| Module |
| M00142 | NADH:ubiquinone oxidoreductase, mitochondria |
| M00143 | NADH dehydrogenase (ubiquinone) Fe-S protein/flavoprotein complex, mitochondria |
| M00144 | NADH:quinone oxidoreductase, prokaryotes |
| M00145 | NAD(P)H:quinone oxidoreductase, chloroplasts and cyanobacteria |
| M00146 | NADH dehydrogenase (ubiquinone) 1 alpha subcomplex |
| M00147 | NADH dehydrogenase (ubiquinone) 1 beta subcomplex |
| M00151 | Cytochrome bc1 complex respiratory unit |
| M00153 | Cytochrome bd ubiquinol oxidase |
| M00155 | Cytochrome c oxidase, prokaryotes |
| M00156 | Cytochrome c oxidase, cbb3-type |
|