A subgroup of cyclic nucleotide-regulated ION CHANNELS within the superfamily of pore-loop cation channels. They are expressed in OLFACTORY NERVE cilia and in PHOTORECEPTOR CELLS and some PLANTS. (mesh:D054815)
| Identifier | Name | Relation |
| HGNC:2153 | CNGB3 | isa |
| HGNC:19183 | HCN3 | isa |
| HGNC:16882 | HCN4 | isa |
| HGNC:2152 | CNGA4 | isa |
| HGNC:4846 | HCN2 | isa |
| HGNC:2149 | CNGA2 | isa |
| HGNC:2148 | CNGA1 | isa |
| HGNC:2150 | CNGA3 | isa |
| HGNC:2151 | CNGB1 | isa |
| HGNC:4845 | HCN1 | isa |
| Relation | Identifier | Name |
| isa | FPLX:Voltage_gated_ion_channels | Voltage_gated_ion_channels |