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Orexin peptides in the brain regulate physiological functions such as the sleep-wake cycle, and are thus drug targets for the treatment of insomnia. Using serial femtosecond crystallography and multi-crystal data collection with a synchrotron light source, we determined structures of human orexin 2 receptor in complex with the subtype-selective antagonist EMPA (N-ethyl-2-[(6-methoxy-pyridin-3-yl)-(toluene-2-sulfonyl)-amino]-N-pyridin-3-ylmethyl-acetamide)...
G-protein coupled receptors (GPCRs) play essential roles in regulation of many physiological processes and are one of the major targets of pharmaceutical drugs. The 3D structure can provide important information for the understanding of GPCR function and the design of new drugs. However, the success of structure determination relies largely on the production of recombinant GPCRs, because the expression...
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