Abstract
Ion channels are membrane-spanning protein molecules. They form pores or channels, through which ions flow down their electro- chemical gradients. Channels are characterized by two properties, selectivity and gating. Thus, the pore selects for one or a few ion species, allowing only these to permeate, and the pore can open and close in response to changes in the membrane voltage field, or to the binding of chemical transmitters. Because movement of ions through the pore can be measured by the electrical current they carry, it has been possible to study the functioning of these proteins with high resolution. Channel openings and closings, reflecting changes in protein con- formation, can be detected on the time scale of a few tens of microseconds in some cases, and over the past 10 years, methods allowing study of events in a singlechannel protein molecule have become widely used.
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Standen, N.B., Stanfield, P.R. (1992). Voltage-Gated Ion Channels. In: Longstaff, A., Revest, P. (eds) Protocols in Molecular Neurobiology. Methods in Molecular Biology™, vol 13. Springer, Totowa, NJ. https://doi.org/10.1385/0-89603-199-3:325
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DOI: https://doi.org/10.1385/0-89603-199-3:325
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