title: Do protons block Na+ channels by binding to a site outside the pore?
mesh_terms: D000818:Animals; D002463:Cell Membrane Permeability; D006863:Hydrogen-Ion Concentration; D007473:Ion Channels / Q000502:physiology*; D007700:Kinetics; D008564:Membrane Potentials; D008954:Models, Biological; D009132:Muscles / Q000502:physiology; D011898:Ranidae; D012964:Sodium / Q000378:metabolism*
chemical_list: D007473:Ion Channels; D012964:Sodium