
RPEs found within the RNA genes. (a) The standard form of the tmRNA genes observed in most bacterial species. (b) The permutated form of the tmRNA gene observed in α-proteobacteria (Keiler et al. 2000). (c) Locations of the RPE-1 and RPE-5 inserted in the tmRNA genes of Rickettsia. Approximate locations of the primers are indicated by triangles. (d) The secondary structure model of the M1 RNA and the insertion site of the RPE-5 in R. conorii.











