KCNQ1

Potassium voltage-gated channel subfamily KQT member 1 is a potassium channel protein encoded in the human by the KCNQ1 gene. Its mutation causes long QT syndrome, Kv7.1 is a voltage and lipid-gated potassium channel present in the cell membranes of cardiac tissue and in inner ear neurons among other tissues. In the cardiac cells, Kv7.1 mediates the IKs (or slow delayed rectifying K+) current that contributes to the repolarization of the cell, terminating the cardiac action potential and thereby the heart's contraction. It is a member of the KCNQ family of potassium channels.