Biophysical characterization of the short QT mutation hERG-N588K reveals a mixed gain-and loss-of-function.

Abstract excerpt

The short QT syndrome is a newly discovered pro-arrhythmic condition, which may cause ventricular fibrillation and sudden death. Short QT can originate from the apparent gain-of-function mutation N588K in the hERG potassium channel that conducts repolarising I(Kr) current. The present study describes a profound biophysical characterization of HERG-N588K revealing both loss-of-function and gain-of-function...

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