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Figure 1 | Virology Journal

Figure 1

From: Adaptive evolution of bat dipeptidyl peptidase 4 (dpp4): implications for the origin and emergence of Middle East respiratory syndrome coronavirus

Figure 1

Selection pressures on DPP4 during mammalian evolution. Ratios of nonsynonymous (dN) to synonymous (dS) nucleotide substitutions per site (dN/dS) are shown on four major ancestral branches; dN and dS numbers are also given in parentheses. Values for individual lineages are given in Table 2. DPP4 sequences of bat origin are shaded.

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