Fig. 1

Phylogeny of R.PabI and M.PabI homologs. Trees are rooted at the midpoint. Bootstrap values of 1000 replicates over 50 % are shown at the nodes. Archaeal sequences are colored in green, Helicobacter sequences in red and Campylobacter sequences in blue. a Tree of R.PabI homologs. Four orthologous loci (H-1, H-3, C-3, and H-9) are indicated on the right. The order of R.PabI and M.PabI homolog genes is illustrated on the far right. b Tree of M.PabI homologs. Loci are indicated on the right: H-1 to H-9 for Helicobacter and C-1 to C-5 for Campylobacter. Neighboring genes for each locus are shown in Table 1