ID   TRPB_CROS8              Reviewed;         397 AA.
AC   A7MMG1;
DT   15-JAN-2008, integrated into UniProtKB/Swiss-Prot.
DT   02-OCT-2007, sequence version 1.
DT   25-MAY-2022, entry version 82.
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=ESA_01559;
OS   Cronobacter sakazakii (strain ATCC BAA-894) (Enterobacter sakazakii).
OC   Bacteria; Proteobacteria; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Cronobacter.
OX   NCBI_TaxID=290339;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=ATCC BAA-894;
RX   PubMed=20221447; DOI=10.1371/journal.pone.0009556;
RA   Kucerova E., Clifton S.W., Xia X.Q., Long F., Porwollik S., Fulton L.,
RA   Fronick C., Minx P., Kyung K., Warren W., Fulton R., Feng D., Wollam A.,
RA   Shah N., Bhonagiri V., Nash W.E., Hallsworth-Pepin K., Wilson R.K.,
RA   McClelland M., Forsythe S.J.;
RT   "Genome sequence of Cronobacter sakazakii BAA-894 and comparative genomic
RT   hybridization analysis with other Cronobacter species.";
RL   PLoS ONE 5:E9556-E9556(2010).
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; CP000783; ABU76813.1; -; Genomic_DNA.
DR   RefSeq; WP_012124565.1; NC_009778.1.
DR   AlphaFoldDB; A7MMG1; -.
DR   SMR; A7MMG1; -.
DR   EnsemblBacteria; ABU76813; ABU76813; ESA_01559.
DR   KEGG; esa:ESA_01559; -.
DR   PATRIC; fig|290339.8.peg.1387; -.
DR   HOGENOM; CLU_016734_3_1_6; -.
DR   OMA; HGMKSYF; -.
DR   UniPathway; UPA00035; UER00044.
DR   Proteomes; UP000000260; 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..397
FT                   /note="Tryptophan synthase beta chain"
FT                   /id="PRO_1000018338"
FT   MOD_RES         87
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00133"
SQ   SEQUENCE   397 AA;  43016 MW;  E1AD9BD10EB3755C CRC64;
     MSTLLNPYFG EFGGMYVPQI LMPALRQLEE AFVSAQSDAE FQAQFTDLLK NYAGRPTALT
     KCQNLTEGTR TTLYLKREDL LHGGAHKTNQ VLGQALLAKR MGKTEIIAET GAGQHGVASA
     LASALLGLKC RIYMGAKDVE RQSPNVFRMK LMGAEVIPVY SGSATLKDAC NEALRDWSGS
     YDRAHYMLGT AAGPHPFPTI VREFQRMIGE ETRAQIMEKE GRLPDAVIAC VGGGSNAIGM
     FADFINETSV GLIGVEPAGH GIETGEHGAP LKHGRVGIYF GMKAPMMQTD DGQIEESYSI
     SAGLDFPSVG PQHAYLNSTG RAEYVSITDD EALEAFKTLC RQEGIIPALE SSHALAHALK
     MMRAAPEKEQ LLVVNLSGRG DKDIFTVHDI FKARGEM