Figure 2
From: Horizontal gene transfer of zinc and non-zinc forms of bacterial ribosomal protein S4
Consensus phylogenetic tree of ribosomal protein S4 in Proteobacteria. The phylogenetic tree for Proteobacteria (except Alphaproteobacteria) was constructed from 1000 maximum-likelihood inferences and rooted using Deinococcus-Thermus and Thermotogae as outgroups. Branches that are monophyletic with respect to a class or order are collapsed with the number of taxa in the branch given in parentheses. Node label are bootstrap proportions estimated from 5000 replicates. The scale bar represents one change per site.