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Table 2 Comparison of SNP frequency and distribution into different functional groups

From: Conserved genes in a path from commensalism to pathogenicity: comparative phylogenetic profiles of Staphylococcus epidermidis RP62A and ATCC12228

Groupsa No.CDS n+s nb s n/s P I c P II P III
I 11 112 47 65 0.723    
II 6 84 34 50 0.68 0.834   
III 48 400 99 301 0.329 0.000* 0.003*  
Total 931 7322 2151 5171 0.416 0.003* d 0.025* d 0.047* d
  1. aGroups defined as (I) genes whose products are virulence factors and genomic islands in both S. epidermidis genome; (II) genes whose products are surface proteins; (III) genes whose products belong to translation, ribosomal structure and biogenesis catalog according to COG.
  2. b(n) number of non-synonymous SNPs; (s) number of synonymous SNPs; (n/s) ratios of non-synonymous SNPs vs. synonymous SNPs.
  3. c P-value from χ2 test for the difference in n/s ratios in all the pairwise comparisons among the three functional groups (* indicates p < 0.05).
  4. dP-value from χ2 test for the difference in n/s ratios between the three functional groups and total without themselves (* indicates p < 0.05).