| P00163 | n/a | 1p84 | 3PH | A | 713 | e1p84C2 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |
| P00163 | n/a | 1p84 | 3PH | D | 714 | e1p84C2 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |
| P00163 | n/a | 4pd4 | 3PH | A | 502 | e4pd4C2 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |
| P00163 | n/a | 4pd4 | 3PH | C | 4006 | e4pd4C1 | a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) | a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) | a domain/subunit of cytochrome bc1 complex (Ubiquinol-cytochrome c reductase) | Cytochrom_B_C |
| P00163 | n/a | 4pd4 | 3PH | C | 4006 | e4pd4C2 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |
| P00163 | n/a | 4pd4 | 3PH | E | 302 | e4pd4C2 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |