ID D7CG08_STRBB Unreviewed; 371 AA.
AC D7CG08;
DT 10-AUG-2010, integrated into UniProtKB/TrEMBL.
DT 10-AUG-2010, sequence version 1.
DT 27-MAR-2024, entry version 66.
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 Name=thrC2 {ECO:0000313|EMBL:ADI06916.1};
GN OrderedLocusNames=SBI_03795 {ECO:0000313|EMBL:ADI06916.1};
OS Streptomyces bingchenggensis (strain BCW-1).
OC Bacteria; Actinomycetota; Actinomycetes; Kitasatosporales;
OC Streptomycetaceae; Streptomyces.
OX NCBI_TaxID=749414 {ECO:0000313|EMBL:ADI06916.1, ECO:0000313|Proteomes:UP000000377};
RN [1] {ECO:0000313|EMBL:ADI06916.1, ECO:0000313|Proteomes:UP000000377}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=BCW-1 {ECO:0000313|EMBL:ADI06916.1,
RC ECO:0000313|Proteomes:UP000000377};
RX PubMed=20581206; DOI=10.1128/JB.00596-10;
RA Wang X.J., Yan Y.J., Zhang B., An J., Wang J.J., Tian J., Jiang L.,
RA Chen Y.H., Huang S.X., Yin M., Zhang J., Gao A.L., Liu C.X., Zhu Z.X.,
RA Xiang W.S.;
RT "Genome sequence of the milbemycin-producing bacterium Streptomyces
RT bingchenggensis.";
RL J. Bacteriol. 192:4526-4527(2010).
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 -!- SUBUNIT: Homodimer. {ECO:0000256|ARBA:ARBA00011738}.
CC -!- SIMILARITY: Belongs to the threonine synthase family.
CC {ECO:0000256|ARBA:ARBA00005517, ECO:0000256|PIRNR:PIRNR038945}.
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DR EMBL; CP002047; ADI06916.1; -; Genomic_DNA.
DR AlphaFoldDB; D7CG08; -.
DR STRING; 749414.SBI_03795; -.
DR KEGG; sbh:SBI_03795; -.
DR PATRIC; fig|749414.3.peg.3934; -.
DR eggNOG; COG0498; Bacteria.
DR HOGENOM; CLU_028142_0_0_11; -.
DR UniPathway; UPA00050; UER00065.
DR Proteomes; UP000000377; Chromosome.
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; PTHR10314; CYSTATHIONINE BETA-SYNTHASE; 1.
DR PANTHER; PTHR10314:SF5; THREONINE SYNTHASE 2, CHLOROPLASTIC; 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};
KW Lyase {ECO:0000256|PIRNR:PIRNR038945, ECO:0000313|EMBL:ADI06916.1};
KW Pyridoxal phosphate {ECO:0000256|ARBA:ARBA00022898,
KW ECO:0000256|PIRNR:PIRNR038945};
KW Reference proteome {ECO:0000313|Proteomes:UP000000377};
KW Threonine biosynthesis {ECO:0000256|ARBA:ARBA00022697,
KW ECO:0000256|PIRNR:PIRNR038945}.
FT DOMAIN 40..338
FT /note="Tryptophan synthase beta chain-like PALP"
FT /evidence="ECO:0000259|Pfam:PF00291"
FT BINDING 103
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-1"
FT BINDING 203..207
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-1"
FT BINDING 337
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-1"
FT MOD_RES 77
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-2"
SQ SEQUENCE 371 AA; 38657 MW; 711CC4A1B06B198B CRC64;
MNTIADAGPA MSGTRRWQGW RGIIEEYRDR LPVSETTPVV TLREGGTPLV PAQVLSERTG
CEVHLKVEGA NPTGSFKDRG MTMAISMAKE AGAQAVICAS TGNTSASAAA YAVRAGMVCA
VLVPQGKIAL GKMGQALVHG SKILQVDGNF DDCLELARGL SEKYPVALVN SVNPARIEGQ
KTASFEIVDM LGDAPDIHVL PVGNAGNITA YWKGYKEYAT DGPLGAPASR TPRMWGFQAS
GAAPIVRGEP VRNPSTIATA IRIGNPASWA FAEQARDESG GLIDEVTDRQ ILAAYRLLAS
QEGVFVEPAS AASVAGLLKA AEQGLVDPGQ RIVCTVTGNG LKDPDWAVAG APQPVTVPVD
ADTAAERLGL A
//
