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Trends Cell Biol. 1995 Dec;5(12):465-70.

Compartmentalized signal transduction by receptor tyrosine kinases.

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Dept of Anatomy and Cell Biology, McGill University, Montreal, P Q, Canada H3A 2B2.


Signal transduction through receptor tyrosine kinases is believed to occur mainly at the plasma membrane. Ligands bind to their cognate receptors and trigger autophosphorylation events, which are detected by intracellular signalling molecules. However, ligands, such as epidermal growth factor and insulin, induce the rapid internalization of their receptors into endosomes. Although this event is traditionally thought to attenuate the ligand-induced response, in this article the authors discuss an alternative scenario in which selective and regulated signal transduction from receptor tyrosine kinases occurs within the endosome.


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