preferred_name: Addition of the third nucleotide on the nascent transcript (Dictyostelium discoideum)
preferred_name_lc: addition of the third nucleotide on the nascent transcript (dictyostelium discoideum)
label: Addition of the third nucleotide on the nascent transcript (Dictyostelium discoideum)
label_lc: addition of the third nucleotide on the nascent transcript (dictyostelium discoideum)