Figure 3.

Phylogenetic trees for elongation factors EF-1α and EF-2, subunit A of topoisomerase VI and reverse gyrase. Unconstrained unrooted maximum likelihood trees of (a) elongation factor EF-1α, (b) elongation factor EF-2, (c) subunit A of topoisomerase VI, and (d) Bayesian tree of reverse gyrase. Bold numbers at nodes are bootstrap values; the other numbers are the Bayesian posterior probabilities. Scale bars represent the number of changes per position for a unit branch length.