ID   TRPB_METKA              Reviewed;         398 AA.
AC   Q8TX91;
DT   19-OCT-2002, integrated into UniProtKB/Swiss-Prot.
DT   01-JUN-2002, sequence version 1.
DT   25-MAY-2022, entry version 110.
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=MK0784;
OS   Methanopyrus kandleri (strain AV19 / DSM 6324 / JCM 9639 / NBRC 100938).
OC   Archaea; Euryarchaeota; Methanopyri; Methanopyrales; Methanopyraceae;
OC   Methanopyrus.
OX   NCBI_TaxID=190192;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=AV19 / DSM 6324 / JCM 9639 / NBRC 100938;
RX   PubMed=11930014; DOI=10.1073/pnas.032671499;
RA   Slesarev A.I., Mezhevaya K.V., Makarova K.S., Polushin N.N.,
RA   Shcherbinina O.V., Shakhova V.V., Belova G.I., Aravind L., Natale D.A.,
RA   Rogozin I.B., Tatusov R.L., Wolf Y.I., Stetter K.O., Malykh A.G.,
RA   Koonin E.V., Kozyavkin S.A.;
RT   "The complete genome of hyperthermophile Methanopyrus kandleri AV19 and
RT   monophyly of archaeal methanogens.";
RL   Proc. Natl. Acad. Sci. U.S.A. 99:4644-4649(2002).
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; AE009439; AAM01998.1; -; Genomic_DNA.
DR   AlphaFoldDB; Q8TX91; -.
DR   SMR; Q8TX91; -.
DR   STRING; 190192.MK0784; -.
DR   EnsemblBacteria; AAM01998; AAM01998; MK0784.
DR   KEGG; mka:MK0784; -.
DR   PATRIC; fig|190192.8.peg.826; -.
DR   HOGENOM; CLU_016734_3_1_2; -.
DR   OMA; HGMKSYF; -.
DR   UniPathway; UPA00035; UER00044.
DR   Proteomes; UP000001826; 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; Reference proteome; Tryptophan biosynthesis.
FT   CHAIN           1..398
FT                   /note="Tryptophan synthase beta chain"
FT                   /id="PRO_0000099039"
FT   MOD_RES         89
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00133"
SQ   SEQUENCE   398 AA;  43756 MW;  476AD46D43C4876C CRC64;
     MDRYPDENGY FGEYGGRFVP ETLMPALEEL EDAFKEARED PEFWEELEEL WRKYAGRPTP
     LYYARNLSRK LGVKVYLKRE DLVHGGAHKL NNTLGQALLA DRMGKDRIIA ETGAGQHGLA
     TAMAGAALGK KVEIYMGAID VERQKHNVFR MELMGAKVHP VKAGTQTLKD AINEALRDWI
     TNLETTHYLL GSVVGPHPYP WIVREFQRVI GRETKEQITE LEGGLPDAIV ACTGGGSNSI
     GIFYDFLDDE EVALYAVEAG GKGLDTDEHS ASLCAGEVGV LHGCRTKVLQ DEHGQIRPTH
     SIAPGLDYPG VGPELAFLVD EGRVTADAVT DEEALRGFVM LNETEGILPA LESAHAVYYV
     KKLVERGELD RGDVVVVNLS GRGDKDVRIA AEELGVEI