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. 2017 Sep 8;7:10999. doi: 10.1038/s41598-017-11194-0

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© The Author(s) 2017

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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TRPM8-Compound 1 complex, detail of the binding site. (A) Top view, perpendicular to the membrane plane, extra- to intracellular perspective. The naphthyl moiety of the ligand, here highlighted in cyan and represented in CPK, well fits into the sub-pocket framed by Ile746, Tyr745, Leu750 and Leu806 (in grey and CPK). (B) Side view, perpendicular to the transmembrane helices. Compound 1, represented in cyan and ball-end-stick, lands parallel to TM helices 2 and 3 surface, here in red cartoon. Dotted blue line represents the Hydrogen bond between the amine group of Compound 1 and the carboxyl function of Asp802, interaction further strengthened by opposite charge attraction. The furane ring locates between Leu750 and Phe794 (in grey and CPK).