| Domain | Name | Category | Type |
| IPR000674 | Aldehyde oxidase/xanthine dehydrogenase, a/b hammerhead | Domain | Domain |
| IPR001041 | 2Fe-2S ferredoxin-type iron-sulfur binding domain | Domain | Domain |
| IPR002346 | Molybdopterin dehydrogenase, FAD-binding | Domain | Domain |
| IPR002888 | [2Fe-2S]-binding | Domain | Domain |
| IPR005107 | CO dehydrogenase flavoprotein, C-terminal | Domain | Domain |
| IPR006058 | 2Fe-2S ferredoxin, iron-sulphur binding site | Site | Binding site |
| IPR008274 | Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding | Domain | Domain |
| IPR014313 | Aldehyde oxidase | Family | Family |
| IPR016166 | FAD-binding domain, PCMH-type | Domain | Domain |
| IPR016208 | Aldehyde oxidase/xanthine dehydrogenase | Family | Family |
| IPR022407 | Oxidoreductase, molybdopterin binding site | Site | Binding site |
| IPR036010 | 2Fe-2S ferredoxin-like superfamily | Family | Homologous superfamily |
| IPR036318 | FAD-binding, type PCMH-like superfamily | Family | Homologous superfamily |
| IPR036683 | CO dehydrogenase flavoprotein, C-terminal domain superfamily | Family | Homologous superfamily |
| IPR036856 | Aldehyde oxidase/xanthine dehydrogenase, a/b hammerhead superfamily | Family | Homologous superfamily |
| IPR036884 | [2Fe-2S]-binding domain superfamily | Family | Homologous superfamily |
| IPR037165 | Aldehyde oxidase/xanthine dehydrogenase, molybdopterin binding domain superfamily | Family | Homologous superfamily |