| Chain | GOid | namespace | contents |
| 3A | 0004129 | molecular_function | cytochrome-c oxidase activity |
| 3A | 0005743 | cellular_component | mitochondrial inner membrane |
| 3A | 0006119 | biological_process | oxidative phosphorylation |
| 3A | 0009060 | biological_process | aerobic respiration |
| 3A | 0016020 | cellular_component | membrane |
| 3A | 0020037 | molecular_function | heme binding |
| 3A | 0022904 | biological_process | respiratory electron transport chain |
| 3A | 0045277 | cellular_component | respiratory chain complex IV |
| 3A | 0046872 | molecular_function | metal ion binding |
| 3A | 1902600 | biological_process | proton transmembrane transport |
| 3B | 0004129 | molecular_function | cytochrome-c oxidase activity |
| 3B | 0005507 | molecular_function | copper ion binding |
| 3B | 0016020 | cellular_component | membrane |
| 3B | 0016491 | molecular_function | oxidoreductase activity |
| 3B | 0022900 | biological_process | electron transport chain |
| 3B | 0031966 | cellular_component | mitochondrial membrane |
| 3B | 1902600 | biological_process | proton transmembrane transport |
| 3C | 0004129 | molecular_function | cytochrome-c oxidase activity |
| 3C | 0005507 | molecular_function | copper ion binding |
| 3C | 0016020 | cellular_component | membrane |
| 3C | 0016491 | molecular_function | oxidoreductase activity |
| 3C | 0046872 | molecular_function | metal ion binding |
| 3C | 1902600 | biological_process | proton transmembrane transport |
| 3D | 0004129 | molecular_function | cytochrome-c oxidase activity |
| 3D | 0005739 | cellular_component | mitochondrion |
| 3D | 0006123 | biological_process | mitochondrial electron transport, cytochrome c to oxygen |
| 3D | 0009055 | molecular_function | electron transfer activity |
| 3D | 0016020 | cellular_component | membrane |
| 3D | 0016491 | molecular_function | oxidoreductase activity |
| 3D | 0019646 | biological_process | aerobic electron transport chain |
| 3D | 0022904 | biological_process | respiratory electron transport chain |
| 3D | 0045277 | cellular_component | respiratory chain complex IV |
| 3D | 1902600 | biological_process | proton transmembrane transport |
| 3E | 0005739 | cellular_component | mitochondrion |
| 3E | 0005740 | cellular_component | mitochondrial envelope |
| 3E | 0006123 | biological_process | mitochondrial electron transport, cytochrome c to oxygen |
| 3E | 0045277 | cellular_component | respiratory chain complex IV |
| 3H | 0004129 | molecular_function | cytochrome-c oxidase activity |
| 3H | 0005739 | cellular_component | mitochondrion |
| 3H | 0016020 | cellular_component | membrane |
| 3H | 0045277 | cellular_component | respiratory chain complex IV |
| 3H | 1902600 | biological_process | proton transmembrane transport |