- Classes: All alpha proteins
 - Folds: Transducin (alpha subunit), insertion domain
 - Superfamilies: Transducin (alpha subunit), insertion domain
 - Families: Transducin (alpha subunit), insertion domain
 
Protein Domains:
- Transducin (alpha subunit), insertion domain
- [ABC], [A], [A2], [A2B2C2]
 - [A][a], [AB], [A]
 - [A], [ABC], [AB]
 - [AB], [A], [ABC]
 
 
	* [ ] : Polypeptide  - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
