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  • Title: Potential regulation of ADP-ribosylation factor 6 signalling by phosphatidylinositol 3,4,5-trisphosphate.
    Author: Cullen PJ, Venkateswarlu K.
    Journal: Biochem Soc Trans; 1999 Aug; 27(4):683-9. PubMed ID: 10917667.
    Abstract:
    In this review we have described data supporting the conclusion that PtdIns(3,4,5)P3 may regulate the activation state of ARF6 through an ability to recruit the ARF exchange factors ARNO, GRP1 and cytohesin-1 to the plasma membrane. The downstream consequences of such a PtdIns(3,4,5)P3-dependent activation of ARF6 are presently unclear. However, given the role of ARF6 in fusion events at the plasma membrane, we have proposed that PtdIns(3,4,5)P3 may regulate vesicle trafficking at this membrane through its ability to activate ARF6. This is an attractive possibility given the number of PtdIns(3,4,5)P3-dependent pathways which involve some aspect of vesicle trafficking at the plasma membrane, for instance glucose transport, membrane ruffling and cell movement.
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