preferred_name: PE is converted to PS by PTDSS2 (Xenopus tropicalis)
preferred_name_lc: pe is converted to ps by ptdss2 (xenopus tropicalis)
label: PE is converted to PS by PTDSS2 (Xenopus tropicalis)
label_lc: pe is converted to ps by ptdss2 (xenopus tropicalis)