- Classes: Multi-domain proteins (alpha and beta)
 - Folds: PA C-terminal domain-like
 - Superfamilies: PA C-terminal domain-like
 - Families: PA C-terminal domain-like
 
Protein Domains:
- P3 C-terminal domain
- [ABC]
 
 - PA C-terminal domain
- [ABC](ab)
 - [AB]
 - [A2], [A]
 - [AB], [A]
 
 
	* [ ] : Polypeptide  - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
