preferred_name: L-cysteinyl-[protein] + fumarate => S-(2-succinyl)-L-cysteinyl-[protein]
preferred_name_lc: l-cysteinyl-[protein] + fumarate => s-(2-succinyl)-l-cysteinyl-[protein]
label: L-cysteinyl-[protein] + fumarate => S-(2-succinyl)-L-cysteinyl-[protein]
label_lc: l-cysteinyl-[protein] + fumarate => s-(2-succinyl)-l-cysteinyl-[protein]