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Review

Nature Reviews Molecular Cell Biology 3, 600–614 (1 August 2002) | doi:10.1038/nrm883

Signal transduction and endocytosis: close encounters of many kinds

Alexander Sorkin & Mark von Zastrow

Binding of hormones, growth factors and other cell modulators to cell-surface receptors triggers a complex array of signal-transduction events. The activation of many receptors also accelerates their endocytosis. Endocytic transport is important in regulating signal transduction and in mediating the formation of specialized signalling complexes. Conversely, signal-transduction events modulate specific components of the endocytic machinery. Recent studies of protein tyrosine kinases and G-protein-coupled receptors have shed new light on the mechanisms and functional consequences of this bidirectional interplay between signalling and membrane-transport networks.