Ion channels: Difference between revisions
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Created page with 'There are three types of ion channels: 1)Voltage-Gated ion channels e.g. Na<sup>+</sup> and K<sup>+ </sup>channels found in nerve and muscle cells 2)Ligand Gated ion …' |
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There are three types of ion channels: | There are three types of ion channels: | ||
1)Voltage-Gated ion channels | 1) Voltage-Gated ion channels | ||
e.g. Na<sup>+</sup> and K<sup>+ </sup>channels found in nerve and muscle cells | e.g. Na<sup>+</sup> and K<sup>+ </sup>channels found in nerve and muscle cells | ||
2)Ligand Gated ion channels | 2) Ligand Gated ion channels | ||
e.g. nAch receptor | e.g. nAch receptor | ||
3)Intracellular messenger-gated ion channels | 3) Intracellular messenger-gated ion channels<br> | ||
<br> | |||
By measuring the current of a single ion channel in a single cell we can learn three things: The conductance of the channel, the open state probability of the channel, and the selectivity of the channel (i.e. which ions move across the channel).<br> | By measuring the current of a single ion channel in a single cell we can learn three things: The conductance of the channel, the open state probability of the channel, and the selectivity of the channel (i.e. which ions move across the channel).<br> | ||
Revision as of 14:42, 14 November 2010
There are three types of ion channels:
1) Voltage-Gated ion channels
e.g. Na+ and K+ channels found in nerve and muscle cells
2) Ligand Gated ion channels
e.g. nAch receptor
3) Intracellular messenger-gated ion channels
By measuring the current of a single ion channel in a single cell we can learn three things: The conductance of the channel, the open state probability of the channel, and the selectivity of the channel (i.e. which ions move across the channel).