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The three-dimensional structure of the receptor-binding domain (RBD) of the SARS-CoV-2 spike (S) glycoprotein. The RBD is shown in cyan, and the receptor-binding motif (RBM) of this protein, which interacts with the cell receptor, is shown in red. The SARS-CoV-2 RBD disulfide bonds are shown in yellow and marked with arrows. Adapted with permission from ref. [13]. Copyright 2020 Nature.
