poly(U)-specific exoribonuclease activity, producing 3' uridine cyclic phosphate ends
Catalysis of the reaction: a 3'-end uridylyl-uridine-RNA = a 3'-end 2',3'-cyclophospho-uridine-RNA + uridine.
GO:0000175
3'-5'-RNA exonuclease activity
is_a
SPAC23C11.10