- Classes: Peptides
 - Folds: Complement system anchor region
 - Superfamilies: Complement system anchor region
 - Families: Complement system anchor region
 
Protein Domains:
- Complement C3 anchor region
- [AB]
 
 - Complement C5 anchor region
- [A]
 
 
	* [ ] : Polypeptide  - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
