| cytochrome c oxidase | exact synonym | |
| cox4 | exact synonym | |
| Cox4 | exact synonym | |
| Cytochrome c oxidase IV | exact synonym | |
| COX | exact synonym | |
| CX42 | exact synonym | |
| dCOX-IV | exact synonym | |
| Subunit IV | exact synonym | |
| Cytochrome c oxidase subunit IV | exact synonym | |
| COXIV | exact synonym | |
| Cytochrome c oxidase Subunit IV | exact synonym | |
| CX41 | exact synonym | |
| Cytochrome c oxidase subunit 4 | exact synonym | |
| CG10664 | exact synonym | |
| C-IV s.4 | exact synonym | |
| COX IV | exact synonym | |
| COX4 | exact synonym | |
| CcO IV | exact synonym | |
| CoxIV | exact synonym | |
| CoIV | exact synonym | |
| IV | exact synonym | |
| Cytochrome c oxidase Polypeptide IV | exact synonym | |
| dCOXIV | exact synonym | |