O-succinyl-L-serine + hydrogen sulfide <=> L-cysteine + succinate
o-succinyl-l-serine + hydrogen sulfide <=> l-cysteine + succinate
O-succinyl-L-serine + hydrogen sulfide <=> L-cysteine + succinate
o-succinyl-l-serine + hydrogen sulfide <=> l-cysteine + succinate