domain:The segment S4 is probably the voltage-sensor and is characterized by a series of positively charged amino acids at every third position.,function:Putative hyperpolarization-activated ion channel exhibiting weak selectivity for potassium over sodium ions.,similarity:Belongs to the potassium channel HCN family.,similarity:Contains 1 cyclic nucleotide-binding domain.,subunit:The potassium channel is probably composed of a homo- or heterotetrameric complex of pore-forming subunits.,
Cell membrane ; Multi-pass membrane protein .
Detected in brain.
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