A Moscucci

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Three different experimental approaches were used to establish that the first transmembrane segment (S1) is important for K+ channel assembly. First, hydrodynamic analyses of in vitro translated Kv1.1 N-terminal domain containing the S1 segment coassembles to form homotetrameric complexes, whereas deletion of the S1 segment abolishes coassembly. Second,(More)
The activation and inactivation relations of several ion channel currents overlap, suggesting the existence of a steady-state or "window" current. We studied L-type Ca2+ channel window current in single cardiac Purkinje cells using a voltage-clamp protocol by which channels were first inactivated nearly completely during a long-duration depolarizing step,(More)
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