| Domain | Name | Category | Type |
| IPR000009 | Protein phosphatase 2A regulatory subunit PR55 | Family | Family |
| IPR001680 | WD40 repeat | Repeat | Repeat |
| IPR015943 | WD40/YVTN repeat-like-containing domain superfamily | Family | Homologous superfamily |
| IPR018067 | Protein phosphatase 2A regulatory subunit PR55, conserved site | Site | Conserved site |
| IPR019775 | WD40 repeat, conserved site | Site | Conserved site |
| IPR036322 | WD40-repeat-containing domain superfamily | Family | Homologous superfamily |