| PF00941 | FAD binding domain in molybdopterin dehydrogenase (FAD_binding_5) | FAD binding domain in molybdopterin dehydrogenase | | Domain |
| PF01315 | Aldehyde oxidase and xanthine dehydrogenase, a/b hammerhead domain (Ald_Xan_dh_C) | Aldehyde oxidase and xanthine dehydrogenase, a/b hammerhead domain | | Domain |
| PF01799 | [2Fe-2S] binding domain (Fer2_2) | [2Fe-2S] binding domain | | Domain |
| PF20256 | Molybdopterin cofactor-binding domain (MoCoBD_2) | Molybdopterin cofactor-binding domain | | Domain |
| PF03450 | CO dehydrogenase flavoprotein C-terminal domain (CO_deh_flav_C) | CO dehydrogenase flavoprotein C-terminal domain | | Domain |
| PF02738 | Molybdopterin cofactor-binding domain (MoCoBD_1) | Molybdopterin cofactor-binding domain | | Domain |
| PF00111 | 2Fe-2S iron-sulfur cluster binding domain (Fer2) | 2Fe-2S iron-sulfur cluster binding domain | | Domain |