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| SCOP Class | Count | Percentage |
| Small proteins | 20297 | 24.46% |
| Alpha and beta proteins (a+b) | 18250 | 21.99% |
| All beta proteins | 15273 | 18.40% |
| All alpha proteins | 13407 | 16.16% |
| Alpha/beta proteins (a/b) | 10935 | 13.18% |
| Membrane and cell surface proteins and peptides | 3185 | 3.84% |
| Peptides | 677 | 0.82% |
| Multi-domain proteins (alpha and beta) | 578 | 0.70% |
| Coiled coil proteins | 377 | 0.45% |
| Designed proteins | 7 | 0.01% |
