Class | Number of folds | Number of superfamilies | Number of families |
---|---|---|---|
a: All alpha proteins | 138 | 224 | 337 |
b: All beta proteins | 93 | 171 | 276 |
c: Alpha and beta proteins (a/b) | 97 | 167 | 374 |
d: Alpha and beta proteins (a+b) | 184 | 263 | 391 |
e: Multi-domain proteins (alpha and beta) | 28 | 28 | 35 |
f: Membrane and cell surface proteins and peptides | 11 | 17 | 28 |
g: Small proteins | 54 | 77 | 116 |
Totals | 605 | 947 | 1557 |