[A3](a3)
Classes:
- All alpha proteins0
- 1
- 2
- 1
- Artifacts0
- Coiled coil proteins0
- Designed proteins0
- Low resolution protein structures0
- Membrane and cell surface proteins and peptides0
- Multi-domain proteins (alpha and beta)0
- 4
- Peptides0
- Small proteins0
* Number of PDB entries of each Class
