Review Article
Messenger RNA Turnover Processes in Escherichia coli, Bacillus subtilis, and Emerging Studies in Staphylococcus aureus
Table 2
E. coli exoribonucleases.
| Ribonuclease | Gene | Size | tRNA processing mechanism | mRNA stability |
| PNPase | pnp | 80 kDa | ND | yes | Oligo-RNase | orn | 38 kDa | ND | yes | RNase D | rnd | 42 kDa | Final processing of terminus | ND | RNase II | rnb | 72 kDa | trailer removal | yes | RNase PH | rph | 24 kDa | Removal of +4, +3, and +2 residues after the CCA | ND | RNase R | rnr | 95 kDa | ND | yes | RNase T | rnt | 23 kDa | Removal of +4, +3, and +1 residues after the CCA | ND |
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