| Domain | Name | Category | Type |
| IPR001680 | WD40 repeat | Repeat | Repeat |
| IPR015943 | WD40/YVTN repeat-like-containing domain superfamily | Family | Homologous superfamily |
| IPR019775 | WD40 repeat, conserved site | Site | Conserved site |
| IPR032028 | Cleavage stimulation factor subunit 1, dimerisation domain | Domain | Domain |
| IPR036322 | WD40-repeat-containing domain superfamily | Family | Homologous superfamily |
| IPR038184 | CSTF1, dimerization domain superfamily | Family | Homologous superfamily |
| IPR044633 | Cleavage stimulation factor subunit 1-like | Family | Family |