Protein
Cyclic nucleotide-gated cation channel alpha-4
Organism
Rattus norvegicus
Function
Second messenger, cAMP, causes the opening of cation-selective cyclic nucleotide-gated (CNG) channels and depolarization of the neuron (olfactory sensory neurons, OSNs). CNGA4 is the modulatory subunit of this channel which is known to play a central role in the transduction of odorant signals and subsequent adaptation. By accelerating the calcium-mediated negative feedback in olfactory signaling it allows rapid adaptation to odor stimulation and extends its range of odor detection (By similarity).
Similarity
Belongs to the cyclic nucleotide-gated cation channel (TC 1.A.1.5) family. CNGA4 subfamily.
Sequence
MSQDGKVKTTESTPPAPTKARKWLPVLDPSGDYYYWWLNTMVFPIMYNLIIVVCRACFPDLQHSYLVAWFVLDYTSDLLYLLDIGVRFHTGFLEQGILVVDKGMIASRYVRTWSFLLDLASLVPTDAAYVQLGPHIPTLRLNRFLRVPRLFEAFDRTETRTAYPNAFRIAKLMLYIFVVIHWNSCLYFALSRYLGFGRDAWVYPDPAQPGFERLRRQYLYSFYFSTLILTTVGDTPLPDREEEYLFMVGDFLLAVMGFATIMGSMSSVIYNMNTADAAFYPDHALVKKYMKLQHVNKRLERRVIDWYQHLQINKKMTNEVAILQHLPERLRAEVAVSVHLSTLSRVQIFQNCEASLLEELVLKLQPQTYSPGEYVCRKGDIGREMYIIREGQLAVVADDGVTQYAVLGAGLYFGEISIINIKGNMSGNRRTANIKSLGYSDLFCLSKEDLREVLSEYPQAQAVMEEKGREILLKMNKLDVNAEAAEIALQEATESRLKGLDQQLDDLQTKFARLLAELESSALKIAYRIERLEWQTREWPMPEDMGEADDEAEPGEGTSKDGEGKAGQAGPSGIE