| Domain | Name | Category | Type |
| IPR001900 | Ribonuclease II/R | Domain | Domain |
| IPR002716 | PIN domain | Domain | Domain |
| IPR012340 | Nucleic acid-binding, OB-fold | Family | Homologous superfamily |
| IPR022966 | Ribonuclease II/R, conserved site | Site | Conserved site |
| IPR029060 | PIN-like domain superfamily | Family | Homologous superfamily |
| IPR033770 | Exosome complex exonuclease RRP44, S1 domain | Domain | Domain |
| IPR033771 | Rrp44-like cold shock domain | Domain | Domain |
| IPR041505 | Dis3-like cold-shock domain 2 | Domain | Domain |