期刊
CHEMBIOCHEM
卷 15, 期 9, 页码 1253-1256出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/cbic.201402155
关键词
activity-based protein profiling; enzyme activity; HCV; phosphatidylinositol kinases; photo-crosslinking
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
Phosphatidylinositol kinases (PIKs) are key enzymatic regulators of membrane phospholipids and membrane environments that control many aspects of cellular function, from signal transduction to secretion, through the Golgi apparatus. Here, we have developed a photoreactive clickable probe, PIK-BPyne, to report the activity of PIKs. We investigated the selectivity and efficiency of the probe to both inhibit and label PIKs, and we compared PIK-BPyne to a wortmannin activity-based probe also known to target PIKs. We found that PIK-BPyne can act as an effective in situ activity-based probe, and for the first time, report changes in PI4K-III beta activity induced by the hepatitis C virus. These results establish the utility of PIK-BPyne for activity-based protein profiling studies of PIK function in native biological systems.
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