One of the themes that keeps popping up here is that of nucleases. I thought I would post an adaptation of a table from a recent review by Ciarán Condon that lists the various ribonucleases in E. coli and B. subtilis. The point is to illustrate the variety of nucleases that exist in bacteria, and to get readers to think more of the importance of RNA processing and, moreso, RNA turnover.
This table is adapted from Condon C (2007), Maturation and degradation of RNA in bacteria, Current Opinion in Microbiology 10: 271–278. Enjoy.