Figure 4.
i
Ca’s through the InsP3R channel under various asymmetric ionic conditions. Error bars show SEM. The number of measurements performed for each ionic condition is tabulated next to the corresponding data point. The line is the linear fit to the data points in 140 mM KCl, 0 mM [Mg2+]f, and 3 µM [Ca2+]i, with slope of 0.30 ± 0.02 pA/mM.