[A discrete type of potassium channel conductance in snail neurons].
The results of further investigations on a single potential dependent K+ channel are described. It was shown that ionic selectivity of the channel for monovalent ions is too high: Li+, Na+, and Cs+ are practically impermeant ions. Permeability of the channel for Rb+ is approximately 10 times less, and for Tl+ it is 2 times more than permeability for K+. Besides, it was found that open K+ channel has 16 multiple conductance levels.
D000818:Animals; D002463:Cell Membrane Permeability; D007473:Ion Channels / Q000378:metabolism / Q000502:physiology*; D008564:Membrane Potentials; D009474:Neurons / Q000502:physiology*; D012908:Snails / Q000502:physiology*
D007473:Ion Channels
Diskretnyĭ kharakter provodimosti kalievogo kanala v neĭronakh prudovika.