Channel 4 | Discovery Channel | Disney Channel | National Geographic Channel | English Channel | Nickelodeon (TV channel) | Fox News Channel | Channel Islands | History (U.S. TV channel) | Travel Channel | Clear Channel Communications | TLC (TV channel) | Channel Tunnel | virtual channel | Channel Islands of California | The Weather Channel | The Filipino Channel | The History Channel | Mega Channel | Hallmark Channel | YTV (TV channel) | TNT (TV channel) | List of Disney Channel Original Movies | Bristol Channel | AMC (TV channel) | Discovery Health Channel | The Weather Channel (United States) | television channel | Channel V | Spike (TV channel) |
cAMP also binds to and regulates the function of ion channels such as the HCN channels and a few other cyclic nucleotide-binding proteins such as Epac1 and RAPGEF2.