Ion channels: Difference between revisions
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[[Image:1qrq1.png|left|200px|thumb|Crystal structure of voltage-dependent potassium channel, [[1qrq]]]] | [[Image:1qrq1.png|left|200px|thumb|Crystal structure of voltage-dependent potassium channel, [[1qrq]]]] | ||
{{STRUCTURE_1qrq| PDB=1qrq | SIZE= | {{STRUCTURE_1qrq| PDB=1qrq | SIZE=400| SCENE=Ion_channels/Cv/1 |right|CAPTION=voltage-dependent potassium channel, [[1qrq]] }} | ||
[[Ion channels]] are membrane proteins that catalyze the passive transport of ions through the cell membrane. Most ion channels are specific to an ion, like the [[sodium channels]], or the [[chloride channels]]. Some, like the [[TRP channels]], let through various cations. Another property of ion channels is that they can be either driven by voltage or concentration gradients, or they can be gated (by voltage, ligands, touch and other sensory signal). [[Potassium Channel|Potassium channels]] (KCh) are subdivided to voltage-gated KCh and calcium-dependent KCh. The latter are subdivided into high- (BK, LKCa), intermediate- and small-conductance KCh (human SK1, rat SK2, SKCa). | [[Ion channels]] are membrane proteins that catalyze the passive transport of ions through the cell membrane. Most ion channels are specific to an ion, like the [[sodium channels]], or the [[chloride channels]]. Some, like the [[TRP channels]], let through various cations. Another property of ion channels is that they can be either driven by voltage or concentration gradients, or they can be gated (by voltage, ligands, touch and other sensory signal). [[Potassium Channel|Potassium channels]] (KCh) are subdivided to voltage-gated KCh and calcium-dependent KCh. The latter are subdivided into high- (BK, LKCa), intermediate- and small-conductance KCh (human SK1, rat SK2, SKCa). | ||