Fig. 4.—

Phylogenies of isochorismate synthase (MenF) based on ML (A) and Bayesian (B) methods. These phylogenies were calculated from an unambiguous amino acid alignment of 146 sequences and 104 sites. Fifty-one sequences of anthranilate synthase (component I), representing 20 phyla, were used as the outgroup. Archaeal species are displayed in red. Bootstrap values above 49% and posterior probabilities above 0.49 are shown as branch labels. The scale bar denotes the number of substitutions per site.