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Table 2 Substitution rates (× 10-3 per site per year) and Ka/Ks ratio in the coding regions.

From: Moderate mutation rate in the SARS coronavirus genome and its implications

  Non-synonymous sites Synonymous sites Ka/Ks
Total 1.16–3.30 1.67–4.67 0.70
Nonstructural region 0.81–2.40 1.78–5.07 0.46
Structural region 2.03–5.53 1.40–3.69 1.47
Nsp1 1.05–3.13 0.85–2.60 1.22
S 1.11–3.02 3.22–8.50 0.35
EMN 3.35–9.22 0 » 1
  1. The same divergence time as in Table 1 was used. Nonstructural region denotes the 5' two-thirds of the coding regions (sites 265 – 21485) and structural region denotes the 3' one-third of the coding regions (21492 – 29388). EMN denotes three genes E, M, and N.