E1C/R4E+KCNE1 currents after superfusion of MTSES⁻ or MTSET⁺. (A, left) The same pulse protocol was used as in Fig. 5 A. Scale, 5 µA. (Middle) Peak current amplitudes plotted against time. (Right) Normalized peak current amplitude after various MTS treatments. Error bars represent standard error of the means. (B; left) E1C/R1Q+KCNE1 currents after superfusion of MTSES⁻ or MTSET⁺. The same pulse protocol was used as in A. Scale: top, 5 µA; bottom, 2 µA. (Middle) Peak current amplitudes plotted against time. (Right) Normalized peak current amplitude after various MTS treatments. Error bars represent standard error of the means.