ID A4BS55_9GAMM Unreviewed; 379 AA.
AC A4BS55;
DT 03-APR-2007, integrated into UniProtKB/TrEMBL.
DT 03-APR-2007, sequence version 1.
DT 24-JAN-2024, entry version 71.
DE RecName: Full=Threonine synthase {ECO:0000256|ARBA:ARBA00018679, ECO:0000256|PIRNR:PIRNR038945};
DE EC=4.2.3.1 {ECO:0000256|ARBA:ARBA00013028, ECO:0000256|PIRNR:PIRNR038945};
GN ORFNames=NB231_01449 {ECO:0000313|EMBL:EAR21534.1};
OS Nitrococcus mobilis Nb-231.
OC Bacteria; Pseudomonadota; Gammaproteobacteria; Chromatiales;
OC Ectothiorhodospiraceae; Nitrococcus.
OX NCBI_TaxID=314278 {ECO:0000313|EMBL:EAR21534.1, ECO:0000313|Proteomes:UP000003374};
RN [1] {ECO:0000313|EMBL:EAR21534.1, ECO:0000313|Proteomes:UP000003374}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=Nb-231 {ECO:0000313|EMBL:EAR21534.1,
RC ECO:0000313|Proteomes:UP000003374};
RA Waterbury J., Ferriera S., Johnson J., Kravitz S., Halpern A.,
RA Remington K., Beeson K., Tran B., Rogers Y.-H., Friedman R., Venter J.C.;
RL Submitted (FEB-2006) to the EMBL/GenBank/DDBJ databases.
CC -!- FUNCTION: Catalyzes the gamma-elimination of phosphate from L-
CC phosphohomoserine and the beta-addition of water to produce L-
CC threonine. {ECO:0000256|ARBA:ARBA00003648,
CC ECO:0000256|PIRNR:PIRNR038945}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + O-phospho-L-homoserine = L-threonine + phosphate;
CC Xref=Rhea:RHEA:10840, ChEBI:CHEBI:15377, ChEBI:CHEBI:43474,
CC ChEBI:CHEBI:57590, ChEBI:CHEBI:57926; EC=4.2.3.1;
CC Evidence={ECO:0000256|ARBA:ARBA00000051,
CC ECO:0000256|PIRNR:PIRNR038945};
CC -!- COFACTOR:
CC Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC Evidence={ECO:0000256|ARBA:ARBA00001933,
CC ECO:0000256|PIRNR:PIRNR038945, ECO:0000256|PIRSR:PIRSR038945-1};
CC -!- PATHWAY: Amino-acid biosynthesis; L-threonine biosynthesis; L-threonine
CC from L-aspartate: step 5/5. {ECO:0000256|ARBA:ARBA00004979,
CC ECO:0000256|PIRNR:PIRNR038945}.
CC -!- PATHWAY: Amino-acid degradation. {ECO:0000256|ARBA:ARBA00005023}.
CC -!- SIMILARITY: Belongs to the threonine synthase family.
CC {ECO:0000256|ARBA:ARBA00005517, ECO:0000256|PIRNR:PIRNR038945}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:EAR21534.1}.
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DR EMBL; AAOF01000008; EAR21534.1; -; Genomic_DNA.
DR RefSeq; WP_004999162.1; NZ_CH672427.1.
DR AlphaFoldDB; A4BS55; -.
DR STRING; 314278.NB231_01449; -.
DR eggNOG; COG0498; Bacteria.
DR HOGENOM; CLU_028142_0_0_6; -.
DR OrthoDB; 9778118at2; -.
DR UniPathway; UPA00050; UER00065.
DR Proteomes; UP000003374; Unassembled WGS sequence.
DR GO; GO:0030170; F:pyridoxal phosphate binding; IEA:InterPro.
DR GO; GO:0004795; F:threonine synthase activity; IEA:UniProtKB-EC.
DR GO; GO:0009088; P:threonine biosynthetic process; IEA:UniProtKB-UniPathway.
DR CDD; cd01563; Thr-synth_1; 1.
DR Gene3D; 3.40.50.1100; -; 2.
DR InterPro; IPR000634; Ser/Thr_deHydtase_PyrdxlP-BS.
DR InterPro; IPR004450; Thr_synthase-like.
DR InterPro; IPR026260; Thr_Synthase_bac/arc.
DR InterPro; IPR001926; TrpB-like_PALP.
DR InterPro; IPR036052; TrpB-like_PALP_sf.
DR NCBIfam; TIGR00260; thrC; 1.
DR PANTHER; PTHR48078:SF6; ACT DOMAIN-CONTAINING PROTEIN; 1.
DR PANTHER; PTHR48078; THREONINE DEHYDRATASE, MITOCHONDRIAL-RELATED; 1.
DR Pfam; PF00291; PALP; 1.
DR PIRSF; PIRSF038945; Thr_synthase; 1.
DR SUPFAM; SSF53686; Tryptophan synthase beta subunit-like PLP-dependent enzymes; 1.
DR PROSITE; PS00165; DEHYDRATASE_SER_THR; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis {ECO:0000256|ARBA:ARBA00022605,
KW ECO:0000256|PIRNR:PIRNR038945}; Lyase {ECO:0000256|PIRNR:PIRNR038945};
KW Pyridoxal phosphate {ECO:0000256|ARBA:ARBA00022898,
KW ECO:0000256|PIRNR:PIRNR038945};
KW Reference proteome {ECO:0000313|Proteomes:UP000003374};
KW Threonine biosynthesis {ECO:0000256|ARBA:ARBA00022697,
KW ECO:0000256|PIRNR:PIRNR038945}.
FT DOMAIN 27..343
FT /note="Tryptophan synthase beta chain-like PALP"
FT /evidence="ECO:0000259|Pfam:PF00291"
FT BINDING 92
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-1"
FT BINDING 192..196
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-1"
FT BINDING 342
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-1"
FT MOD_RES 66
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-2"
SQ SEQUENCE 379 AA; 40796 MW; A922CE1F1A6FBF1F CRC64;
MPFRSRYTGL IAKYHDRLPL ADDVRVISLG EGNTPLIRLC NLPRQLARGV DIYVKYEGLN
PTGSFKDRGM TVAVTQAVAE GCRAIVCAST GNTSASAAAY AARCGMRVFV LIPEGKIAIG
KLAQAIIHGA EVLQVRGNFD AGMRIVRELA EEGPITLVNS INPYRLQGQK TAAFEIVEEL
ERVPEFHCLP VGNAGNITAH WIGYSELALG HNDPGTQACS FCAGRCRFTC AMVRERPRMI
GYQAAGAAPF LRAQMIDDPE TVATAIRIGH PQSWEQAWAA SRESGGWFAE LTDQEILAAQ
RLLAEQEGVF CEPASAASVA GCLRDIQTGK IPEGSTVVCT LTGHGLKDPD IASRDASAAM
RTLEADVDVV KRVILDKLS
//
