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. 2020 Dec 11;10:21779. doi: 10.1038/s41598-020-78711-6

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© The Author(s) 2020

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Structure of SARS-CoV-2 Receptor Binding Domain bound to ACE2. The secondary structure elements of RBD are differentially colored (Alpha helices: purple, 3_10 helices: iceblue, beta strands: yellow, and turns/coil: cyan). Disulfide bridges (red) and tryptophan residues (blue) are shown as sticks, while N-glycosylation asparagine residues (green) are shown as VDW spheres. The region of ACE2 encompassing residues 1–115 (colored white) which interacts with RBD is also shown. The structure was generated using Protein Data Bank (PDB) structures 6xm0 and 6m0j.