| P69054 | DB08690 | 1nek | UQ2 | D | 306 | e1nekC1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Sdh_cyt |
| P69054 | DB08690 | 7jz2 | UQ2 | D | 202 | e7jz2C1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Sdh_cyt |
| P69054 | DB08690 | 7jz2 | UQ2 | H | 1201 | e7jz2G1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Sdh_cyt |
| P69054 | DB08690 | 7jz2 | UQ2 | L | 1201 | e7jz2K1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Sdh_cyt |