Structural Databases
- Protein Data Bank - repository of solved structures
- Download Molecular Machinery poster
- SCOP - Structure Classification of Proteins
- Hierarchical arrangement of known structures
- CATH - Class, Architecture, Topology and Homogous Superfamily
- Hierarchical arrangement of known structures
- Pfam - Protein Families
- DALI - Distance Matrix Alignment
- Searches for and compares the structures of proteins in 3D.