Table 2.
Putative Positively Selected Sites Inferred by Branch Site Models
| Branch | 2Δl | P Value | Number of Sites | Sites under Positive Selection |
| A | 12.142 | 4.93 × 10−04 | 1 | L106T |
| B | 12.269 | 4.61 × 10−04 | 7 | M135W, L147I, Q177T, I227L, C228A, K276G, T379V |
| C | 28.970 | 7.35 × 10−08 | 11 | W93Y, S98Q, S104G, V236I, I260Q, F316W, S342S, A361E, T362L, I375A, T381V |
| D | 17.067 | 3.61 × 10−05 | 12 | A88S, T119S, F180W, L189C, F250H, A270S, N288E, S292I, T295R, W300Y, T313S, K333R |
| E | 11.981 | 5.37 × 10−04 | 4 | Y83I, T107F, C228I, P252M |
| F | 11.493 | 6.99 × 10−04 | 1 | R209E |
| G | 12.885 | 3.31 × 10−04 | 2 | Y155I, Y274F |
| H | 12.694 | 3.67 × 10−04 | 4 | T100D, L106A, L111G, N282S |
NOTE.—Branches with significant P values (degree of freedom = 1) after Bonferroni correction under branch site models and putative adaptive sites with posterior probability higher than 0.95 in Bayes empirical Bayes analysis are listed. Numbers labeled on these sites indicate the sequence positions in the consensus sequence. Capital letters flanking the sites indicate the amino acid states before and after the change, respectively. S342S is the site involved in two nonsynonymous changes according to the model.