ID   SERC_ECO8A              Reviewed;         362 AA.
AC   B7M835;
DT   22-SEP-2009, integrated into UniProtKB/Swiss-Prot.
DT   24-MAR-2009, sequence version 1.
DT   27-MAR-2024, entry version 80.
DE   RecName: Full=Phosphoserine aminotransferase {ECO:0000255|HAMAP-Rule:MF_00160};
DE            EC=2.6.1.52 {ECO:0000255|HAMAP-Rule:MF_00160};
DE   AltName: Full=Phosphohydroxythreonine aminotransferase {ECO:0000255|HAMAP-Rule:MF_00160};
DE            Short=PSAT {ECO:0000255|HAMAP-Rule:MF_00160};
GN   Name=serC {ECO:0000255|HAMAP-Rule:MF_00160};
GN   OrderedLocusNames=ECIAI1_0947;
OS   Escherichia coli O8 (strain IAI1).
OC   Bacteria; Pseudomonadota; Gammaproteobacteria; Enterobacterales;
OC   Enterobacteriaceae; Escherichia.
OX   NCBI_TaxID=585034;
RN   [1]
RP   NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC   STRAIN=IAI1;
RX   PubMed=19165319; DOI=10.1371/journal.pgen.1000344;
RA   Touchon M., Hoede C., Tenaillon O., Barbe V., Baeriswyl S., Bidet P.,
RA   Bingen E., Bonacorsi S., Bouchier C., Bouvet O., Calteau A., Chiapello H.,
RA   Clermont O., Cruveiller S., Danchin A., Diard M., Dossat C., Karoui M.E.,
RA   Frapy E., Garry L., Ghigo J.M., Gilles A.M., Johnson J., Le Bouguenec C.,
RA   Lescat M., Mangenot S., Martinez-Jehanne V., Matic I., Nassif X., Oztas S.,
RA   Petit M.A., Pichon C., Rouy Z., Ruf C.S., Schneider D., Tourret J.,
RA   Vacherie B., Vallenet D., Medigue C., Rocha E.P.C., Denamur E.;
RT   "Organised genome dynamics in the Escherichia coli species results in
RT   highly diverse adaptive paths.";
RL   PLoS Genet. 5:E1000344-E1000344(2009).
CC   -!- FUNCTION: Catalyzes the reversible conversion of 3-
CC       phosphohydroxypyruvate to phosphoserine and of 3-hydroxy-2-oxo-4-
CC       phosphonooxybutanoate to phosphohydroxythreonine. {ECO:0000255|HAMAP-
CC       Rule:MF_00160}.
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2-oxoglutarate + O-phospho-L-serine = 3-phosphooxypyruvate +
CC         L-glutamate; Xref=Rhea:RHEA:14329, ChEBI:CHEBI:16810,
CC         ChEBI:CHEBI:18110, ChEBI:CHEBI:29985, ChEBI:CHEBI:57524; EC=2.6.1.52;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00160};
CC   -!- CATALYTIC ACTIVITY:
CC       Reaction=2-oxoglutarate + 4-(phosphooxy)-L-threonine = (R)-3-hydroxy-2-
CC         oxo-4-phosphooxybutanoate + L-glutamate; Xref=Rhea:RHEA:16573,
CC         ChEBI:CHEBI:16810, ChEBI:CHEBI:29985, ChEBI:CHEBI:58452,
CC         ChEBI:CHEBI:58538; EC=2.6.1.52; Evidence={ECO:0000255|HAMAP-
CC         Rule:MF_00160};
CC   -!- COFACTOR:
CC       Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC         Evidence={ECO:0000255|HAMAP-Rule:MF_00160};
CC       Note=Binds 1 pyridoxal phosphate per subunit. {ECO:0000255|HAMAP-
CC       Rule:MF_00160};
CC   -!- PATHWAY: Amino-acid biosynthesis; L-serine biosynthesis; L-serine from
CC       3-phospho-D-glycerate: step 2/3. {ECO:0000255|HAMAP-Rule:MF_00160}.
CC   -!- PATHWAY: Cofactor biosynthesis; pyridoxine 5'-phosphate biosynthesis;
CC       pyridoxine 5'-phosphate from D-erythrose 4-phosphate: step 3/5.
CC       {ECO:0000255|HAMAP-Rule:MF_00160}.
CC   -!- SUBUNIT: Homodimer. {ECO:0000255|HAMAP-Rule:MF_00160}.
CC   -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000255|HAMAP-Rule:MF_00160}.
CC   -!- SIMILARITY: Belongs to the class-V pyridoxal-phosphate-dependent
CC       aminotransferase family. SerC subfamily. {ECO:0000255|HAMAP-
CC       Rule:MF_00160}.
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DR   EMBL; CU928160; CAQ97811.1; -; Genomic_DNA.
DR   RefSeq; WP_000057149.1; NC_011741.1.
DR   AlphaFoldDB; B7M835; -.
DR   SMR; B7M835; -.
DR   GeneID; 75205309; -.
DR   KEGG; ecr:ECIAI1_0947; -.
DR   HOGENOM; CLU_034866_0_2_6; -.
DR   UniPathway; UPA00135; UER00197.
DR   UniPathway; UPA00244; UER00311.
DR   GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR   GO; GO:0004648; F:O-phospho-L-serine:2-oxoglutarate aminotransferase activity; IEA:UniProtKB-UniRule.
DR   GO; GO:0030170; F:pyridoxal phosphate binding; IEA:UniProtKB-UniRule.
DR   GO; GO:0006564; P:L-serine biosynthetic process; IEA:UniProtKB-UniRule.
DR   GO; GO:0008615; P:pyridoxine biosynthetic process; IEA:UniProtKB-UniRule.
DR   CDD; cd00611; PSAT_like; 1.
DR   Gene3D; 3.90.1150.10; Aspartate Aminotransferase, domain 1; 1.
DR   Gene3D; 3.40.640.10; Type I PLP-dependent aspartate aminotransferase-like (Major domain); 1.
DR   HAMAP; MF_00160; SerC_aminotrans_5; 1.
DR   InterPro; IPR000192; Aminotrans_V_dom.
DR   InterPro; IPR020578; Aminotrans_V_PyrdxlP_BS.
DR   InterPro; IPR022278; Pser_aminoTfrase.
DR   InterPro; IPR015424; PyrdxlP-dep_Trfase.
DR   InterPro; IPR015421; PyrdxlP-dep_Trfase_major.
DR   InterPro; IPR015422; PyrdxlP-dep_Trfase_small.
DR   NCBIfam; TIGR01364; serC_1; 1.
DR   PANTHER; PTHR43247; PHOSPHOSERINE AMINOTRANSFERASE; 1.
DR   PANTHER; PTHR43247:SF1; PHOSPHOSERINE AMINOTRANSFERASE; 1.
DR   Pfam; PF00266; Aminotran_5; 1.
DR   PIRSF; PIRSF000525; SerC; 1.
DR   SUPFAM; SSF53383; PLP-dependent transferases; 1.
DR   PROSITE; PS00595; AA_TRANSFER_CLASS_5; 1.
PE   3: Inferred from homology;
KW   Amino-acid biosynthesis; Aminotransferase; Cytoplasm; Pyridoxal phosphate;
KW   Pyridoxine biosynthesis; Serine biosynthesis; Transferase.
FT   CHAIN           1..362
FT                   /note="Phosphoserine aminotransferase"
FT                   /id="PRO_1000203525"
FT   BINDING         9
FT                   /ligand="L-glutamate"
FT                   /ligand_id="ChEBI:CHEBI:29985"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00160"
FT   BINDING         42
FT                   /ligand="L-glutamate"
FT                   /ligand_id="ChEBI:CHEBI:29985"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00160"
FT   BINDING         76..77
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00160"
FT   BINDING         102
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00160"
FT   BINDING         153
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00160"
FT   BINDING         174
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00160"
FT   BINDING         197
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00160"
FT   BINDING         239..240
FT                   /ligand="pyridoxal 5'-phosphate"
FT                   /ligand_id="ChEBI:CHEBI:597326"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00160"
FT   MOD_RES         198
FT                   /note="N6-(pyridoxal phosphate)lysine"
FT                   /evidence="ECO:0000255|HAMAP-Rule:MF_00160"
SQ   SEQUENCE   362 AA;  39840 MW;  9167841BD344616D CRC64;
     MAQIFNFSSG PAMLPAEVLK QAQQELRDWN GLGTSVMEVS HRGKEFIQVA EEAEKDFRDL
     LNVPSNYKVL FCHGGGRGQF AAVPLNILGD KTTADYVDAG YWAASAIKEA KKYCTPNVFD
     AKVTVDGLRA VKPMREWQLS DNAAYMHYCP NETIDGIAID ETPDFGKDVV VAADFSSTIL
     SRPIDVSRYG VIYAGAQKNI GPAGLTIVIV REDLLGKANI ACPSILDYSI LNDNGSMFNT
     PPTFAWYLSG LVFKWLKANG GVAEMDKINQ QKAELLYGVI DNSDFYRNDV AKANRSRMNV
     PFQLADSALD KLFLEESFAA GLHALKGHRV VGGMRASIYN AMPLEGVKAL TDFMVEFERR
     HG
//