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. 2023 Feb 15;14:846. doi: 10.1038/s41467-023-36460-w

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© The Author(s) 2023

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 — a Side view of the core complex parallel to the membrane plane. Color scheme: LH1-α, green; LH1-β, slate blue; PufX, orange; RC-L, wheat; RC-M, blue; RC-H, salmon; BChl a, red sticks; spheroidenes, yellow sticks; BPhe a, magenta sticks. b Top view from periplasmic side of the membrane with the same color scheme as in (a). c Top view of surface representation for the LH1–RC from the periplasmic side. Lipids and detergents are colored in gray. d Overlap view of the Rba. capsulatus LH1–RC (colored) and that of Rba. sphaeroides (black, PDB: 7F0L) by superposition of Cα carbons of the RC-M subunits. Protein-U as it exists in the Rba. sphaeroides LH1–RC is shown by a black transparent cartoon.