Fig. 4

Phylogenetic analyses of cbp genes with high similarity. a, b Nucleotide-based Bayesian phylogenetic tree of the lytA, lytB, lytC, cbpE and cbpL genes (a) and the cbpF, cbpG, cbpJ and cbpK genes (b) in S. pneumoniae. The trees are unrooted although they are presented as midpoint-rooted for clarity. Strains with identical sequences are listed on the same branch. Posterior probabilities are shown near the nodes. The scale bar indicates nucleotide substitutions per site