Incorporation of a fluorous diazirine group into phosphatidylinositol 4,5-bisphosphate to illustrate its interaction with ADP-ribosylation factor 1 |
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Authors: | Huang Weigang Sun Wei Song Zhiquan Yu Yanbao Chen Xian Zhang Qisheng |
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Affiliation: | Division of Chemical Biology and Medicinal Chemistry, University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, USA. |
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Abstract: | Phosphatidylinositides are one family of the most versatile signaling molecules in cells, yet how they interact with different proteins to regulate biological processes is not well understood. Towards a general strategy to identify phosphatidylinositide-protein interactions, a fluorous diazirine group has been incorporated into phosphatidylinositol 4,5-bisphosphate (PIP(2)). The modified PIP(2) was effectively cleaved by phospholipase C, one signaling protein that utilizes PIP(2) as its endogenous substrate. Upon light illumination, the PIP(2) probe effectively crosslinks with small GTPase ADP-ribosylation 1 to form a complex, suggesting that the probe might be suitable to identify PIP(2)-interacting proteins on the proteome level. |
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