7 component system: The HQNO-bound Alternative Complex III (HAC3) Family
| 8X2J_B | B Chain B, Fe-S-cluster-containing hydrogenase components 1-like protein |
|---|---|
| 8X2J_C | C Chain C, Polysulphide reductase NrfD |
| 8X2J_D | D Chain D, Quinol:cytochrome c oxidoreductase membrane protein |
| 8X2J_E | E Chain E, Cytochrome c domain-containing protein |
| 8X2J_F | F Chain F, Quinol:cytochrome c oxidoreductase quinone-binding subunit 2 |
| 8X2J_G | G Chain G, Uncharacterized protein |
| 8X2J_I | I Chain I, unknown |