ListarFCA_Articles por tema "Positive ions"
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Electrical pumping of potassium ions against an external concentration gradient in a biological ion channel
AIP Publishing (2013-07-22)We show experimentally and theoretically that significant currents can be obtained with a biological ion channel, the OmpF porin of Escherichia coli, using zero-average potentials as driving forces. The channel rectifying ... -
Ion selectivity of a biological channel at high concentration ratio: insights on small ion diffusion and binding
American Chemical Society (2009)The ionic selectivity of the bacterial porin OmpF has been investigated in several chloride salts of alkali metal cations under a wide range of concentration ratios. We report a novel way of studying the several factors ...