ID   2.9.1.2
DE   O-phospho-L-seryl-tRNA(Sec):L-selenocysteinyl-tRNA synthase.
AN   O-phosphoseryl-tRNA:selenocysteinyl-tRNA synthase.
AN   O-phosphoseryl-tRNA(Sec) selenium transferase.
AN   SepSecS.
CA   H2O + O-phospho-L-seryl-tRNA(Sec) + selenophosphate = L-selenocysteinyl-
CA   tRNA(Sec) + 2 phosphate.
CC   -!- In archaea and eukarya selenocysteine formation is achieved by a two-
CC       step process: EC 2.7.1.164 phosphorylates the endogenous L-seryl-
CC       tRNA(Sec) to O-phospho-L-seryl-tRNA(Sec), and then this misacylated
CC       amino acid-tRNA species is converted to L-selenocysteinyl-tRNA(Sec)
CC       by Sep-tRNA:Sec-tRNA synthase.
CC   -!- Formerly EC 2.9.1.n1.
DR   Q61JN8, SPCS_CAEBR ;  Q18953, SPCS_CAEEL ;  Q803A7, SPCS_DANRE ;
DR   Q54VQ6, SPCS_DICDI ;  Q9HD40, SPCS_HUMAN ;  A0A3S7WQS5, SPCS_LEIDO ;
DR   Q58027, SPCS_METJA ;  Q8TXK0, SPCS_METKA ;  Q6LZM9, SPCS_METMP ;
DR   Q6P6M7, SPCS_MOUSE ;  Q5RAK7, SPCS_PONAB ;  Q28EN2, SPCS_XENTR ;
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