| P0AAM1 | DB18267 | 4gd3 | HEM | A | 301 | e4gd3A1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Ni_hydr_CYTB |
| P0AAM1 | DB18267 | 4gd3 | HEM | B | 301 | e4gd3B2 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Ni_hydr_CYTB |
| P0AAM1 | DB18267 | 6g94 | HEM | A | 301 | e6g94A1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Ni_hydr_CYTB |
| P0AAM1 | DB18267 | 6g94 | HEM | B | 301 | e6g94B1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Transmembrane di-heme cytochromes | Ni_hydr_CYTB |