Nonfimbrial Adhesin Mutants Reveal Divergent Escherichia coli O157:H7 Adherence Mechanisms on Human and Cattle Epithelial Cells

Figure 2

Phylogenetic analysis of SS isolates to EDL933 based on adhesins. A maximum likelihood bootstrap analysis was performed using the adhesion-related genes that displayed SNPs compared to the EDL933 isolate. There were 11 other isolates in combination with SS17 and EDL933 run in this analysis. This analysis revealed that, solely based on these adhesins, the isolates clustered close to their lineages and PFGE types. The panel to the right is aligned with the nucleotide changes in each gene aligned to the nucleotides found in the corresponding isolate. The scale (0.05) indicates distance based on the number of changes/sites.