| Q76KA9 | n/a | 3b0h | CL | A | 605 | e3b0hA2 | Alpha-beta plaits | Sulfite reductase, domains 1 and 3 | Sulfite reductase, domains 1 and 3 | NIR_SIR_ferr |
| Q76KA9 | n/a | 3b0h | CL | A | 605 | e3b0hA3 | 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 |
| Q76KA9 | n/a | 3b0h | CL | B | 605 | e3b0hB11 | 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 |
| Q76KA9 | n/a | 3b0h | CL | B | 605 | e3b0hB13 | Alpha-beta plaits | Sulfite reductase, domains 1 and 3 | Sulfite reductase, domains 1 and 3 | NIR_SIR_ferr |