- Classes: Low resolution protein structures
 - Folds: Computational models partly based on experimental data
 - Superfamilies: Computational models partly based on experimental data
 - Families: Computational models partly based on experimental data
 
Protein Domains:
- Cytochrome c'
- [A]
 
 - Hypothetical protein PF1455
- [A]
 
 - Nodulation protein NodF
- [A]
 
 - Ribosomal L11 protein in complex with thiostrepton and a 23S rRNA fragment
- [A][a](a)
 
 - Ternary complex formed between MarA, the alpha-CTD of RNA polymerase and DNA
- [AB](AB)
 
 - Tumor suppressor p15(ink4b)
- [A]
 
 
	* [ ] : Polypeptide  - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
