Table 5 Statistical analysis of amino acids classes found in SMase D positively selected sites. Fisher's exact test
From: Adaptive evolution in the toxicity of a spider’s venom enzymes
| nonpolar + basic | neutral + acidic | Total | |
|---|---|---|---|
| Class-I | 108 | 25 | 133 |
| Class-II | 558 | 639 | 1197 |
| Total | 666 | 664 | 1330 |
