Table 2 |
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|
Maximum likelihood estimates of parameters and sites inferred to be under positive selection in the amino-terminal abaecin unit. |
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|
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 *. |
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|
Tian et al. BMC Genomics 2010 11:187 doi:10.1186/1471-2164-11-187 |
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