label: voltage-gated potassium channel activity involved in atrial cardiac muscle cell action potential repolarization
label_lc: voltage-gated potassium channel activity involved in atrial cardiac muscle cell action potential repolarization
description: "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."