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• W2553376712 abstract "The authors report a 2.6 Å resolution crystal structure of the human CB1 cannabinoid receptor trapped in the inactive conformation and bound to the antagonist taranabant. The human cannabinoid G-protein-coupled receptors (GPCRs) CB1 and CB2 mediate the responses to endocannabinoids and the plant cannabinoid Δ9-tetrahydrocannabinol (THC). They are important drug discovery targets because of the therapeutic potential of receptor modulators for controlling disorders such as pain, epilepsy and obesity. Daniel Rosenbaum and colleagues determine a crystal structure of the human CB1 receptor bound to the inhibitor taranabant. The extracellular surface of the receptor is distinct from other lipid-activated GPCRs and forms a critical part of the ligand-binding pocket. Docking studies demonstrate how this pocket might accommodate tetrahydrocannabinol. The structure should aid drug discovery efforts for novel cannabinoid system modulators as potential therapeutics. The human cannabinoid G-protein-coupled receptors (GPCRs) CB1 and CB2 mediate the functional responses to the endocannabinoids anandamide and 2-arachidonyl glycerol (2-AG) and to the widely consumed plant phytocannabinoid Δ9-tetrahydrocannabinol (THC)1. The cannabinoid receptors have been the targets of intensive drug discovery efforts, because modulation of these receptors has therapeutic potential to control pain2, epilepsy3, obesity4, and other disorders. Although much progress in understanding the biophysical properties of GPCRs has recently been made, investigations of the molecular mechanisms of the cannabinoids and their receptors have lacked high-resolution structural data. Here we report the use of GPCR engineering and lipidic cubic phase crystallization to determine the structure of the human CB1 receptor bound to the inhibitor taranabant at 2.6-Å resolution. We found that the extracellular surface of CB1, including the highly conserved membrane-proximal N-terminal region, is distinct from those of other lipid-activated GPCRs, forming a critical part of the ligand-binding pocket. Docking studies further demonstrate how this same pocket may accommodate the cannabinoid agonist THC. Our CB1 structure provides an atomic framework for studying cannabinoid receptor function and will aid the design and optimization of therapeutic modulators of the endocannabinoid system." @default.
• W2553376712 created "2016-11-30" @default.
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• W2553376712 date "2016-11-16" @default.
• W2553376712 modified "2023-10-11" @default.
• W2553376712 title "High-resolution crystal structure of the human CB1 cannabinoid receptor" @default.
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• W2553376712 doi "https://doi.org/10.1038/nature20613" @default.
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