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Table 3 Descriptive analysis of MLST data genetic variability at Streptococcus thermophilus loci

From: Multilocus sequence typing of Streptococcus thermophilus from naturally fermented dairy foods in China and Mongolia

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
  1. a: Mean pairwise nucleotide difference per site
  2. b: d N/d S represents the ratio of nonsynonymous to synonymous substitutions