Fig 3.

Functional properties of the grapevine channel VvK5.1 when expressed in Xenopus laevis oocytes. (A) Dependence of VvK5.1-normalized mean currents upon external pH in 10 mM K⁺; n=8 ±SE. Normalization was conducted by setting the currents at +50 mV in the standard solution (pH 6.5) to 100%. The current is reduced upon acidification of the external bath solution. (B) Inhibition of VvK5.1-mediated normalized currents by 10 mM BaCl (n=11 ±SD) or TEA (n=5 ±SD) in an external solution of 10 mM K⁺ at pH 7.4. Inhibition is shown as a percentage of control currents (n=16).