| E2QR97 | DB02832 | 3or1 | SRM | A | 580 | e3or1A1 | Alpha-beta plaits | Sulfite reductase, domains 1 and 3 | Sulfite reductase, domains 1 and 3 | NIR_SIR_ferr |
| E2QR97 | DB02832 | 3or1 | SRM | A | 580 | e3or1A8 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | NIR_SIR |
| E2QR97 | DB02832 | 3or1 | SRM | B | 581 | e3or1A8 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | NIR_SIR |
| E2QR97 | DB02832 | 3or1 | SRM | B | 581 | e3or1A9 | 4Fe-4S ferredoxin | 4Fe-4S ferredoxin | 4Fe-4S ferredoxin | n/a |
| E2QR97 | DB02832 | 3or1 | SRM | D | 582 | e3or1D1 | Alpha-beta plaits | Sulfite reductase, domains 1 and 3 | Sulfite reductase, domains 1 and 3 | NIR_SIR_ferr |
| E2QR97 | DB02832 | 3or1 | SRM | D | 582 | e3or1D8 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | NIR_SIR |
| E2QR97 | DB02832 | 3or1 | SRM | E | 583 | e3or1D2 | 4Fe-4S ferredoxin | 4Fe-4S ferredoxin | 4Fe-4S ferredoxin | n/a |
| E2QR97 | DB02832 | 3or1 | SRM | E | 583 | e3or1D8 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | NIR_SIR |
| E2QR97 | DB02832 | 3or2 | SRM | A | 582 | e3or2A1 | Alpha-beta plaits | Sulfite reductase, domains 1 and 3 | Sulfite reductase, domains 1 and 3 | NIR_SIR_ferr |
| E2QR97 | DB02832 | 3or2 | SRM | A | 582 | e3or2A8 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | NIR_SIR |
| E2QR97 | DB02832 | 3or2 | SRM | B | 581 | e3or2A2 | 4Fe-4S ferredoxin | 4Fe-4S ferredoxin | 4Fe-4S ferredoxin | n/a |
| E2QR97 | DB02832 | 3or2 | SRM | B | 581 | e3or2A8 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | NIR_SIR |
| E2QR97 | DB02832 | 3or2 | SRM | D | 584 | e3or2D1 | Alpha-beta plaits | Sulfite reductase, domains 1 and 3 | Sulfite reductase, domains 1 and 3 | NIR_SIR_ferr |
| E2QR97 | DB02832 | 3or2 | SRM | D | 584 | e3or2D8 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | NIR_SIR |
| E2QR97 | DB02832 | 3or2 | SRM | E | 583 | e3or2D2 | 4Fe-4S ferredoxin | 4Fe-4S ferredoxin | 4Fe-4S ferredoxin | n/a |
| E2QR97 | DB02832 | 3or2 | SRM | E | 583 | e3or2D8 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | NIR_SIR |