7C9R:
reference: Cryo-EM structure of a Ca(2+)-bound photosynthetic LH1-RC complex containing multiple alphabeta-polypeptides., Tani K, Kanno R, Makino Y, Hall M, Takenouchi M, Imanishi M, Yu LJ, Overmann J, Madigan MT, Kimura Y, Mizoguchi A, Humbel BM, Wang-Otomo ZY, Nat Commun. 2020 Oct 2;11(1):4955. doi: 10.1038/s41467-020-18748-3. PMID: 33009385

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