| E [auth F] | Fer4_7 | e5t5mF2 | A: a+b two layers | X: 4Fe-4S ferredoxin (From Topology) | H: 4Fe-4S ferredoxin (From Topology) | T: 4Fe-4S ferredoxin | F: Fer4_7 | ECOD (1.6) |
| E [auth F] | Fer4_21_1 | e5t5mF1 | A: a+b two layers | X: 4Fe-4S ferredoxin (From Topology) | H: 4Fe-4S ferredoxin (From Topology) | T: 4Fe-4S ferredoxin | F: Fer4_21_1 | ECOD (1.6) |
| F [auth G] | Fer4_21_1 | e5t5mG1 | A: a+b two layers | X: 4Fe-4S ferredoxin (From Topology) | H: 4Fe-4S ferredoxin (From Topology) | T: 4Fe-4S ferredoxin | F: Fer4_21_1 | ECOD (1.6) |
| D | Molydop_binding_1 | e5t5mD1 | A: beta barrels | X: cradle loop barrel | H: RIFT-related | T: double psi | F: Molydop_binding_1 | ECOD (1.6) |
| C | GXGXG | e5t5mC1 | A: beta duplicates or obligate multimers | X: Single-stranded right-handed beta-helix | H: Alpha subunit of glutamate synthase-C (From Topology) | T: Alpha subunit of glutamate synthase-C | F: GXGXG | ECOD (1.6) |
| B | Molybdopterin_2nd,Molybdop_Fe4S4_1 | e5t5mB2 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Formate dehydrogenase/DMSO reductase, domains 2 and 3 (From Topology) | T: Formate dehydrogenase/DMSO reductase, domains 2 and 3 | F: Molybdopterin_2nd,Molybdop_Fe4S4_1 | ECOD (1.6) |
| B | Molybdopterin_1st_1 | e5t5mB1 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Formate dehydrogenase/DMSO reductase, domains 2 and 3 (From Topology) | T: Formate dehydrogenase/DMSO reductase, domains 2 and 3 | F: Molybdopterin_1st_1 | ECOD (1.6) |
| A | FwdA | e5t5mA2 | A: beta sandwiches | X: Composite domain of metallo-dependent hydrolases (From Topology) | H: Composite domain of metallo-dependent hydrolases (From Topology) | T: Composite domain of metallo-dependent hydrolases | F: FwdA | ECOD (1.6) |
| A | Amidohydro_1_N | e5t5mA1 | A: a/b barrels | X: TIM beta/alpha-barrel | H: TIM barrels (From Topology) | T: TIM barrels | F: Amidohydro_1_N | ECOD (1.6) |