preferred_name: L-citrullyl-[protein] + NH4(+) => L-arginyl-[protein] + H2O
preferred_name_lc: l-citrullyl-[protein] + nh4(+) => l-arginyl-[protein] + h2o
label: L-citrullyl-[protein] + NH4(+) => L-arginyl-[protein] + H2O
label_lc: l-citrullyl-[protein] + nh4(+) => l-arginyl-[protein] + h2o