Cell membrane glycoproteins that are selectively permeable to potassium ions. At least eight major groups of K channels exist and they are made up of dozens of different subunits. (mesh:D015221)
| Synonym | Reference | Specificity |
| Potassium channels | Exact | |
| Potassium channel | Exact | |
| potassium channels | Exact | |
| potassium channel | Exact |
| Identifier | Name | Relation |
| FPLX:KCNJ | KCNJ | isa |
| FPLX:Potassium_voltage_gated_channels | Potassium_voltage_gated_channels | isa |
| FPLX:KCNK | KCNK | isa |
| FPLX:KCNT | KCNT | isa |
| FPLX:Potassium_calcium_activated_channels | Potassium_calcium_activated_channels | isa |
| Relation | Identifier | Name |
| isa | FPLX:Cation_channels | Cation_channels |