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Titration of CymA-induced membrane conductance with β-cyclodextrin. The membrane was formed from diphytanoyl phosphatidylcholine/n-decane. The aqueous phase contained 20 ng/ml CymA, 1 M KCl, and β-cyclodextrin at the concentrations shown at the top of the figure. The temperature was 20°C and the applied voltage was 20 mV. Note that the current noise decreased for increasing concentration of β-cyclodextrin.
