| Domain | Name | Category | Type |
| IPR002314 | Aminoacyl-tRNA synthetase, class II (G/ P/ S/T) | Domain | Domain |
| IPR002317 | Serine-tRNA ligase, type1 | Family | Family |
| IPR006195 | Aminoacyl-tRNA synthetase, class II | Domain | Domain |
| IPR010978 | Class I and II aminoacyl-tRNA synthetase, tRNA-binding arm | Family | Homologous superfamily |
| IPR033729 | Serine-tRNA ligase catalytic core domain | Domain | Domain |
| IPR042103 | Serine-tRNA synthetase, type1, N-terminal domain superfamily | Family | Homologous superfamily |