?:definition
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Any process in which the internalization of a signaling receptor activates or increases the frequency, rate or extent of signal transduction. Receptor internalization can enhance signaling by concentrating signaling molecules in one location, or by moving a ligand-activated receptor to the location of downstream signaling proteins. Endosomes for example can serve as important intracellular signaling platforms. [GOC:bf, GOC:signaling, PMID:17908284, PMID:19696798]
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