Table 1.
Comparison of nucleotide diversity in core genes and homoplasy in the encoded proteins of H. pylori
| Complete set (38 strains) | ‘Local’ (Amerindian) subset (12 strains) | ‘Global’ subset (12 strains) | |
|---|---|---|---|
| core genes analyzed | 992 | 1106 | 1200 |
| diversity, π | 3.81 ± 0.03% | 2.25 ± 0.02% | 4.21 ± 0.03% |
| dN | 1.44 ± 0.03% | 0.91 ± 0.02% | 1.74 ± 0.04% |
| dS | 14.14 ± 0.11% | 7.79 ± 0.08% | 15.23 ± 0.13% |
| genes showing homoplasy in encoded proteins | 971 | 963 | 1126 |
| amino acid positions with repeated changes | 7.85 ± 0.15% | 2.33 ± 0.06% | 5.10 ± 0.11% |
| recombinant genes | 488 | 258 | 490 |
| amino acid positions with repeated changes in encoded proteins of recombinant genes | 9.03 ± 0.20% | 2.83 ± 0.12% | 6.02 ± 0.18% |
| non-recombinant genes | 504 | 848 | 710 |
| amino acid positions with repeated changes in encoded proteins of non-recombinant genes | 6.66 ± 0.21% | 2.15 ± 0.07% | 4.40 ± 0.13% |
The mean values are denoted in percentages along with their standard error values