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Regulation of alpha2AR trafficking and signaling by interacting proteins Wang Q; Limbird LEBiochem Pharmacol 2007[Apr]; 73 (8): 1135-45The continuing discovery of new G protein-coupled receptor (GPCR) interacting proteins and clarification of the functional consequences of these interactions has revealed multiple roles for these events. Some of these interactions serve to scaffold GPCRs to particular cellular micro-compartments or to tether them to defined signaling molecules, while other GPCR-protein interactions control GPCR trafficking and the kinetics of GPCR-mediated signaling transduction. This review provides a general overview of the variety of GPCR-protein interactions reported to date, and then focuses on one prototypical GPCR, the alpha(2)AR, and the in vitro and in vivo significance of its reciprocal interactions with arrestin and spinophilin. It seems appropriate to recognize the life and career of Arthur Hancock with a summary of studies that both affirm and surprise our preconceived notions of how nature is designed, as his career-long efforts similarly affirmed the complexity of human biology and attempted to surprise pathological changes in that biology with novel, discovery-based therapeutic interventions. Dr. Hancock's love of life, of family, and of commitment to making the world a better place are a model of the life well lived, and truly missed by those who were privileged to know, and thus love, him.|14-3-3 Proteins/metabolism[MESH]|Arrestin/metabolism/*physiology[MESH]|Endocytosis/physiology[MESH]|Humans[MESH]|Microfilament Proteins/metabolism/*physiology[MESH]|Nerve Tissue Proteins/metabolism/*physiology[MESH]|Phosphorylation[MESH]|Phosphotransferases/metabolism[MESH]|Receptors, Adrenergic, alpha-2/*metabolism/physiology[MESH]|Receptors, G-Protein-Coupled/metabolism[MESH]|Signal Transduction/*physiology[MESH] |
