- Classes: All alpha proteins
 - Folds: F-box domain
 - Superfamilies: F-box domain
 - Families: F-box domain
 
Protein Domains:
- Cdc4 F-box and linker domains
- [A2B2], [AB][a]
 
 - F-box/WD repeat-containing protein 7, FBXW7
- [AB], [AB][a]
 
 - F-box/WD-repeat protein 1 (beta-TRCP1)
- [AB][a]
 
 - Skp2
- [ABC], [ABC][a], [A2B2], [AB], [ABCDE]
 
 
	* [ ] : Polypeptide  - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
