| Domain | Name | Category | Type |
| IPR002189 | F-actin-capping protein subunit alpha | Family | Family |
| IPR017865 | F-actin capping protein, alpha subunit, conserved site | Site | Conserved site |
| IPR037282 | F-actin-capping protein subunit alpha/beta | Family | Homologous superfamily |
| IPR042276 | F-actin-capping protein subunit alpha/beta, domain 2 | Family | Homologous superfamily |
| IPR042489 | F-actin capping protein, alpha subunit, domain 1 | Family | Homologous superfamily |