ID A4CP81_ROBBH Unreviewed; 397 AA.
AC A4CP81;
DT 03-APR-2007, integrated into UniProtKB/TrEMBL.
DT 03-APR-2007, sequence version 1.
DT 27-MAR-2024, entry version 95.
DE RecName: Full=Tryptophan synthase beta chain {ECO:0000256|HAMAP-Rule:MF_00133};
DE EC=4.2.1.20 {ECO:0000256|HAMAP-Rule:MF_00133};
GN Name=trpB {ECO:0000256|HAMAP-Rule:MF_00133};
GN OrderedLocusNames=RB2501_02220 {ECO:0000313|EMBL:EAR14202.1};
OS Robiginitalea biformata (strain ATCC BAA-864 / HTCC2501 / KCTC 12146).
OC Bacteria; Bacteroidota; Flavobacteriia; Flavobacteriales;
OC Flavobacteriaceae; Robiginitalea.
OX NCBI_TaxID=313596 {ECO:0000313|EMBL:EAR14202.1, ECO:0000313|Proteomes:UP000009049};
RN [1] {ECO:0000313|EMBL:EAR14202.1, ECO:0000313|Proteomes:UP000009049}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC BAA-864 / HTCC2501 / KCTC 12146
RC {ECO:0000313|Proteomes:UP000009049};
RX PubMed=19767438; DOI=10.1128/JB.01191-09;
RA Oh H.M., Giovannoni S.J., Lee K., Ferriera S., Johnson J., Cho J.C.;
RT "Complete genome sequence of Robiginitalea biformata HTCC2501.";
RL J. Bacteriol. 191:7144-7145(2009).
CC -!- FUNCTION: The beta subunit is responsible for the synthesis of L-
CC tryptophan from indole and L-serine. {ECO:0000256|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:0000256|ARBA:ARBA00000003, ECO:0000256|HAMAP-
CC Rule:MF_00133};
CC -!- COFACTOR:
CC Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC Evidence={ECO:0000256|ARBA:ARBA00001933,
CC ECO:0000256|HAMAP-Rule:MF_00133};
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_00133}.
CC -!- SUBUNIT: Tetramer of two alpha and two beta chains.
CC {ECO:0000256|ARBA:ARBA00011270, ECO:0000256|HAMAP-Rule:MF_00133}.
CC -!- SIMILARITY: Belongs to the TrpB family. {ECO:0000256|ARBA:ARBA00009982,
CC ECO:0000256|HAMAP-Rule:MF_00133}.
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DR EMBL; CP001712; EAR14202.1; -; Genomic_DNA.
DR RefSeq; WP_015755638.1; NC_013222.1.
DR AlphaFoldDB; A4CP81; -.
DR STRING; 313596.RB2501_02220; -.
DR KEGG; rbi:RB2501_02220; -.
DR eggNOG; COG0133; Bacteria.
DR HOGENOM; CLU_016734_3_1_10; -.
DR UniPathway; UPA00035; UER00044.
DR Proteomes; UP000009049; 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; IPR006653; Trp_synth_b_CS.
DR InterPro; IPR006654; Trp_synth_beta.
DR InterPro; IPR023026; Trp_synth_beta/beta-like.
DR InterPro; IPR001926; TrpB-like_PALP.
DR InterPro; IPR036052; TrpB-like_PALP_sf.
DR NCBIfam; TIGR00263; trpB; 1.
DR PANTHER; PTHR48077:SF3; TRYPTOPHAN SYNTHASE; 1.
DR PANTHER; PTHR48077; TRYPTOPHAN SYNTHASE-RELATED; 1.
DR Pfam; PF00291; PALP; 1.
DR PIRSF; PIRSF001413; Trp_syn_beta; 1.
DR SUPFAM; SSF53686; Tryptophan synthase beta subunit-like PLP-dependent enzymes; 1.
DR PROSITE; PS00168; TRP_SYNTHASE_BETA; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605, ECO:0000256|HAMAP-
KW Rule:MF_00133};
KW Aromatic amino acid biosynthesis {ECO:0000256|ARBA:ARBA00023141,
KW ECO:0000256|HAMAP-Rule:MF_00133};
KW Lyase {ECO:0000256|ARBA:ARBA00023239, ECO:0000256|HAMAP-Rule:MF_00133};
KW Pyridoxal phosphate {ECO:0000256|ARBA:ARBA00022898, ECO:0000256|HAMAP-
KW Rule:MF_00133}; Reference proteome {ECO:0000313|Proteomes:UP000009049};
KW Tryptophan biosynthesis {ECO:0000256|ARBA:ARBA00022822, ECO:0000256|HAMAP-
KW Rule:MF_00133}.
FT DOMAIN 59..381
FT /note="Tryptophan synthase beta chain-like PALP"
FT /evidence="ECO:0000259|Pfam:PF00291"
FT MOD_RES 92
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00133"
SQ SEQUENCE 397 AA; 43255 MW; 2F652426D28B7389 CRC64;
METSKYKVDA QGFYGEFGGA FIPEMLYPNV EELRENYLPI IESEEFQSEF RKLLRDYVGR
PTPLYLARRL SSTYKARIYL KREDLCHTGA HKVNNTIGQI LLAKKLGKKR IIAETGAGQH
GVATATVCAL MGLPCVVYMG EVDIARQAPN VARMKLLGAE VRPARSGSRT LKDATNEAIR
DWINNPVDTH YIIGSVVGPH PYPDMVTRLQ AVISEEIQSQ LQEAEGRPDP DYLIACVGGG
SNAAGTYYHY LDREHVRIIA AEAAGKGVET GESAATSALG RPGIIHASKT LLMQTDDGQI
TEPYSISAGL DYPGVGPLHA HLFQTGRARF IPVTDDQAME AGRELARLEG IIPAIETSHA
LAVLSQGAVP EGSLVVINLS GRGDKDLQTY IDHFKLA
//
