O-phospho-L-seryl-tRNA(Cys) + hydrogen sulfide + H(+) <=> L-cysteinyl-tRNA(Cys) + phosphate
o-phospho-l-seryl-trna(cys) + hydrogen sulfide + h(+) <=> l-cysteinyl-trna(cys) + phosphate
O-phospho-L-seryl-tRNA(Cys) + hydrogen sulfide + H(+) <=> L-cysteinyl-tRNA(Cys) + phosphate
o-phospho-l-seryl-trna(cys) + hydrogen sulfide + h(+) <=> l-cysteinyl-trna(cys) + phosphate