Table 2

Maximum likelihood estimates of parameters and sites inferred to be under positive selection in the amino-terminal abaecin unit.

Model

l

LRT

Parameters

Positive selected sites


M0

-312.78

ω = 0.15

M1a

-306.30

p0 = 0.80, ω0 = 0.046

p1 = 0.20, ω1 = 1.00

M2a

-304.95

2.7

p0 = 0.80, ω0 = 0.05

p1 = 0.00, ω1 = 0.05315

p2 = 0.20, ω2 = 5.91067

4Y, 6P*, 8R, 11Q, 12K

M7

-306.58

p = 0.48 q = 1.62

M8

-304.00

5.16

p0 = 0.80, p = 1.06, q = 14.00

(p1 = 0.20), ω = 6.69

4Y, 6P*, 8R, 11Q, 12K


Note: l is the log likelihood; LRT is a likelihood ratio test, which is twice the log likelihood difference (2Δl) between null models (M1a and M7) and their alternative models (M2a and M8): M1a/M2a = 2.7 (χ2 significant value: P < 0.3); M7/M8 = 5.16 (0.05 < P < 0.1). Positively selected sites identified by the BEB method under M2a and M8 with posterior probabilities (p) > 0.6 are shown, in which those with p > 0.95 are indicated by bold and *.

Tian et al. BMC Genomics 2010 11:187   doi:10.1186/1471-2164-11-187

Open Data