Human cardiac potassium channel DNA polymorphism modulates access to drug-binding site and causes drug resistance

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Human cardiac potassium channel DNA polymorphism modulates access to drug-binding site and causes drug resistance.

Expression of voltage-gated K channel, shaker-related subfamily, member 5 (KCNA5) underlies the human atrial ultra-rapid delayed rectifier K current (I(Kur)). The KCNA5 polymorphism resulting in P532L in the C terminus generates I(Kur) that is indistinguishable from wild type at baseline but strikingly resistant to drug block. In the present study, truncating the C terminus of KCNA5 generated a...

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ژورنال

عنوان ژورنال: Journal of Clinical Investigation

سال: 2005

ISSN: 0021-9738

DOI: 10.1172/jci23741