Journal
CURRENT OPINION IN CELL BIOLOGY
Volume 18, Issue 2, Pages 162-167Publisher
CURRENT BIOLOGY LTD
DOI: 10.1016/j.ceb.2006.02.004
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The discovery that Ras proteins are modified by enzymes restricted to the endoplasmic reticulum and Golgi apparatus and that, at steady state, a significant pool of Ras is localized on the Golgi has led to the hypothesis that Ras can become activated on and signal from intracellular membranes. Fluorescent probes capable of showing when and where in living cells Ras becomes activated together with studies of Ras proteins stringently tethered to intracellular membranes have confirmed this hypothesis. Thus, recent studies of Ras have contributed to the rapidly expanding field of compartmentalized signaling.
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