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Mutagenesis and Functional Analysis of Ion Channels Heterologously Expressed in Mammalian Cells
Published on: October 1, 2010
Correlating structure and function in ATP-sensitive K+ channels
1University Lab of Physiology, Oxford, UK.
Abstract:
ATP-sensitive K+ channels couple cell metabolism to electrical activity in nerve, muscle and endocrine cells, and play important roles in these tissues under both physiological and pathological conditions. The KATP channel is an octameric complex of two unrelated types of subunit: a pore-forming subunit (Kir6.2) and a regulatory subunit, the sulphonylurea receptor (SUR). This review focuses on the regulation of KATP channel activity by nucleotides and cell metabolism and considers which regulatory mechanisms are intrinsic to Kir6.2 and which are conferred by association with SUR.
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