ID Q3JCB8_NITOC Unreviewed; 394 AA.
AC Q3JCB8;
DT 08-NOV-2005, integrated into UniProtKB/TrEMBL.
DT 08-NOV-2005, sequence version 1.
DT 27-MAR-2024, entry version 113.
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=Noc_1020 {ECO:0000313|EMBL:ABA57528.1};
OS Nitrosococcus oceani (strain ATCC 19707 / BCRC 17464 / JCM 30415 / NCIMB
OS 11848 / C-107).
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Chromatiales; Chromatiaceae;
OC Nitrosococcus.
OX NCBI_TaxID=323261 {ECO:0000313|EMBL:ABA57528.1, ECO:0000313|Proteomes:UP000006838};
RN [1] {ECO:0000313|Proteomes:UP000006838}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=ATCC 19707 / BCRC 17464 / NCIMB 11848 / C-107
RC {ECO:0000313|Proteomes:UP000006838};
RX PubMed=16957257; DOI=10.1128/AEM.00463-06;
RA Klotz M.G., Arp D.J., Chain P.S.G., El-Sheikh A.F., Hauser L.J.,
RA Hommes N.G., Larimer F.W., Malfatti S.A., Norton J.M., Poret-Peterson A.T.,
RA Vergez L.M., Ward B.B.;
RT "Complete genome sequence of the marine, chemolithoautotrophic, ammonia-
RT oxidizing bacterium Nitrosococcus oceani ATCC 19707.";
RL Appl. Environ. Microbiol. 72:6299-6315(2006).
CC -!- FUNCTION: The beta subunit is responsible for the synthesis of L-
CC tryptophan from indole and L-serine. {ECO:0000256|ARBA:ARBA00002786,
CC 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; CP000127; ABA57528.1; -; Genomic_DNA.
DR RefSeq; WP_011330542.1; NC_007484.1.
DR AlphaFoldDB; Q3JCB8; -.
DR STRING; 323261.Noc_1020; -.
DR KEGG; noc:Noc_1020; -.
DR eggNOG; COG0133; Bacteria.
DR HOGENOM; CLU_016734_3_1_6; -.
DR InParanoid; Q3JCB8; -.
DR UniPathway; UPA00035; UER00044.
DR Proteomes; UP000006838; 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:UP000006838};
KW Tryptophan biosynthesis {ECO:0000256|ARBA:ARBA00022822, ECO:0000256|HAMAP-
KW Rule:MF_00133}.
FT DOMAIN 53..377
FT /note="Tryptophan synthase beta chain-like PALP"
FT /evidence="ECO:0000259|Pfam:PF00291"
FT MOD_RES 87
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000256|HAMAP-Rule:MF_00133"
SQ SEQUENCE 394 AA; 42355 MW; 90068CB12743F199 CRC64;
MPDEKGHFGP YGGRFVAETL MEPIEELRQA YARYRDDPDF QAELEADLAH YVGRPTPLYF
AKRWSEQLGG ARIFLKREDL SHTGAHKINN TVGQALLAKR MGKTRLIAET GAGQHGVATA
TVAARLGLEC VVYMGAEDIE RQAPNVYRMR LLGAEVVPVT SGSRTLKDAL NEAMRDWVTH
VDNTFYVIGT VAGPHPYPVM VRDFQAVIGR EARTQILEQL GALPQALVAC VGGGSNAIGL
FHSFCKDEQV ALYGVEAAGL GLESGQHAAS LCAGKPGVLH GNRTYLVENS HGQIIDTHSI
SAGLDYPGVG PEHAWLKDTG RATYVAISDE EALGAFHALT RIEGIIPALE SSHALAYATQ
LAPTLAPEQG IIVNLSGRGD KDINTVAKIE GISL
//
