a 3'-end uridylyl-uridine-RNA <=> a 3'-end 2',3'-cyclophospho-uridine-RNA + uridine
a 3'-end uridylyl-uridine-rna <=> a 3'-end 2',3'-cyclophospho-uridine-rna + uridine
a 3'-end uridylyl-uridine-RNA <=> a 3'-end 2',3'-cyclophospho-uridine-RNA + uridine
a 3'-end uridylyl-uridine-rna <=> a 3'-end 2',3'-cyclophospho-uridine-rna + uridine