| C | tRNA-synt_2b | e2i4nC1 | A: a+b three layers | X: Class II aaRS and biotin synthetases (From Topology) | H: Class II aaRS and biotin synthetases (From Topology) | T: Class II aaRS and biotin synthetases | F: tRNA-synt_2b | ECOD (1.6) |
| C | HGTP_anticodon | e2i4nC2 | A: a/b three-layered sandwiches | X: Anticodon-binding domain of Class II aaRS (From Topology) | H: Anticodon-binding domain of Class II aaRS (From Topology) | T: Anticodon-binding domain of Class II aaRS | F: HGTP_anticodon | ECOD (1.6) |
| B | tRNA-synt_2b | e2i4nB1 | A: a+b three layers | X: Class II aaRS and biotin synthetases (From Topology) | H: Class II aaRS and biotin synthetases (From Topology) | T: Class II aaRS and biotin synthetases | F: tRNA-synt_2b | ECOD (1.6) |
| B | HGTP_anticodon | e2i4nB2 | A: a/b three-layered sandwiches | X: Anticodon-binding domain of Class II aaRS (From Topology) | H: Anticodon-binding domain of Class II aaRS (From Topology) | T: Anticodon-binding domain of Class II aaRS | F: HGTP_anticodon | ECOD (1.6) |
| A | tRNA-synt_2b | e2i4nA1 | A: a+b three layers | X: Class II aaRS and biotin synthetases (From Topology) | H: Class II aaRS and biotin synthetases (From Topology) | T: Class II aaRS and biotin synthetases | F: tRNA-synt_2b | ECOD (1.6) |
| A | HGTP_anticodon | e2i4nA2 | A: a/b three-layered sandwiches | X: Anticodon-binding domain of Class II aaRS (From Topology) | H: Anticodon-binding domain of Class II aaRS (From Topology) | T: Anticodon-binding domain of Class II aaRS | F: HGTP_anticodon | ECOD (1.6) |