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