SERC_DICDI
ID SERC_DICDI Reviewed; 374 AA.
AC Q55CQ6;
DT 08-APR-2008, integrated into UniProtKB/Swiss-Prot.
DT 24-MAY-2005, sequence version 1.
DT 03-AUG-2022, entry version 107.
DE RecName: Full=Probable phosphoserine aminotransferase;
DE Short=PSAT;
DE EC=2.6.1.52;
DE AltName: Full=Phosphohydroxythreonine aminotransferase;
GN Name=serC; ORFNames=DDB_G0269950;
OS Dictyostelium discoideum (Slime mold).
OC Eukaryota; Amoebozoa; Evosea; Eumycetozoa; Dictyostelia; Dictyosteliales;
OC Dictyosteliaceae; Dictyostelium.
OX NCBI_TaxID=44689;
RN [1]
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=AX4;
RX PubMed=15875012; DOI=10.1038/nature03481;
RA Eichinger L., Pachebat J.A., Gloeckner G., Rajandream M.A., Sucgang R.,
RA Berriman M., Song J., Olsen R., Szafranski K., Xu Q., Tunggal B.,
RA Kummerfeld S., Madera M., Konfortov B.A., Rivero F., Bankier A.T.,
RA Lehmann R., Hamlin N., Davies R., Gaudet P., Fey P., Pilcher K., Chen G.,
RA Saunders D., Sodergren E.J., Davis P., Kerhornou A., Nie X., Hall N.,
RA Anjard C., Hemphill L., Bason N., Farbrother P., Desany B., Just E.,
RA Morio T., Rost R., Churcher C.M., Cooper J., Haydock S., van Driessche N.,
RA Cronin A., Goodhead I., Muzny D.M., Mourier T., Pain A., Lu M., Harper D.,
RA Lindsay R., Hauser H., James K.D., Quiles M., Madan Babu M., Saito T.,
RA Buchrieser C., Wardroper A., Felder M., Thangavelu M., Johnson D.,
RA Knights A., Loulseged H., Mungall K.L., Oliver K., Price C., Quail M.A.,
RA Urushihara H., Hernandez J., Rabbinowitsch E., Steffen D., Sanders M.,
RA Ma J., Kohara Y., Sharp S., Simmonds M.N., Spiegler S., Tivey A.,
RA Sugano S., White B., Walker D., Woodward J.R., Winckler T., Tanaka Y.,
RA Shaulsky G., Schleicher M., Weinstock G.M., Rosenthal A., Cox E.C.,
RA Chisholm R.L., Gibbs R.A., Loomis W.F., Platzer M., Kay R.R.,
RA Williams J.G., Dear P.H., Noegel A.A., Barrell B.G., Kuspa A.;
RT "The genome of the social amoeba Dictyostelium discoideum.";
RL Nature 435:43-57(2005).
CC -!- FUNCTION: Catalyzes the reversible conversion of 3-
CC phosphohydroxypyruvate to phosphoserine and of 3-hydroxy-2-oxo-4-
CC phosphonooxybutanoate to phosphohydroxythreonine.
CC {ECO:0000250|UniProtKB:P10658}.
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 -!- 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;
CC -!- COFACTOR:
CC Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC Evidence={ECO:0000250};
CC Note=Binds 1 pyridoxal phosphate per subunit. {ECO:0000250};
CC -!- PATHWAY: Amino-acid biosynthesis; L-serine biosynthesis; L-serine from
CC 3-phospho-D-glycerate: step 2/3.
CC -!- PATHWAY: Cofactor biosynthesis; pyridoxine 5'-phosphate biosynthesis;
CC pyridoxine 5'-phosphate from D-erythrose 4-phosphate: step 3/5.
CC -!- SUBUNIT: Homodimer. {ECO:0000250}.
CC -!- SIMILARITY: Belongs to the class-V pyridoxal-phosphate-dependent
CC aminotransferase family. SerC subfamily. {ECO:0000305}.
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DR EMBL; AAFI02000005; EAL72325.1; -; Genomic_DNA.
DR RefSeq; XP_646425.1; XM_641333.1.
DR AlphaFoldDB; Q55CQ6; -.
DR SMR; Q55CQ6; -.
DR STRING; 44689.DDB0230053; -.
DR PaxDb; Q55CQ6; -.
DR EnsemblProtists; EAL72325; EAL72325; DDB_G0269950.
DR GeneID; 8617383; -.
DR KEGG; ddi:DDB_G0269950; -.
DR dictyBase; DDB_G0269950; serC.
DR eggNOG; KOG2790; Eukaryota.
DR HOGENOM; CLU_034866_0_2_1; -.
DR InParanoid; Q55CQ6; -.
DR OMA; GYRASMY; -.
DR PhylomeDB; Q55CQ6; -.
DR Reactome; R-DDI-977347; Serine biosynthesis.
DR UniPathway; UPA00135; UER00197.
DR UniPathway; UPA00244; UER00311.
DR PRO; PR:Q55CQ6; -.
DR Proteomes; UP000002195; Chromosome 1.
DR GO; GO:0005737; C:cytoplasm; IBA:GO_Central.
DR GO; GO:0004648; F:O-phospho-L-serine:2-oxoglutarate aminotransferase activity; ISS:dictyBase.
DR GO; GO:0030170; F:pyridoxal phosphate binding; IBA:GO_Central.
DR GO; GO:0006564; P:L-serine biosynthetic process; IBA:GO_Central.
DR GO; GO:0009070; P:serine family amino acid biosynthetic process; ISS:dictyBase.
DR Gene3D; 3.40.640.10; -; 1.
DR Gene3D; 3.90.1150.10; -; 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 PANTHER; PTHR43247; PTHR43247; 1.
DR Pfam; PF00266; Aminotran_5; 1.
DR PIRSF; PIRSF000525; SerC; 1.
DR SUPFAM; SSF53383; SSF53383; 1.
DR TIGRFAMs; TIGR01364; serC_1; 1.
DR PROSITE; PS00595; AA_TRANSFER_CLASS_5; 1.
PE 3: Inferred from homology;
KW Amino-acid biosynthesis; Aminotransferase; Pyridoxal phosphate;
KW Reference proteome; Serine biosynthesis; Transferase.
FT CHAIN 1..374
FT /note="Probable phosphoserine aminotransferase"
FT /id="PRO_0000327722"
FT BINDING 48
FT /ligand="L-glutamate"
FT /ligand_id="ChEBI:CHEBI:29985"
FT /evidence="ECO:0000250"
FT BINDING 82..83
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250"
FT BINDING 110
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250"
FT BINDING 160
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250"
FT BINDING 183
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250"
FT BINDING 206
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250"
FT BINDING 248..249
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000250"
FT MOD_RES 207
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000250"
SQ SEQUENCE 374 AA; 41992 MW; 2AD0067249179238 CRC64;
MTENINEFRV NNFGAGPGCI PTEVLLEAQK ELLNFQGCGK SIMEVSHRGK EFEGVINETK
SNLKKLLSIS DDYDILFLQG GASSLFAGIP MNLCENGVED IVDFIVTGSW SKQASNDGKY
FCKVNKVVDM EKEKFLTVTE PQSWKFSPDA KYVHYCDNET IHGIEMPIST PDHLPSNLIK
VCDMSSNFLS KPIDVNKFDL IFAGAQKNAG ISGITIVIIK KSLLLKTKPN VPSVFNFLKK
SQNNSLDNTP PTFNIYITGL ILKWIINKGG LSEIEKLNIA KAHALYEYID NSNSFYKCSI
DKNYRSRMNV VFRIQDGNTE LEEKFIKEAS KENITDIKGH RSVGGLRVSL YNAITIDQTL
ILINFMTNFH NNNK
