Fig. 1. SARS-CoV-2 feature. The virus has 4 main structural proteins: S protein, E protein, M protein, and N protein. ACE2 receptor: angiotensin-converting enzyme 2 receptor, E protein: envelope protein, M protein: membrane protein, N protein: nucleocapside protein, SARS-CoV-2: severe acute respiratory syndrome-coronavirus-2, S protein: spike protein.
