| Q9L869 | n/a | 1e3d | FSX | A | 269 | e1e3dA1 | Fe-S cluster-binding domain in nickel-iron hydrogenase small subunit | Fe-S cluster-binding domain in nickel-iron hydrogenase small subunit | Fe-S cluster-binding domain in nickel-iron hydrogenase small subunit | NiFe_hyd_SSU_C |
| Q9L869 | n/a | 1e3d | FSX | A | 269 | e1e3dA2 | Flavodoxin-like | Class I glutamine amidotransferase-like | CheY-like | Oxidored_q6 |
| Q9L869 | n/a | 1e3d | FSX | C | 269 | e1e3dC1 | Fe-S cluster-binding domain in nickel-iron hydrogenase small subunit | Fe-S cluster-binding domain in nickel-iron hydrogenase small subunit | Fe-S cluster-binding domain in nickel-iron hydrogenase small subunit | NiFe_hyd_SSU_C |
| Q9L869 | n/a | 1e3d | FSX | C | 269 | e1e3dC2 | Flavodoxin-like | Class I glutamine amidotransferase-like | CheY-like | Oxidored_q6 |