6LZG:
reference: Structural and Functional Basis of SARS-CoV-2 Entry by Using Human ACE2., Wang Q, Zhang Y, Wu L, Niu S, Song C, Zhang Z, Lu G, Qiao C, Hu Y, Yuen KY, Wang Q, Zhou H, Yan J, Qi J, Cell. 2020 Apr 7. pii: S0092-8674(20)30338-X. doi: 10.1016/j.cell.2020.03.045. PMID: 32275855

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