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Membrane dipole potential modulates proton conductance through gramicidin channel: Movement of negative ionic defects inside the channel
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ABSTRACT The effect of membrane dipole potential on gramicidin channel activity in bilayer lipid membranes (BLMs) was studied. Remarkably, it appeared that proton conductance of gramicidin A (gA) channels responded to modulation of the dipole potential oppositely as compared with gA alkali metal cation conductance. In particular, the addition of phloretin, known to reduce the membrane dipole potential, resulted in a decrease in gA proton conductance, on one hand, and an increase in gA alkali metal conductance, on the other hand, whereas 6-ketocholestanol, the agent raising the membrane dipole ...
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Transcript from: Congressional Testimony
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Transcript from: Nightly Business Report
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 "The O'Reilly Factor (Fox News Network)")
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Transcript from: The O'Reilly Factor (Fox News Network)
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Transcript from: NPR Weekend Edition - Saturday
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Transcript from: Congressional Testimony
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Transcript from: NPR Morning Edition
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Transcript from: Washington Transcript Service
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