L-seryl-tRNA(Sec) + selenophosphate + H(+) => L-selenocysteinyl-tRNA(Sec) + phosphate
l-seryl-trna(sec) + selenophosphate + h(+) => l-selenocysteinyl-trna(sec) + phosphate
L-seryl-tRNA(Sec) + selenophosphate + H(+) => L-selenocysteinyl-tRNA(Sec) + phosphate
l-seryl-trna(sec) + selenophosphate + h(+) => l-selenocysteinyl-trna(sec) + phosphate