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Table 2 Synonymous and non-synonymous substitution rates for exon 2 alleles of the seahorse MH class IIα gene

From: High intralocus variability and interlocus recombination promote immunological diversity in a minimal major histocompatibility system

Locus Length (bp) Samples Alleles dN dS dN/dS
Exon 2 246 101 18 0.039 0.000 ∞**
Exon 2, PBS 60 101 17 0.110 0.000 ∞*
Exon 2, non-PBS 186 101 11 0.018 0.000 ∞*
  1. Probabilities (*< 0.05, **< 0.001, ns = not significant) are derived from a Z-test (H1 = positive selection). Peptide-binding sites (PBS) refer to the human sites, identified by crystallographic analysis [3] (Figure 4).