| Domain | Name | Category | Type |
| IPR006676 | tRNA-splicing endonuclease | Family | Family |
| IPR006677 | tRNA intron endonuclease, catalytic domain-like | Domain | Domain |
| IPR006678 | tRNA intron endonuclease, N-terminal | Domain | Domain |
| IPR011856 | tRNA endonuclease-like domain superfamily | Family | Homologous superfamily |
| IPR016589 | tRNA-splicing endonuclease, SEN2 subunit | Family | Family |
| IPR036167 | tRNA intron endonuclease, catalytic domain-like superfamily | Family | Homologous superfamily |