| Domain | Name | Category | Type |
| IPR000738 | WHEP-TRS domain | Domain | Domain |
| IPR000924 | Glutamyl/glutaminyl-tRNA synthetase | Family | Family |
| IPR001412 | Aminoacyl-tRNA synthetase, class I, conserved site | Site | Conserved site |
| IPR002314 | Aminoacyl-tRNA synthetase, class II (G/ P/ S/T) | Domain | Domain |
| IPR004046 | Glutathione S-transferase, C-terminal | Domain | Domain |
| IPR004154 | Anticodon-binding | Domain | Domain |
| IPR004499 | Proline-tRNA ligase, class IIa, archaeal-type | Family | Family |
| IPR004526 | Glutamyl-tRNA synthetase, archaeal/eukaryotic cytosolic | Family | Family |
| IPR006195 | Aminoacyl-tRNA synthetase, class II | Domain | Domain |
| IPR009068 | S15/NS1, RNA-binding | Family | Homologous superfamily |
| IPR011035 | Ribosomal protein L25/Gln-tRNA synthetase, anti-codon-binding domain superfamily | Family | Homologous superfamily |
| IPR014729 | Rossmann-like alpha/beta/alpha sandwich fold | Family | Homologous superfamily |
| IPR016061 | Proline-tRNA ligase, class II, C-terminal | Domain | Domain |
| IPR017449 | Prolyl-tRNA synthetase, class II | Family | Homologous superfamily |
| IPR020056 | Ribosomal protein L25/Gln-tRNA synthetase, N-terminal | Family | Homologous superfamily |
| IPR020058 | Glutamyl/glutaminyl-tRNA synthetase, class Ib, catalytic domain | Domain | Domain |
| IPR020059 | Glutamyl/glutaminyl-tRNA synthetase, class Ib, anti-codon binding domain | Domain | Domain |
| IPR033721 | Prolyl-tRNA synthetase, catalytic domain | Domain | Domain |
| IPR036282 | Glutathione S-transferase, C-terminal domain superfamily | Family | Homologous superfamily |
| IPR036621 | Anticodon-binding domain superfamily | Family | Homologous superfamily |