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. 2017 Mar 23;3(3):mgen000106. doi: 10.1099/mgen.0.000106

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© 2017 The Authors

This is an open access article under the terms of the Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution and reproduction in any medium, provided the original author and source are credited.

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Fig. 3. — Phylogenetic relationships amongst sequenced E. coli genomes. The genomes of E. albertii and E. fergusonii are included as outgroup sequences. The tree was obtained by maximum likelihood analysis of a concatenated alignment of 2173 genes, using the general time reversible (GTR/REV) model, with the CAT approximation of rate heterogeneity as implemented in RAxML version 8.1.3. The numbers on individual branches indicate the percentage support from 100 non-parametric bootstrap replicates, performed using the rapid algorithm implemented in RAxML. The branch length indicates the number of substitutions per site. The major E. coli phylogenetic groups are indicated.