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