| Domain | Name | Category | Type |
| IPR001680 | WD40 repeat | Repeat | Repeat |
| IPR007319 | Small-subunit processome, Utp21 | Domain | Domain |
| IPR015943 | WD40/YVTN repeat-like-containing domain superfamily | Family | Homologous superfamily |
| IPR019775 | WD40 repeat, conserved site | Site | Conserved site |
| IPR024977 | Anaphase-promoting complex subunit 4, WD40 domain | Domain | Domain |
| IPR036322 | WD40-repeat-containing domain superfamily | Family | Homologous superfamily |