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Figure 4 | BMC Plant Biology

Figure 4

From: Oep23 forms an ion channel in the chloroplast outer envelope

Figure 4

PsOep23 is cation selective. Current response of a voltage ramp from −50 to +100 mV (voltage slope: 7.5 mV/s) in asymmetric electrolyte conditions (cis/trans 20/250 mM KCl). Oep23 has a pronounced cation selectivity. The reversal potential (Erev) of +46 mV translates into a permeability ratio of K+: Cl of 15 : 1 by using the GHK equation and activities instead of concentrations.

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