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About: Calcium-activated potassium channel     Goto   Sponge   NotDistinct   Permalink

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Type: yago:Abstraction100002137yago:Act100030358yago:Channel106259898yago:Communication106252138yago:Event100029378yago:PsychologicalFeature100023100yago:WikicatIonChannelsyago:YagoPermanentlyLocatedEntitytelevision stationyago:Transmission106251781 New Facet based on Instances of this Class

Calcium-activated potassium channels are potassium channels gated by calcium, or that are structurally or phylogenetically related to calcium gated channels. They were first discovered in 1958 by Gardos who saw that calcium levels inside of a cell could affect the permeability of potassium through that cell membrane. Then in 1970, Meech was the first to observe that intracellular calcium could trigger potassium currents. In humans they are divided into three subtypes: large conductance or BK channels, which have very high conductance which range from 100 to 300 pS, intermediate conductance or IK channels, with intermediate conductance ranging from 25 to 100 pS, and small conductance or SK channels with small conductances from 2-25 pS.