L-seryl-tRNA(Ser) + AMP + diphosphate + H(+) => tRNA(Ser) + L-serine + ATP
l-seryl-trna(ser) + amp + diphosphate + h(+) => trna(ser) + l-serine + atp
L-seryl-tRNA(Ser) + AMP + diphosphate + H(+) => tRNA(Ser) + L-serine + ATP
l-seryl-trna(ser) + amp + diphosphate + h(+) => trna(ser) + l-serine + atp