| P0A8Q3 | n/a | 1kf6 | CE1 | O | 813 | e1kf6P1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Fumarate_red_D |
| P0A8Q3 | n/a | 1kf6 | CE1 | P | 810 | e1kf6D1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Fumarate_red_C |
| P0A8Q3 | n/a | 1kf6 | CE1 | P | 810 | e1kf6P1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Fumarate_red_D |
| P0A8Q3 | n/a | 1kfy | CE1 | D | 710 | e1kfyD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Fumarate_red_D |
| P0A8Q3 | n/a | 1kfy | CE1 | D | 710 | e1kfyP1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Fumarate_red_D |
| P0A8Q3 | n/a | 1kfy | CE1 | P | 810 | e1kfyD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Fumarate_red_D |
| P0A8Q3 | n/a | 1kfy | CE1 | P | 810 | e1kfyP1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Fumarate_red_D |
| P0A8Q3 | n/a | 1l0v | CE1 | D | 710 | e1l0vD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Fumarate_red_D |
| P0A8Q3 | n/a | 1l0v | CE1 | D | 710 | e1l0vP1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Fumarate_red_D |
| P0A8Q3 | n/a | 1l0v | CE1 | O | 812 | e1l0vD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Fumarate_red_D |
| P0A8Q3 | n/a | 1l0v | CE1 | O | 812 | e1l0vP1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Fumarate_red_D |