preferred_name: PE is converted to PS by PTDSS2 (Dictyostelium discoideum)
preferred_name_lc: pe is converted to ps by ptdss2 (dictyostelium discoideum)
label: PE is converted to PS by PTDSS2 (Dictyostelium discoideum)
label_lc: pe is converted to ps by ptdss2 (dictyostelium discoideum)