| F | Flavodoxin_2 | e4v1xF1 | A: a/b three-layered sandwiches | X: Anticodon-binding domain of Class II aaRS | H: Anticodon-binding domain of Class II aaRS | T: Anticodon-binding domain of Class II aaRS | F: Flavodoxin_2 | ECOD (v294.1) |
| E | PDEase_I | e4v1xE2 | A: a/b three-layered sandwiches | X: PDEase-like | H: HD-domain/PDEase-like | T: HD-domain/PDEase-like | F: PDEase_I | ECOD (v294.1) |
| E | FecCD | e4v1xE1 | A: a/b three-layered sandwiches | X: Type II ABC importer transmembrane domain fold | H: Type II ABC importer transmembrane domain fold | T: Type II ABC importer transmembrane domain fold | F: FecCD | ECOD (v294.1) |
| D | Flavodoxin_2 | e4v1xD1 | A: a/b three-layered sandwiches | X: Anticodon-binding domain of Class II aaRS | H: Anticodon-binding domain of Class II aaRS | T: Anticodon-binding domain of Class II aaRS | F: Flavodoxin_2 | ECOD (v294.1) |
| C | Flavodoxin_2 | e4v1xC1 | A: a/b three-layered sandwiches | X: Anticodon-binding domain of Class II aaRS | H: Anticodon-binding domain of Class II aaRS | T: Anticodon-binding domain of Class II aaRS | F: Flavodoxin_2 | ECOD (v294.1) |
| B | Flavodoxin_2 | e4v1xB1 | A: a/b three-layered sandwiches | X: Anticodon-binding domain of Class II aaRS | H: Anticodon-binding domain of Class II aaRS | T: Anticodon-binding domain of Class II aaRS | F: Flavodoxin_2 | ECOD (v294.1) |
| A | Flavodoxin_2 | e4v1xA1 | A: a/b three-layered sandwiches | X: Anticodon-binding domain of Class II aaRS | H: Anticodon-binding domain of Class II aaRS | T: Anticodon-binding domain of Class II aaRS | F: Flavodoxin_2 | ECOD (v294.1) |
| A | Fer4, Fer4_7, Fer4_10 | e4v1xA2 | A: a/b three-layered sandwiches | X: Rossmann-like | H: Rossmann-related | T: Aha1/BPI domain-like | F: Fer4, Fer4_7, Fer4_10 | ECOD (v294.1) |