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In some G protein-coupled receptors (GPCRs), agonist-dependent phosphorylation by specific GPCR kinases (GRKs) is an important mediator of receptor desensitization and endocytosis. Phosphorylation and the subsequent events that it triggers, such as arrestin binding, have been suggested to be regulatory mechanisms for a wide variety of GPCRs. In the present(More)
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