| Q5ZIS0 | DB18267 | 1yq3 | HEM | C | 143 | e1yq3D1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 1yq4 | HEM | C | 143 | e1yq4D1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 2fbw | HEM | C | 201 | e2fbwD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 2fbw | HEM | P | 201 | e2fbwQ1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 2h88 | HEM | C | 142 | e2h88D1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 2h88 | HEM | P | 201 | e2h88Q1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 2h89 | HEM | C | 142 | e2h89D1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 2wqy | HEM | C | 143 | e2wqyD3 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 2wqy | HEM | P | 201 | e2wqyQ1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 6myo | HEM | C | 201 | e6myoD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 6myp | HEM | C | 201 | e6mypD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 6myq | HEM | C | 201 | e6myqD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 6myr | HEM | C | 201 | e6myrD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 6mys | HEM | C | 201 | e6mysD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 6myt | HEM | C | 201 | e6mytD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |
| Q5ZIS0 | DB18267 | 6myu | HEM | C | 201 | e6myuD1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | CybS |