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. 2019 Oct 30;10:4939. doi: 10.1038/s41467-019-12718-0

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© The Author(s) 2019

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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Fig. 1 — Architecture of OLPVRII pentamer and interprotomer contacts. a View from the cytoplasmic side. Surface representation of the pentamer. Central pore is contoured by a red circle. b View from the cytoplasmic side. Cartoon representation of the pentamer. Retinal cofactor is colored cyan. c Detailed view of the main region of interprotomer contacts. Protomers C, D and E are colored gray. d Side view of the pentamer. One protomer is hidden for clarity. Cavity inside the pentamer was calculated using HOLLOW⁶⁹ and is colored light blue, the hydrophobic membrane core boundaries are shown with solid horizontal lines. e, f Detailed view of the interprotomer contacts