Figure 2. Schematic Representation of Modern and Ancestral (R0 and R1) Rickettsia Genomes.
The state of a RIG for each species or node is represented by a small box colored in red (full-length), yellow (pseudogene), or black (absent). COG classifications of the RIGs are given in the first line of the alignment: information storage and processing (blue), cellular processes (green), metabolism (pink), and poorly characterized (gray). The COG classification was assigned based on the RPSBLAST E-value of 10−5. The RIGs are ordered according to the inferred genome arrangement in the R1 node, except for R. bellii-specific RIGs that are displayed at the end of the alignment. Species name abbreviations are as follows: B (R. bellii), F (R. felis), M (R. massiliae), C (R. conorii), A (R. africae), P (R. prowazekii), and T (R. typhi). Each row of alignment corresponds to 200 RIGs.