TABLE 4.

Description analysis of nucleotide sequence data in all isolates, lineage I isolates, and outbreak isolates of serotype 4b

IsolateGeneNo. of polymorphic sites% of polymorphic sitesNo. of synonymous mutationsNo. of nonsynonymous mutationsdN/dS ratioaπ/siteb
All isolates prfA 388.103360.0150.017
inlB 5312.2439150.0800.039
inlC 368.3122140.1150.020
dal 8419.0570140.0630.067
clpP 409.553850.0200.028
lisR 6314.15770.0040.031
Lineage I isolates prfA 111.711010.0170.0033
inlB 255.772050.1390.023
inlC 30.72120.6050.004
dal 71.36610.0740.048
clpP 153.581320.0670.0005
lisR 81.79530.0640.004
Outbreak isolates of serotype 4b prfA 30.64210.0580.0015
inlB 81.84530.3770.0036
inlC 30.72120.5720.0017
dal 51.13410.0740.0027
clpP 00000
lisR 30.67300.0028
  • a The dN/dS ratio was not calculated when the number of nonsynonymous mutations was zero.

  • b Average pairwise nucleotide difference per site.