| Domain | Name | Category | Type |
| IPR002048 | EF-hand domain | Domain | Domain |
| IPR010255 | Haem peroxidase superfamily | Family | Homologous superfamily |
| IPR011992 | EF-hand domain pair | Family | Homologous superfamily |
| IPR013112 | FAD-binding 8 | Domain | Domain |
| IPR013121 | Ferric reductase, NAD binding domain | Domain | Domain |
| IPR013130 | Ferric reductase transmembrane component-like domain | Domain | Domain |
| IPR017927 | FAD-binding domain, ferredoxin reductase-type | Domain | Domain |
| IPR017938 | Riboflavin synthase-like beta-barrel | Family | Homologous superfamily |
| IPR018247 | EF-Hand 1, calcium-binding site | Site | Binding site |
| IPR019791 | Haem peroxidase, animal-type | Family | Family |
| IPR034818 | Dual oxidase 2 | Family | Family |
| IPR034821 | Dual oxidase, peroxidase domain | Domain | Domain |
| IPR037120 | Haem peroxidase domain superfamily, animal type | Family | Homologous superfamily |
| IPR039261 | Ferredoxin-NADP reductase (FNR), nucleotide-binding domain | Family | Homologous superfamily |