preferred_name: itaconate + L-cysteinyl-[protein] => S-(2,3-dicarboxypropyl)-L-cysteinyl-[protein]
preferred_name_lc: itaconate + l-cysteinyl-[protein] => s-(2,3-dicarboxypropyl)-l-cysteinyl-[protein]
label: itaconate + L-cysteinyl-[protein] => S-(2,3-dicarboxypropyl)-L-cysteinyl-[protein]
label_lc: itaconate + l-cysteinyl-[protein] => s-(2,3-dicarboxypropyl)-l-cysteinyl-[protein]