- Classes: Membrane and cell surface proteins and peptides
 - Folds: Cytochrome c oxidase subunit I-like
 - Superfamilies: Cytochrome c oxidase subunit I-like
 - Families: Cytochrome c oxidase subunit I-like
 
Protein Domains:
- Bacterial aa3 type cytochrome c oxidase subunit I
- [ABCD], [ABCDEF]
 - [AB], [ABCD]
 
 - Bacterial ba3 type cytochrome c oxidase subunit I
- [ABC]
 
 - Cytochrome O ubiquinol oxidase, subunit I
- [ABC]
 
 - Mitochondrial cytochrome c oxidase, subunit I
- [A2B2C2D2E2F2G2H2I2J2K2L2M2], [ABCDEFGHIJKLM], [ABCDEFGHIJKLMN]
 
 - automated matches
- [A2B2C2D2E2F2G2H2I2J2K2L2M2], [ABCDEFGHIJKLM]
 - [ABCD]
 - [AB]
 
 
	* [ ] : Polypeptide  - [AB] : Protein, [ab] : Small peptide
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
* ( ) : Nucleic acid - (AB) : DNA, (ab) : RNA
