| I2WBK2 | DB08690 | 7jz2 | UQ2 | D | 202 | e7jz2D1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Sdh_cyt |
| I2WBK2 | DB08690 | 7jz2 | UQ2 | H | 1201 | e7jz2H1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Sdh_cyt |
| I2WBK2 | DB08690 | 7jz2 | UQ2 | L | 1201 | e7jz2L1 | Transmembrane heme-binding four-helical bundle | Transmembrane heme-binding four-helical bundle | Fumarate reductase respiratory complex transmembrane subunits | Sdh_cyt |