Figure 3

Phylogenetic trees of erythritol transporters. Unrootedphylogenetic tree including putative homologues to the sugar bindingprotein MptA of Sinorhizobium meliloti and EryG ofRhizobium leguminosarum (A). Support is provided forthe node that clearly separates the putative homologues into twodistinct and distant clades. Separate phylogenetic trees for erythritoltransporters homologous to MptABCDE and EryEFG are depicted (Band C) using aligned amino acid sequences of the putative sugarbinding proteins MptA (B) and EryG (C) as representativesof the transporters phylogenies. The branch that shows the anomalousplacement of the Mesorhizobium ciceri bv. biserrulaewithin the tree of EryEFG homologs is highlighted in red. Trees wereconstructed using ML and Bayesian analysis. Support for each node isexpressed as a percentage based on posterior probabilities (Bayesiananalysis) and bootstrap values (ML). The branch lengths are based on MLanalysis and are proportional to the number of substitutions persite.