| IPR036927 | Cytochrome c oxidase-like, subunit I superfamily | Homologous Superfamily |
| IPR000883 | Cytochrome c oxidase subunit I | Family |
| IPR023615 | Cytochrome c oxidase, subunit I, copper-binding site | Binding Site |
| IPR023616 | Cytochrome c oxidase-like, subunit I domain | Domain |
| IPR033944 | Cytochrome c oxidase subunit I domain | Domain |
| IPR003177 | Cytochrome c oxidase subunit VIIa, metazoa | Family |
| IPR036539 | Cytochrome c oxidase, subunit VIIa superfamily | Homologous Superfamily |
| IPR039297 | Cytochrome c oxidase subunit VII | Family |
| IPR023272 | Cytochrome C oxidase, subunit VIIB domain superfamily | Homologous Superfamily |
| IPR008433 | Cytochrome C oxidase, subunit VIIB | Family |
| IPR036636 | Cytochrome c oxidase subunit VIIc superfamily | Homologous Superfamily |
| IPR004202 | Cytochrome c oxidase subunit VIIc | Family |
| IPR003205 | Cytochrome c oxidase, subunit 8 | Family |
| IPR036548 | Cytochrome c oxidase, subunit 8 superfamily | Homologous Superfamily |
| IPR011759 | Cytochrome C oxidase subunit II, transmembrane domain | Domain |
| IPR036257 | Cytochrome C oxidase subunit II, transmembrane domain superfamily | Homologous Superfamily |
| IPR034210 | Cytochrome c oxidase subunit 2, C-terminal | Domain |
| IPR045187 | Cytochrome c/quinol oxidase subunit II | Family |
| IPR002429 | Cytochrome c oxidase subunit II-like C-terminal | Domain |
| IPR008972 | Cupredoxin | Homologous Superfamily |
| IPR001505 | Copper centre Cu(A) | Binding Site |
| IPR014222 | Cytochrome c oxidase, subunit II | Domain |
| IPR035973 | Cytochrome c oxidase subunit III-like superfamily | Homologous Superfamily |
| IPR013833 | Cytochrome c oxidase, subunit III, 4-helical bundle | Homologous Superfamily |
| IPR000298 | Cytochrome c oxidase subunit III-like | Domain |
| IPR033945 | Cytochrome c oxidase subunit III domain | Domain |
| IPR024791 | Cytochrome c oxidase subunit III | Family |
| IPR004203 | Cytochrome c oxidase subunit IV family | Family |
| IPR013288 | Cytochrome c oxidase subunit IV | Family |
| IPR036639 | Cytochrome c oxidase subunit IV superfamily | Homologous Superfamily |
| IPR003204 | Cytochrome c oxidase, subunit Va/VI | Family |
| IPR036545 | Cytochrome c oxidase, subunit Va/VI superfamily | Homologous Superfamily |
| IPR002124 | Cytochrome c oxidase, subunit Vb | Family |
| IPR036972 | Cytochrome c oxidase, subunit Vb superfamily | Homologous Superfamily |
| IPR018507 | Cytochrome c oxidase, subunit VIa, conserved site | Conserved Site |
| IPR036418 | Cytochrome c oxidase, subunit VIa superfamily | Homologous Superfamily |
| IPR001349 | Cytochrome c oxidase, subunit VIa | Family |
| IPR036549 | Cytochrome c oxidase subunit 6B/Cytochrome c oxidase assembly factor 6-like superfamily | Homologous Superfamily |
| IPR048280 | Cytochrome oxidase c subunit VIb-like | Family |
| IPR003213 | Cytochrome c oxidase, subunit VIb | Family |
| IPR037169 | Mitochondrial cytochrome c oxidase subunit VIc/VIIs superfamily | Homologous Superfamily |
| IPR051389 | Cytochrome c oxidase subunit VIc | Family |
| IPR034884 | Mitochondrial cytochrome c oxidase subunit VIc/VIIs | Family |