Fig. 1.

Phylogenetic tree reconstructed with 555 concatenated core proteins using ProteinOrtho software from 78 Rickettsia complete genomes from GenBank (see [8]) and Tillamook 23. Phylogenetic analysis was run using Phyml software for maximum-likelihood with options JTT and gamma models and 500 bootstraps (shown as percentages in nodes; all nodes had 100% bootstrap support except where otherwise noted). Tree topology was constructed using FigTree software. Clades with three or more strains of the same species are collapsed. The tree is rooted on Rickettsia bellii OSU85-389.