Cyclic nucleotide–gated ion channel

Cyclic nucleotide-gated (CNG) ion channels are a type of ion channel that are primarily activated by cyclic nucleotides, such as cyclic adenosine monophosphate (cAMP) and cyclic guanosine monophosphate (cGMP). These channels are critical components in various physiological processes, particularly in sensory transduction, including vision and olfaction.