Voltage-dependent nitrendipine binding to cardiac sarcolemmal vesicles.

Abstract

The binding of the calcium channel antagonist [3H]nitrendipine (3[H]Ntd) to purified bovine cardiac sarcolemmal vesicles was examined at different membrane potentials. The vesicles were loaded with 150 mM K and exposed to a range of external K concentrations to induce negative internal membrane potentials using N-methyl-D-glucamine or choline to substitute… (More)

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