| D | HTH_3 | e5kopD1 | A: beta barrels | 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 (v294.2) |
| C | HTH_3 | e5kopC1 | A: beta barrels | 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 (v294.2) |
| B | HTH_3 | e5kopB1 | A: beta barrels | 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 (v294.2) |
| A | Amidohydro_3 | e5kopA1 | A: beta barrels | X: Repetitive alpha hairpins | H: ARM repeat | T: ARM repeat | F: Amidohydro_3 | ECOD (v294.2) |