| Domain | Name | Category | Type |
| IPR005399 | Potassium channel, voltage-dependent, beta subunit, KCNAB-related | Family | Family |
| IPR005401 | Potassium channel, voltage-dependent, beta subunit, KCNAB2 | Family | Family |
| IPR005983 | Potassium channel, voltage-dependent, beta subunit, KCNAB | Family | Family |
| IPR023210 | NADP-dependent oxidoreductase domain | Domain | Domain |
| IPR036812 | NADP-dependent oxidoreductase domain superfamily | Family | Homologous superfamily |