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Crystal structure of SARS-CoV-2 nsp1 globular domain (Cartoon representation) comprising of residues 13 to 127 showing red helix, yellow sheet and green loop (PDB 7K3N). The structure of SARS-CoV-2 nsp1, like that of SARS-CoV, has six-stranded beta-barrel (yellow) and has additionally an alpha1 helix (red) and large number of flexible loops (green).
