| B | ApbE | e2y0cB6 | A: alpha bundles | X: Fusion glycoprotein F2 | H: RIFT-related | T: double psi | F: ApbE | ECOD (develop294) |
| B | Formyl_trans_N | e2y0cB2 | A: alpha bundles | 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: Formyl_trans_N | ECOD (develop294) |
| D | | e2y0cD2 | A: alpha bundles | X: Thioredoxin-like | H: Thioredoxin-like | T: Thioredoxin-like | F: | ECOD (develop294) |
| D | Formyl_trans_N | e2y0cD3 | A: alpha bundles | 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: Formyl_trans_N | ECOD (develop294) |
| C | CN_hydrolase | e2y0cC4 | A: alpha bundles | X: Fusion glycoprotein F2 | H: HTH | T: winged helix domain | F: CN_hydrolase | ECOD (develop294) |
| C | | e2y0cC2 | A: alpha bundles | X: P-loop domains-like | H: P-loop domains-related | T: P-loop containing nucleoside triphosphate hydrolases | F: | ECOD (develop294) |
| A | | e2y0cA2 | A: alpha bundles | X: Thioredoxin-like | H: Thioredoxin-like | T: Thioredoxin-like | F: | ECOD (develop294) |
| A | Formyl_trans_N | e2y0cA3 | A: alpha bundles | 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: Formyl_trans_N | ECOD (develop294) |