ID Q46AV9_METBF Unreviewed; 405 AA.
AC Q46AV9;
DT 13-SEP-2005, integrated into UniProtKB/TrEMBL.
DT 13-SEP-2005, sequence version 1.
DT 27-MAR-2024, entry version 111.
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 OrderedLocusNames=Mbar_A2049 {ECO:0000313|EMBL:AAZ70983.1};
OS Methanosarcina barkeri (strain Fusaro / DSM 804).
OC Archaea; Euryarchaeota; Stenosarchaea group; Methanomicrobia;
OC Methanosarcinales; Methanosarcinaceae; Methanosarcina.
OX NCBI_TaxID=269797 {ECO:0000313|EMBL:AAZ70983.1};
RN [1] {ECO:0000313|EMBL:AAZ70983.1}
RP NUCLEOTIDE SEQUENCE.
RC STRAIN=Fusaro {ECO:0000313|EMBL:AAZ70983.1};
RA Copeland A., Lucas S., Lapidus A., Barry K., Detter J.C., Glavina T.,
RA Hammon N., Israni S., Pitluck S., Goodwin L.A., Saunders E.H., Schmutz J.,
RA Larimer F., Land M., Anderson I., Richardson P.;
RT "Complete sequence of chromosome 1 of Methanosarcina barkeri str. fusaro.";
RL Submitted (JUN-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|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 -!- SIMILARITY: Belongs to the threonine synthase family.
CC {ECO:0000256|ARBA:ARBA00005517, ECO:0000256|PIRNR:PIRNR038945}.
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DR EMBL; CP000099; AAZ70983.1; -; Genomic_DNA.
DR AlphaFoldDB; Q46AV9; -.
DR STRING; 269797.Mbar_A2049; -.
DR PaxDb; 269797-Mbar_A2049; -.
DR KEGG; mba:Mbar_A2049; -.
DR eggNOG; arCOG01434; Archaea.
DR HOGENOM; CLU_028142_4_1_2; -.
DR OrthoDB; 6371at2157; -.
DR UniPathway; UPA00050; UER00065.
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};
KW Lyase {ECO:0000256|PIRNR:PIRNR038945, ECO:0000313|EMBL:AAZ70983.1};
KW Pyridoxal phosphate {ECO:0000256|ARBA:ARBA00022898,
KW ECO:0000256|PIRNR:PIRNR038945};
KW Threonine biosynthesis {ECO:0000256|ARBA:ARBA00022697,
KW ECO:0000256|PIRNR:PIRNR038945}.
FT DOMAIN 67..370
FT /note="Tryptophan synthase beta chain-like PALP"
FT /evidence="ECO:0000259|Pfam:PF00291"
FT BINDING 130
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-1"
FT BINDING 231..235
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-1"
FT BINDING 369
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-1"
FT MOD_RES 104
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000256|PIRSR:PIRSR038945-2"
SQ SEQUENCE 405 AA; 43352 MW; 0CFE9DBDCDC1ECB7 CRC64;
MYHLKCIECG AEYSKDEVIY TCSKCDGLLD VIYDYSSVKI DMEKLKTECP SVWKYAKLLP
IEREPVTIQE GGTPLYKCNR LAEKIGIKEL YVKHEGMNPT GSFKDRGMTV GVTKALELGM
NTVACASTGN TSAALAIYGA KAGIPVIVLL PAGKVALGKV AQALMHGAKV LSIRGNFDDA
LALVRTLCSQ EKIYLLNSIN PYRLEGQKTI GFEIADQLGF KVPDRVVLPV GNAGNITAIW
KGFREFKKLG ITDSLPKMTG IQAAGSCPIV TAIKSEAPEI TPEEKPETVA TAIRIGNPVN
AKKALAAIRE SGGTAESVTD EEILTAQKDL ARLEGIGVEP ASAASVAGLK KLVDMGVISR
DETVVCITTG HLLKDPQTVI DICEKPIVVD ASIEAIREAI FGKAE
//
