O-succinyl-L-homoserine + hydrogen sulfide <=> L-homocysteine + succinate
o-succinyl-l-homoserine + hydrogen sulfide <=> l-homocysteine + succinate
O-succinyl-L-homoserine + hydrogen sulfide <=> L-homocysteine + succinate
o-succinyl-l-homoserine + hydrogen sulfide <=> l-homocysteine + succinate