4 component system: The Proton-translocating Cytochrome Oxidase (COX) Superfamily
| P0ABJ1 | Ubiquinol oxidase subunit 2 |
|---|---|
| P0ABI8 | Ubiquinol oxidase subunit 1 |
| P0ABJ3 | Cytochrome o ubiquinol oxidase subunit 3 |
| P0ABJ6 | Cytochrome o ubiquinol oxidase protein CyoD |