENCE 396 AA; 43107 MW; 281261027D192A1B CRC64;
MSKLNAYFGE YGGQFVPQIL VPALDQLEQE FIKAQADESF KQEFKELLQE YAGRPTALTK
TRNIVKNTRT KLYLKREDLL HGGAHKTNQV LGQALLVKRM GKKEIIAETG AGQHGVATAL
ACALLDLKCR VYMGAKDVER QSPNVFRMKL MGAEVIPVHS GSATLKDACN EALRDWSANY
SKAHYLLGTA AGPHPFPTIV REFQRMIGEE TKQQMLAKEG RLPDAVIACV GGGSNAIGMF
ADFIDEKNVK LIGVEPAGKG IETGEHGAPL KHGKTGIFFG MKAPLMQNSD GQIEESYSIS
AGLDFPSVGP QHAHLLAIGR AKYASATDDE ALDAFKLLCK KEGIIPALES SHALAHALKL
AYEDPNKEQL LVVNLSGRGD KDIFTVHDIL KEKGEI