Figure 2
From: Allelic diversity and phylogeny of homB, a novel co-virulence marker of Helicobacter pylori
Phylogenetic analysis of 58 homB and 48 homA sequences, obtained from Helicobacter pylori clinical strains from different geographical regions. The branch length index is represented below the tree. Country of origin is located at the beginning of each strain designation (Pt, Portugal; Fr, France; Sw, Sweden; Gr, Germany; USA; Br, Brazil; Col, Colombia; Jp, Japan; Ko, Korea; BF, Burkina Faso) followed by the homB or homA status. Dotted circle, East Asian cluster; Full circle, Western cluster. The sequence of the homB and homA genes of the three H. pylori reference strains, 26695, J99 and HPAG1, were also included. The dotted line separates the homB and homA clusters. The numbers next to the main nodes are bootstrap values over 75% after 1000 iterations.