Maxi K+ channels in leaky epithelia are regulated by intracellular Ca2+, pH and membrane potential


We have studied a Ca2+-activated K+ channel in the ventricular membrane of the epithelium of choroid plexus by means of the patch-clamp technique, using excised inside-out patches. The channel was highly K+ selective. It had a conductance of ∼200 pS with 112 mM KCl on both sides of the membrane. The probability for the channel being open increased with… (More)
DOI: 10.1007/BF02181467


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