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The extracellular domain of human ACE2 and RBD of SARS-CoV-2 S protein is shown with gray and purple, respectively (A,B). The RBD attached O-glycan is shown with green spheres (C). For the sake of simplicity, only the N-glycans in the proximity of RBD-ACE2 interface are shown with pink spheres. Visualization of the complex with full presentation of the N-glycans can be found in Fig. S1 (D). Two O-glycan interaction sites H1 and H2, are shown with orange (E).
