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Table 1 X. laevis paralogs show an enhanced rate of amino acid change relative to X. laevis-X. tropicalisorthologs.

From: Accelerated gene evolution and subfunctionalization in the pseudotetraploid frog Xenopus laevis

  Amino acid substitutions per site Nucleotide transversions per synonymous site Rate of amino acid substitution per unit nucleotide change
Pair P-dist (σ) Corr 4 DTv (σ) P-dist/4 DTv dN/dS (σ)
L–T 0.0598(2) 0.0973(5) 0.615(4) 0.118(1)
L1–L2 0.0563(3) 0.0707(6) 0.796(8) 0.147(1)
L1–L2/L–T 94.1% 72.7% 129.4% 124.6%
  1. This is demonstrated using both the P-dist/4 DTv measure described in the text, and the conventional ratio of non-synonymous to synonymous substitution rates dN/dS. Both show a 25–30% enhancement in amino acid change. These results are derived from a 513 188 amino acid concatenated, gap-free, multiple sequence alignment (~250 aligned amino acid positions per gene) produced from the 2 135 triplets possessing at least a 50 amino acid aligned block.