Fig. 2.

Structure of the severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2) and interaction with host cellular receptor ACE2. SARS-CoV-2 encodes for four structural proteins, spike glycoprotein, membrane glycoprotein (M), Envelope (E), nucleocapsid (N). Spike glycoprotein is embedded in the host derived membrane which binds with the host cell receptor ACE2. The inset is showing the protein–protein interaction of SARS-CoV-2 S-glycoprotein with host cell receptor ACE2 mediated via receptor binding domain (RBD) present in spike glycoprotein and peptidase domain of ACE2