preferred_name: a thiol + pyruvate + NH4(+) => an S-substituted L-cysteine + H2O
preferred_name_lc: a thiol + pyruvate + nh4(+) => an s-substituted l-cysteine + h2o
label: a thiol + pyruvate + NH4(+) => an S-substituted L-cysteine + H2O
label_lc: a thiol + pyruvate + nh4(+) => an s-substituted l-cysteine + h2o