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A diagrammatic representation of SARS-CoV-2 showing the organisation of the viral structural proteins. The spike protein assembles into a trimeric structure with the RBD located at the top of the trimer. The spike trimer is embedded in a lipid bilayer containing the membrane and envelope proteins. The nucleoprotein binds the viral RNA and also serves to stabilize the base of the spike trimer. Spike, S; Receptor-binding domain, RBD; Membrane, M; Envelope, E; Nucleoprotein, N.
