Sinorhizobium fredii encodes TpiB xenologs. Sinorhizobium fredii contains a second suboperon that appears homologous to the eryR-tpiB-rpiB suboperon in the erythritol locus (Figure 1). The TpiB amino acid sequence was used as a representative of this suboperon to construct a phylogenetic tree. The branch corresponding to the TpiB encoded outside of the erythritol locus is highlighted in red. The tree was constructed using ML and Bayesian analysis. Support for each node is expressed as a percentage based on posterior probabilities (Bayesian analysis) and bootstrap values (ML). The branch lengths are based on ML analysis and are proportional to the number of substitutions per site.
Geddes et al. BMC Microbiology 2013 13:46 doi:10.1186/1471-2180-13-46