| D | euk_SelB_III | e5koeD1 | 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: euk_SelB_III | ECOD (v294.1) |
| C | XG_FTase | e5koeC1 | A: a/b three-layered sandwiches | X: 4Fe-4S ferredoxin | H: sensor domains | T: sensor domains | F: XG_FTase | ECOD (v294.1) |
| B | euk_SelB_III | e5koeB1 | 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: euk_SelB_III | ECOD (v294.1) |
| A | euk_SelB_III | e5koeA1 | 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: euk_SelB_III | ECOD (v294.1) |