. 2013 Jul;13(7):479–488. doi: 10.1089/vbz.2011.0870

Table 3.

Directional Selection Analysis of the E Protein Sequences

Residue^a	p Value^b	Bias^c	Proportion (%)^d	No. of sites^e
A	0.0000	3.09	12.5	3
I	0.0000	23.05	3.07	3
M	0.0006	51.29	1.75	3
N	0.0000	34.30	2.17	2
P	0.0000	83.26	1.35	2
T	0.0000	4.31	16.63	2
V	0.0025	20.97	3.34	2

^{^a}

The target residue for directional selection.

^{^b}

The p value associated with the test of directional versus non-directional selection.

^{^c}

The relative rate of amino acid substitution across the alignment towards the target site.

^{^d}

The percentage of sites that evolve under a directional model versus a non-directional model.

^{^e}

The number of sites that show evidence of directional selection for the particular site.