2 L-cysteine <=> L-lanthionine + hydrogen sulfide + H(+)
2 l-cysteine <=> l-lanthionine + hydrogen sulfide + h(+)
2 L-cysteine <=> L-lanthionine + hydrogen sulfide + H(+)
2 l-cysteine <=> l-lanthionine + hydrogen sulfide + h(+)