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. 2015 Nov;146(5):387–398. doi: 10.1085/jgp.201511475

Figure 2.

Figure 2.

Macroscopic properties: voltage gating of Cx40 mutant gap junctions. (Left) Gap junction currents (Ij) elicited by a bipolar pulse protocol from HeLa cells transfected with Cx40 mutants: A96S (A), G38D (B), and M163V (C). (Right) Summary plots of normalized gj versus Vj. The continuous black lines represent the best fit of the data to the Boltzmann equation: (A) A96S (Vj,o = 49 mV, gj,min = 0.20, and z = 2.1; n = 5); (B) G38D (Vj,o = 52 mV, gj,min = 0.20, and z = 2.1; n = 7); (C) M163V (Vj,o = 48 mV, gj,min = 0.22, and z = 3.1; n = 10). The dashed gray line corresponds to the Boltzmann fit of Cx40 data (Vj,o = 48 mV, gj,min = 0.24, and z = 3.9; n = 6). Error bars represent means ± SEM.