| Domain | Name | Category | Type |
| IPR006093 | Oxygen oxidoreductase covalent FAD-binding site | Site | Binding site |
| IPR006094 | FAD linked oxidase, N-terminal | Domain | Domain |
| IPR007173 | D-arabinono-1,4-lactone oxidase | Domain | Domain |
| IPR010031 | L-gulonolactone/D-arabinono-1,4-lactone oxidase | Family | Family |
| IPR016166 | FAD-binding domain, PCMH-type | Domain | Domain |
| IPR016167 | FAD-binding, type PCMH, subdomain 1 | Family | Homologous superfamily |
| IPR016169 | FAD-binding, type PCMH, subdomain 2 | Family | Homologous superfamily |
| IPR030654 | Sugar 1,4-lactone oxidase | Family | Family |
| IPR036318 | FAD-binding, type PCMH-like superfamily | Family | Homologous superfamily |