ID A0A0K0G063_STRVS Unreviewed; 486 AA.
AC A0A0K0G063;
DT 14-OCT-2015, integrated into UniProtKB/TrEMBL.
DT 14-OCT-2015, sequence version 1.
DT 08-NOV-2023, entry version 29.
DE RecName: Full=O-phosphoseryl-tRNA(Sec) selenium transferase {ECO:0000256|ARBA:ARBA00021963, ECO:0000256|PIRNR:PIRNR017689};
DE EC=2.9.1.2 {ECO:0000256|ARBA:ARBA00012464, ECO:0000256|PIRNR:PIRNR017689};
DE AltName: Full=Selenocysteine synthase {ECO:0000256|ARBA:ARBA00030669, ECO:0000256|PIRNR:PIRNR017689};
DE AltName: Full=Selenocysteinyl-tRNA(Sec) synthase {ECO:0000256|ARBA:ARBA00032048, ECO:0000256|PIRNR:PIRNR017689};
DE AltName: Full=Sep-tRNA:Sec-tRNA synthase {ECO:0000256|ARBA:ARBA00032693, ECO:0000256|PIRNR:PIRNR017689};
OS Strongyloides venezuelensis (Threadworm).
OC Eukaryota; Metazoa; Ecdysozoa; Nematoda; Chromadorea; Rhabditida;
OC Tylenchina; Panagrolaimomorpha; Strongyloidoidea; Strongyloididae;
OC Strongyloides.
OX NCBI_TaxID=75913 {ECO:0000313|Proteomes:UP000035680, ECO:0000313|WBParaSite:SVE_1809500.1};
RN [1] {ECO:0000313|Proteomes:UP000035680}
RP NUCLEOTIDE SEQUENCE.
RA Martin A.A, De Silva N.;
RL Submitted (JUL-2014) to the EMBL/GenBank/DDBJ databases.
RN [2] {ECO:0000313|WBParaSite:SVE_1809500.1}
RP IDENTIFICATION.
RG WormBaseParasite;
RL Submitted (AUG-2015) to UniProtKB.
CC -!- FUNCTION: Converts O-phosphoseryl-tRNA(Sec) to selenocysteinyl-
CC tRNA(Sec) required for selenoprotein biosynthesis.
CC {ECO:0000256|ARBA:ARBA00002552, ECO:0000256|PIRNR:PIRNR017689}.
CC -!- CATALYTIC ACTIVITY:
CC Reaction=H2O + O-phospho-L-seryl-tRNA(Sec) + selenophosphate = L-
CC selenocysteinyl-tRNA(Sec) + 2 phosphate; Xref=Rhea:RHEA:25041,
CC Rhea:RHEA-COMP:9743, Rhea:RHEA-COMP:9947, ChEBI:CHEBI:15377,
CC ChEBI:CHEBI:16144, ChEBI:CHEBI:43474, ChEBI:CHEBI:78551,
CC ChEBI:CHEBI:78573; EC=2.9.1.2;
CC Evidence={ECO:0000256|ARBA:ARBA00001746,
CC ECO:0000256|PIRNR:PIRNR017689};
CC -!- COFACTOR:
CC Name=pyridoxal 5'-phosphate; Xref=ChEBI:CHEBI:597326;
CC Evidence={ECO:0000256|ARBA:ARBA00001933,
CC ECO:0000256|PIRNR:PIRNR017689, ECO:0000256|PIRSR:PIRSR017689-50};
CC -!- PATHWAY: Aminoacyl-tRNA biosynthesis; selenocysteinyl-tRNA(Sec)
CC biosynthesis; selenocysteinyl-tRNA(Sec) from L-seryl-tRNA(Sec)
CC (archaeal/eukaryal route): step 2/2. {ECO:0000256|ARBA:ARBA00004822,
CC ECO:0000256|PIRNR:PIRNR017689}.
CC -!- SUBUNIT: Homotetramer formed by a catalytic dimer and a non-catalytic
CC dimer serving as a binding platform that orients tRNASec for catalysis.
CC Each tetramer binds the CCA ends of two tRNAs which point to the active
CC sites of the catalytic dimer. {ECO:0000256|ARBA:ARBA00026053}.
CC -!- SUBCELLULAR LOCATION: Cytoplasm {ECO:0000256|PIRNR:PIRNR017689}.
CC -!- SIMILARITY: Belongs to the SepSecS family.
CC {ECO:0000256|ARBA:ARBA00007037, ECO:0000256|PIRNR:PIRNR017689}.
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DR AlphaFoldDB; A0A0K0G063; -.
DR STRING; 75913.A0A0K0G063; -.
DR WBParaSite; SVE_1809500.1; SVE_1809500.1; SVE_1809500.
DR UniPathway; UPA00906; UER00898.
DR Proteomes; UP000035680; Unassembled WGS sequence.
DR GO; GO:0005737; C:cytoplasm; IEA:UniProtKB-SubCell.
DR GO; GO:0098621; F:O-phosphoseryl-tRNA(Sec) selenium transferase activity; IEA:UniProtKB-EC.
DR GO; GO:0000049; F:tRNA binding; IEA:UniProtKB-UniRule.
DR GO; GO:0001717; P:conversion of seryl-tRNAsec to selenocys-tRNAsec; IEA:UniProtKB-UniRule.
DR GO; GO:0006412; P:translation; IEA:UniProtKB-UniRule.
DR Gene3D; 3.40.640.10; Type I PLP-dependent aspartate aminotransferase-like (Major domain); 1.
DR InterPro; IPR015424; PyrdxlP-dep_Trfase.
DR InterPro; IPR015421; PyrdxlP-dep_Trfase_major.
DR InterPro; IPR019872; Sec-tRNA_Se_transferase.
DR InterPro; IPR008829; SepSecS/SepCysS.
DR NCBIfam; TIGR03531; selenium_SpcS; 1.
DR PANTHER; PTHR12944:SF2; O-PHOSPHOSERYL-TRNA(SEC) SELENIUM TRANSFERASE; 1.
DR PANTHER; PTHR12944; SOLUBLE LIVER ANTIGEN/LIVER PANCREAS ANTIGEN; 1.
DR Pfam; PF05889; SepSecS; 1.
DR PIRSF; PIRSF017689; SepSecS; 1.
DR SUPFAM; SSF53383; PLP-dependent transferases; 1.
PE 3: Inferred from homology;
KW Cytoplasm {ECO:0000256|PIRNR:PIRNR017689};
KW Protein biosynthesis {ECO:0000256|PIRNR:PIRNR017689};
KW Pyridoxal phosphate {ECO:0000256|PIRNR:PIRNR017689,
KW ECO:0000256|PIRSR:PIRSR017689-50};
KW Reference proteome {ECO:0000313|Proteomes:UP000035680};
KW RNA-binding {ECO:0000256|ARBA:ARBA00022884, ECO:0000256|PIRNR:PIRNR017689};
KW Selenium {ECO:0000256|PIRNR:PIRNR017689};
KW Transferase {ECO:0000256|PIRNR:PIRNR017689};
KW tRNA-binding {ECO:0000256|ARBA:ARBA00022555,
KW ECO:0000256|PIRNR:PIRNR017689}.
FT BINDING 69
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 91
FT /ligand="substrate"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 92
FT /ligand="substrate"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 99
FT /ligand="substrate"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 319
FT /ligand="substrate"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 407
FT /ligand="tRNA"
FT /ligand_id="ChEBI:CHEBI:17843"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT SITE 68
FT /note="May act as a substrate filter by repelling compounds
FT with a negatively charged alpha-carboxylate"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-50"
FT MOD_RES 290
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-50"
SQ SEQUENCE 486 AA; 54347 MW; 0B6EBBBF1B5BC1D7 CRC64;
MDFKFGKDQQ HYAELAERHL LNKFTDLLTK KKIPDDGWEE DLLVEFLNWL SRQDSNNQKR
YQCIGAGERE GRVICPLVRR LHFGMTHGIG RSGNILDSQP KAQGSTIINM LANAFALEAL
HIYGMKAAKG VLVVPLCTGA SISLSLSGLR NDFKEKYSNK DVPKYVVWMR SDQMSAPKAI
INAGFDVIVI EGVPENEDEL SYINSNIEEL RNVLSKYSGD VFCIVSCTQC FAPREPDDIV
EISRIAKENN IYHIVNNAYG VSVGSINEMF NKVSESNDCR IDSIVQSLDK NFQTPVGGSI
IATLKQSSII KFAKSYPGRA SAVPSRDFVI TILHQGAINL MNTTSQREKL YALLKDLLIN
RIASKYNEKV LTSNMLSEKG NGISMCMTLS SIKPENQTLL GSMLFHRGVT GSRVVPTTSI
SKVKSLPNYE LKNYFSHSKY ANHCGYINFA VSVGMKESEV YRLIDILDSV MNQLILKQVK
VKLEIN
//
