ID   TRPB_FRATN              Reviewed;         396 AA.
AC   A0Q8M6;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   09-JAN-2007, sequence version 1.
DT   03-AUG-2022, entry version 91.
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=FTN_1739;
OS   Francisella tularensis subsp. novicida (strain U112).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Thiotrichales;
OC   Francisellaceae; Francisella.
OX   NCBI_TaxID=401614;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=U112;
RX   PubMed=17550600; DOI=10.1186/gb-2007-8-6-r102;
RA   Rohmer L., Fong C., Abmayr S., Wasnick M., Larson Freeman T.J., Radey M.,
RA   Guina T., Svensson K., Hayden H.S., Jacobs M., Gallagher L.A., Manoil C.,
RA   Ernst R.K., Drees B., Buckley D., Haugen E., Bovee D., Zhou Y., Chang J.,
RA   Levy R., Lim R., Gillett W., Guenthener D., Kang A., Shaffer S.A.,
RA   Taylor G., Chen J., Gallis B., D'Argenio D.A., Forsman M., Olson M.V.,
RA   Goodlett D.R., Kaul R., Miller S.I., Brittnacher M.J.;
RT   "Comparison of Francisella tularensis genomes reveals evolutionary events
RT   associated with the emergence of human pathogenic strains.";
RL   Genome Biol. 8:R102.1-R102.16(2007).
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; CP000439; ABK90591.1; -; Genomic_DNA.
DR   RefSeq; WP_003040724.1; NZ_CP009633.1.
DR   AlphaFoldDB; A0Q8M6; -.
DR   SMR; A0Q8M6; -.
DR   EnsemblBacteria; ABK90591; ABK90591; FTN_1739.
DR   KEGG; ftn:FTN_1739; -.
DR   OMA; HGMKSYF; -.
DR   OrthoDB; 912282at2; -.
DR   BioCyc; FTUL401614:G1G75-1801-MON; -.
DR   UniPathway; UPA00035; UER00044.
DR   Proteomes; UP000000762; Chromosome.
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_1000018343"
FT   MOD_RES         86
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00133"
SQ   SEQUENCE   396 AA;  43006 MW;  39608FAC06ABBCA0 CRC64;
     MSKLNAYFGE YGGQFVPQIL VPALDQLEQE FIKAQADESF KQEFKELLQE YAGRPTALTK
     TRNIVKNTKT TLYLKREDLL HGGAHKTNQV LGQALLAKRM GKKEIIAETG AGQHGVATAL
     ACALLDLKCR VYMGAKDVER QSPNVFRMKL MGAEVIPVHS GSATLKDACN EALRDWSANY
     SKAHYLLGTA AGPHPFPTIV REFQRMIGEE TKQQILAKEG RLPDAVIACV GGGSNAIGMF
     ADFIDEKNVK LIGVEPAGKG IETGEHGAPL KHGKTGIFFG MKAPLMQNSD GQIEESYSIS
     AGLDFPSVGP QHAHLLAIGR AEYASATDDE ALDAFKLLCK KEGIIPALES SHALAHALKL
     AYEDPNKEQL LVVNLSGRGD KDIFTVHDIL KEKGEI