| P83791 | DB03317 | 2d2c | HEC | A | 303 | e2d2cA1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |
| P83791 | DB03317 | 2d2c | HEC | N | 303 | e2d2cN1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |
| P83791 | DB03317 | 4pv1 | HEC | A | 305 | e4pv1A1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Cytochrome_B |