Molecular function

voltage-gated potassium channel activity involved in atrial cardiomyocyte action potential repolarization

Enables the transmembrane transfer of a potassium ion by a voltage-gated channel through the plasma membrane of an atrial cardiomyocyte contributing to the repolarization phase of an action potential. A voltage-gated channel is a channel whose open state is dependent on the voltage across the membrane in which it is embedded.