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. 2013 Apr 18;7(4):e2172. doi: 10.1371/journal.pntd.0002172

Figure 1. An unrooted tree constructed from whole genome sequence alignments of 10 complete genome nucleotide sequences.

Figure 1

An unrooted tree constructed from whole genome sequence alignments using the Maximum Parsimony method and MEGA software [34]. The bar scale corresponds to 1000 nt changes. Bootstrap values based on 1,000 replications are shown next to the branches. All positions containing deletions in at least one genome sequence were omitted from further analysis. The analysis comprised 10 complete genome nucleotide sequences including 5 strains of TPA (Treponema pallidum ssp. pallidum), 3 strains of TPE (Treponema pallidum ssp. pertenue), one TPc (Treponema paraluiscuniculi) strain and the FB strain. There were a total of 1,129,016 nucleotide positions aligned in the final dataset. Note the clustering of the FB genome with other TPE strains. The branch of TPc was shortened (//).