Blocker Facilitates K+ Channel Current
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A hERG Blocker Facilitates K+ Channel Current by Agonizing Pore Opening while Blocking
Many drugs that block voltage-gated K+ channels encoded by the human Ether-a-go-go-Related Gene (hERG) can cause long QT syndrome and life-threatening cardiac arrhythmias, yet the molecular mechanisms that determine this risk remain unclear. A process that may counteract arrhythmogenic hERG block, termed facilitation, is common to many clinically-approved hERG blockers including nifekalant, amiodarone, promethazine, imipramine, nortriptyline, haloperidol, verapamil, carvedilol, metoprolol,...