Table 1.

Occurrence of RNases E, J, and Y in prokaryotes

Percentage of species containing RNases E/G (green), J (blue) and/or Y (red) with respect to the total number of organisms within a phylum. Combinations of RNases present in the majority of a phylum are shown on the right. All Archaea contain an RNase J-like activity but they can be partitioned into two major subdivisions that correspond to orthologs of eukaryal cleavage and polyadenylation specificity factor (CPSF73) and bacterial RNase J [316]