Figure 1.

Neighbour-joining tree based on concatenated sequences for 12 highly conserved proteins. The tree was rooted using sequences for Deinococcus-Thermus species and numbers on the nodes indicate bootstrap scores in the NJ and maximum-likelihood analyses (NJ/MP). The branching position of G. forsetii, which became available after this analysis was completed, is not shown. However, our analysis of a smaller dataset indicates that it exhibits closest affinity for the flavobacteria Psychrobacter torquis (results not shown).