Block of cardiac ATP-sensitive K+ channels by external divalent cations is modulated by...

Investigates the interactions between extracellular divalent cations and the adenosine triphosphatase-sensitive potassium channel. Blocking of current by extracellularly applied cobalt, cadmium and zinc cations; Concentrations; Whole-cell patch clamping conditions; Dependency of blockage on intracellular ATP concentrations; Conformational change of channel protein.