Role of Positive Selection in Functional Divergence of Mammalian Neuronal Apoptosis Inhibitor Proteins during Evolution

Table 2

Test for selection by modified Nei and Gojobori’s.

	N: no. of nonsynonymous sites		S: no. of synonymous sites		dN/dS
	dN	Std. Err.	dS	Std. Err.
Cluster 1	2954.186	24.204	1202.397	14.174	2.46
Cluster 2	2780.340	26.770	1123.943	14.187	2.47

Note: Cluster 1 includes mouse NAIP 5, mouse NAIP, mouse BIRC1E, mouse NAIP6, mouse NAIP 7, rat NAIP5, rat NAIP2, mouse NAIP 1, mouse NAIP 2; Cluster 2 includes human NAIP isoform 2, chimpanzee NAIP isoform 1, human NAIP isoform 1, chimpanzee NAIP isoform 3, monkey NAIP, cow NAIP and horse NAIP, respectively. dN/dS>1 means positive selection.