| P18946 | DB09270 | 1bcc | U10 | C | 383 | e1bccC2 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |
| P18946 | DB09270 | 2bcc | U10 | C | 383 | e2bccC2 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |
| P18946 | DB09270 | 4u3f | U10 | C | 504 | e4u3fC1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |
| P18946 | DB09270 | 4u3f | U10 | P | 405 | e4u3fP2 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |