| D | HTH_3 | e5korD1 | A: a/b three-layered sandwiches | X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | F: HTH_3 | ECOD (v294.1) |
| C | HTH_3 | e5korC1 | A: a/b three-layered sandwiches | X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | F: HTH_3 | ECOD (v294.1) |
| B | HTH_3 | e5korB1 | A: a/b three-layered sandwiches | X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | F: HTH_3 | ECOD (v294.1) |
| A | HTH_3 | e5korA1 | A: a/b three-layered sandwiches | X: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | H: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | T: Sulfite reductase hemoprotein (SiRHP), domains 2 and 4 | F: HTH_3 | ECOD (v294.1) |