preferred_name: SUMOylation of PCNA with SUMO1 (Xenopus tropicalis)
preferred_name_lc: sumoylation of pcna with sumo1 (xenopus tropicalis)
label: SUMOylation of PCNA with SUMO1 (Xenopus tropicalis)
label_lc: sumoylation of pcna with sumo1 (xenopus tropicalis)