Table 3. GPCR disulfide bond conservation.
| Receptors
|
C110—C187 disulfide bond
|
||
|---|---|---|---|
| Classes | Sequences | % present | % absent |
| A | 1,972 | 92.4 | 7.6 |
| B | 163 | 97.6 | 2.4 |
| C | 75 | 91.5 | 8.5 |
| D | 24 | 87.5 | 12.5 |
| E | 5 | 100.0 | 0.0 |
| Frizzled/smoothened | 68 | 97.1 | 2.9 |
| Putative | 317 | 17.0 | 83.0 |
| Orphans | 338 | 41.4 | 58.6 |
| Total | 2,962 | 78.9 | 21.1 |