| Domain | Name | Category | Type |
| IPR001054 | Adenylyl cyclase class-3/4/guanylyl cyclase | Domain | Domain |
| IPR011644 | Heme NO-binding | Domain | Domain |
| IPR011645 | Haem NO binding associated | Domain | Domain |
| IPR018297 | Adenylyl cyclase class-4/guanylyl cyclase, conserved site | Site | Conserved site |
| IPR024096 | NO signalling/Golgi transport ligand-binding domain superfamily | Family | Homologous superfamily |
| IPR029787 | Nucleotide cyclase | Family | Homologous superfamily |
| IPR038158 | H-NOX domain superfamily | Family | Homologous superfamily |
| IPR042463 | Haem NO binding associated domain superfamily | Family | Homologous superfamily |