rRNA catabolic process cytoplasmic polyadenylation-dependent rRNA catabolic process 2011-03-25T02:14:50Z biological_process bf The chemical reactions and pathways occurring in the cytoplasm and resulting in the breakdown of a ribosomal RNA (rRNA) molecule, initiated by the enzymatic addition of a sequence of adenylyl residues (polyadenylation) at the 3' end the target rRNA truncated degradation intermediate. cytoplasmic poly(A)-dependent rRNA catabolic process GO:0035760 polyadenylation-dependent ncRNA catabolic process cytoplasmic polyadenylation-dependent RNA catabolic process