Figure 3.

Current-voltage dependence of warnericin RK in multichannel experiments. Warnericin RK was added in a concentration of 0.4 μM to the 1 M KCl solution bathing a black DPPC/n-decane membrane. Then, 20 min after the addition of the peptide, most of the conductance increase was over and voltages of positive and negative sign were applied to the membrane (T = 20°C). Note that a linear current voltage curve was obtained in the experiments, indicating that the warnericin RK-induced conductance was not voltage-dependent.