ModH allele and repeat numbers for H. pylori clinical isolates and genome sequence strains.

aNumber and expression state of poly-guanosine repeats within the mod gene; in-frame (ON) or out-of-frame (OFF).bA strain was defined as having the modH allele if the DNA recognition region was ≥90% identical at the nucleotide level to the modH gene of H. pylori. A strain was defined as having a particular modH allele if the DNA recognition region was ≥90% identical at the amino acid and nucleotide level to the modH allele. Refer to Figure 1.cres gene contains a nonsense mutation (strain F32, nucleotide 1587 and strain 52, nucleotide 537 change from G to T) or missing base pair resulting in a frame-shift mutation (strain 51, nucleotide 2054).dres gene not detected.