preferred_name: [sulfur carrier]-H + L-cysteine <=> [sulfur carrier]-SH + L-alanine
preferred_name_lc: [sulfur carrier]-h + l-cysteine <=> [sulfur carrier]-sh + l-alanine
label: [sulfur carrier]-H + L-cysteine <=> [sulfur carrier]-SH + L-alanine
label_lc: [sulfur carrier]-h + l-cysteine <=> [sulfur carrier]-sh + l-alanine