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- W2511051982 abstract "Small molecule agonists and antagonists of the orexinergic system have key implications for research and therapeutic purposes. We report a pharmacophore model trained on ∼200 antagonists and prospectively validated by screening a collection of ∼137,000 compounds. The resulting hit list, 395 compounds, was tested for OX1 and OX2 receptor activity using calcium mobilization assay in recombinant cell lines. Validation was conducted using both calcium mobilization and [125I]-orexin-A competition binding. Compounds 4–7 have weak agonist activity and Ki’s in the 1–30 μM range; compounds 8–14 are antagonists with Ki’s in the 0.1–10 μM range for OX2 and 1–50 μM for the OX1 receptor. Docking simulations were used to devise a working hypothesis where two subpockets are important for activation, one between TM5 and TM6 lined by Phe5.42, Tyr5.47, and Tyr6.48 and another above the orthosteric pocket lined by Asp2.65 and Tyr7.32." @default.
- W2511051982 created "2016-09-16" @default.
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- W2511051982 date "2016-09-08" @default.
- W2511051982 modified "2023-10-16" @default.
- W2511051982 title "Pharmacophore Model To Discover OX<sub>1</sub> and OX<sub>2</sub> Orexin Receptor Ligands" @default.
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- W2511051982 doi "https://doi.org/10.1021/acs.jmedchem.6b00333" @default.
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