TABLE 1.
Observed and expected, calculated with the TMSTAT formalism, number of occurrences of the (S/T)xxP, (S/T)xP, (S/T)P, P(S/T), Px(S/T), and Pxx(S/T) motifs in a nonhomologous database of transmembrane helices; and the odds ratio and its significance
| Pair | Observed | Expected | Odds ratio | Significance |
|---|---|---|---|---|
| SxxP | 292 | 294.9 | 0.99 | 0.88 |
| TxxP | 267 | 268.7 | 0.99 | 0.95 |
| SxP | 353 | 314.6 | 1.12 | 0.02 |
| TxP | 316 | 286.6 | 1.10 | 0.07 |
| SP | 291 | 334.2 | 0.87 | 0.01 |
| TP | 325 | 304.6 | 1.07 | 0.21 |
| PS | 280 | 334.2 | 0.84 | 0.001 |
| PT | 308 | 304.6 | 1.01 | 0.83 |
| PxS | 297 | 314.6 | 0.94 | 0.31 |
| PxT | 283 | 286.6 | 0.99 | 0.85 |
| PxxS | 249 | 294.9 | 0.84 | 0.004 |
| PxxT | 250 | 268.7 | 0.93 | 0.23 |