Fig. 1

3D-graphical illustrations of the structural proteins of SARS-CoV-2 (A) and genome (B). S protein genetic site contained SP (single peptide), CP (cytoplasmic tail), FP (fusion peptide), CD (connector domain), NTD (N-terminal domain), RBD, TM (transmembrane domain), SD1, and SD2 (subdomain 1 and 2), S1/S2 (S1/S2 protease cleavage site), S2′ (S2′ protease cleavage site), HR1, CH (central helix), HR2