Fig 12.

Cladogram of Epsilonproteobacteria, for the order of Campylobacterales (generated via the PATRIC mulitgene phylogentic tree viewer). Species are listed in order of similarity at the genome level. Species are labeled according to the presence or absence of three purine salvage pathway-associated genes: deoD, purine nucleoside phosphorylase; guaC, GMP reductase; gpt, guanine phosphoribosyltransferase. H. pylori, the only bacterium lacking more than 4 of the 10 pur genes required for IMP production and thereby de novo purine nucleotide biosynthesis, is highlighted in gray.