Lecture1004final - Classification of channel types In...

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Classification of channel types. In general, channels can be described by: What ion the channel is selective to? Some channels are selective to more than one ion or are non-selective for all cations (but never both cations and anions – why?) . Others are highly selective only for one ion type AND What gates the channel? E.g. An “Acetylcholine-gated sodium channel etc.”
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Even for a single, highly related group of channel genes, coding for one overall type of channel, there can be diversity – each gene will make a channel with particular properties. E.g. voltage-gated potassium channels. There are several related genes in addition to the classic axonal voltage-gated potassium channels, each of which makes a channel with unique gating characteristics.
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4.5 Diverse properties of K + channels. (Part 1)
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4.5 Diverse properties of K + channels. (Part 2)
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4.5 Diverse properties of K + channels. (Part 3)
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4.5 Diverse properties of K + channels. (Part 4)
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Channel structure
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