Robert Lefkowitz (Duke University) Part 2: Beta-arrestins

#part-2 In part 2 of the lecture, recent discoveries about how Beta-arrestins not only desensitize the receptors but also mediate their endocytosis, as well as independent signaling pathways, are reviewed. Also covered is how these new discoveries provide a basis for designing novel classes of pharmacological agents which can promote signaling exclusively down either the G protein or Beta-arrestin mediated pathways, so called biased agonists