sentence: Representative traces for both hVDAC3 and mVDAC1 with their corresponding I / V ( current – voltage ) plots are shown in Fig. 2 A. For hVDAC3 , the reversal potential ( the voltage corresponding to zero current ) is 4.4 ± 1.4 mV ( n = 5 ; Ψ , indicated by green circles ) , which corresponds to a permeability ratio P − / P = 1.3 ± 0.1 .