Exciting Times for PIP2

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Science  06 Nov 1998:
Vol. 282, Issue 5391, pp. 1059-1060
DOI: 10.1126/science.282.5391.1059

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One class of potassium channels, the KATP channels, are key players in a variety of functions-insulin secretion, blood vessel tone, and the response of the heart to lack of oxygen. Ashcroft describes in her Perspective how new results in this issue explain a long-standing puzzle about the true sensitivity of these channels to ATP. Baukrowitz et al. and Shyng et al. show that the phospholipid PIPregulates the ATP sensitivity of these channels.