Table 3.
Descriptive analysis of MLST data genetic variability at Streptococcus thermophilus loci
| Gene | No. of | πa/site | G + C content (mol %) | d N/d S b | |
|---|---|---|---|---|---|
| alleles | polymorphic sites | ||||
| carB | 10 | 10 | 0.0050 | 43.49 | 0.1439 |
| clpX | 18 | 20 | 0.0055 | 41.62 | 0.0789 |
| dnaA | 9 | 12 | 0.0054 | 36.89 | 0.0819 |
| murC | 9 | 8 | 0.0047 | 40.45 | 0.0360 |
| murE | 14 | 19 | 0.0048 | 41.64 | 0.0910 |
| pepN | 17 | 14 | 0.0056 | 44.14 | 0.1734 |
| pepX | 15 | 16 | 0.0053 | 41.97 | 0.2239 |
| pyrG | 12 | 12 | 0.0055 | 42.07 | 0.0311 |
| recA | 7 | 8 | 0.0043 | 39.08 | 0.0807 |
| rpoB | 13 | 13 | 0.0040 | 43.41 | 0.1046 |
a: Mean pairwise nucleotide difference per site
b: d N/d S represents the ratio of nonsynonymous to synonymous substitutions