Fig. 2: Phylogenetic analyses demonstrate a close relationship between land plant and chlamydial CKXs.

The reduced MrBayes phylogeny (see Fig. S1 for the full tree topology) constructed from the two domain regions of the CKX proteins of six representative land plants, one excavate, and 49 selected bacteria (see Table S1) is shown. Support values (Bayesian posterior probabilities×100) greater than 50 are indicated at the nodes. Color coding: Green, land plants; blue, bacteria; gray, excavate.