ID A0A151P9Q7_ALLMI Unreviewed; 492 AA.
AC A0A151P9Q7;
DT 08-JUN-2016, integrated into UniProtKB/TrEMBL.
DT 08-JUN-2016, sequence version 1.
DT 24-JAN-2024, entry version 33.
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};
GN Name=SEPSECS {ECO:0000313|EMBL:KYO45831.1};
GN ORFNames=Y1Q_0021469 {ECO:0000313|EMBL:KYO45831.1};
OS Alligator mississippiensis (American alligator).
OC Eukaryota; Metazoa; Chordata; Craniata; Vertebrata; Euteleostomi;
OC Archelosauria; Archosauria; Crocodylia; Alligatoridae; Alligatorinae;
OC Alligator.
OX NCBI_TaxID=8496 {ECO:0000313|EMBL:KYO45831.1};
RN [1] {ECO:0000313|EMBL:KYO45831.1, ECO:0000313|Proteomes:UP000050525}
RP NUCLEOTIDE SEQUENCE [LARGE SCALE GENOMIC DNA].
RC STRAIN=KSC_2009_1 {ECO:0000313|EMBL:KYO45831.1};
RX PubMed=22293439; DOI=10.1186/gb-2012-13-1-415;
RA St John J.A., Braun E.L., Isberg S.R., Miles L.G., Chong A.Y., Gongora J.,
RA Dalzell P., Moran C., Bed'hom B., Abzhanov A., Burgess S.C., Cooksey A.M.,
RA Castoe T.A., Crawford N.G., Densmore L.D., Drew J.C., Edwards S.V.,
RA Faircloth B.C., Fujita M.K., Greenwold M.J., Hoffmann F.G., Howard J.M.,
RA Iguchi T., Janes D.E., Khan S.Y., Kohno S., de Koning A.J., Lance S.L.,
RA McCarthy F.M., McCormack J.E., Merchant M.E., Peterson D.G., Pollock D.D.,
RA Pourmand N., Raney B.J., Roessler K.A., Sanford J.R., Sawyer R.H.,
RA Schmidt C.J., Triplett E.W., Tuberville T.D., Venegas-Anaya M.,
RA Howard J.T., Jarvis E.D., Guillette L.J.Jr., Glenn T.C., Green R.E.,
RA Ray D.A.;
RT "Sequencing three crocodilian genomes to illuminate the evolution of
RT archosaurs and amniotes.";
RL Genome Biol. 13:415-415(2012).
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}.
CC -!- CAUTION: The sequence shown here is derived from an EMBL/GenBank/DDBJ
CC whole genome shotgun (WGS) entry which is preliminary data.
CC {ECO:0000313|EMBL:KYO45831.1}.
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DR EMBL; AKHW03000533; KYO45831.1; -; Genomic_DNA.
DR RefSeq; XP_014463247.2; XM_014607761.2.
DR AlphaFoldDB; A0A151P9Q7; -.
DR STRING; 8496.A0A151P9Q7; -.
DR GeneID; 102573860; -.
DR KEGG; amj:102573860; -.
DR CTD; 51091; -.
DR eggNOG; KOG3843; Eukaryota.
DR OrthoDB; 121300at2759; -.
DR PhylomeDB; A0A151P9Q7; -.
DR UniPathway; UPA00906; UER00898.
DR Proteomes; UP000050525; 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:UP000050525};
KW RNA-binding {ECO:0000256|ARBA:ARBA00022884, ECO:0000256|PIRNR:PIRNR017689};
KW Selenium {ECO:0000256|PIRNR:PIRNR017689};
KW Transferase {ECO:0000256|PIRNR:PIRNR017689, ECO:0000313|EMBL:KYO45831.1};
KW tRNA-binding {ECO:0000256|ARBA:ARBA00022555,
KW ECO:0000256|PIRNR:PIRNR017689}.
FT REGION 465..492
FT /note="Disordered"
FT /evidence="ECO:0000256|SAM:MobiDB-lite"
FT BINDING 75
FT /ligand="pyridoxal 5'-phosphate"
FT /ligand_id="ChEBI:CHEBI:597326"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 97
FT /ligand="substrate"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 98
FT /ligand="substrate"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 105
FT /ligand="substrate"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 271
FT /ligand="tRNA"
FT /ligand_id="ChEBI:CHEBI:17843"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 313
FT /ligand="substrate"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 398
FT /ligand="tRNA"
FT /ligand_id="ChEBI:CHEBI:17843"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT BINDING 463
FT /ligand="tRNA"
FT /ligand_id="ChEBI:CHEBI:17843"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-1"
FT SITE 74
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 284
FT /note="N6-(pyridoxal phosphate)lysine"
FT /evidence="ECO:0000256|PIRSR:PIRSR017689-50"
SQ SEQUENCE 492 AA; 54481 MW; E595569ED3E70BA8 CRC64;
MNGENFGASE RLVAAAYVRQ GAQGRRAHEL RLRALLEQGK CPEDGWDEST IELFLHELAI
MDSNNFLGNC GVGEREGRVA SGLVARRHYR LIHGIGRSGD ISAVQPKAAG SSLLNKLTNL
IVLDIIKLAG VRTVTSCFVV PMATGMSLTL CFLTLRHKRP KAKYIIWPRI DQKSCFKSMI
TAGFEPVVIE NILENDELRT DLQGVEAKIQ ELGAENVLCV HSTTSCFAPR VPDRLEELAV
ICANYDIPHI VNNAYGVQSS KCMHLIQQGA RVGRIDAFIQ SLDKNFMVPV GGAIIAGFND
SFIKEISKMY PGRASASPSL DVFITLLSLG ANGYRQLLKQ RKEMFSYLTS ELKKLAEIHN
ERLLDTPHNP ISLAMSLKNL DEHSDTAVTQ LGSMLFTRQV SGARVVPRNF QQTVNNYTFK
GFMSHANNYP CAYLNAASAI GMKKQDVDMF LKRLNKCLKT FGKETNKGKD VSKTNDCHAD
LVEGEPEEPN KM
//
