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    Nat Chem Biol. 2010 May;6(5):324-6. doi: 10.1038/nchembio.348. Epub 2010 Apr 4.

    Activation of membrane-permeant caged PtdIns(3)P induces endosomal fusion in cells.

    Source

    European Molecular Biology Institute, Cell Biology and Biophysics Unit, Heidelberg, Germany.

    Abstract

    Phosphatidylinositol 3-phosphate (PtdIns(3)P) is a phospholipid residing on early endosomes, where it is proposed to be involved in endosomal fusion. We synthesized membrane-permeant derivatives of PtdIns(3)P, including a caged version that is to our knowledge the first photoactivatable phosphoinositide derivative developed so far. In living cells, photoactivation of caged PtdIns(3)P induced rapid endosomal fusion in an EEA1-dependent fashion, thus providing in vivo evidence that PtdIns(3)P is a sufficient signal for driving this process.

    PMID:
    20364126
    [PubMed - indexed for MEDLINE]

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