Fig. 9.

Depiction of SARS-CoV-2 using its spike protein (S-protein) to bind to angiotensin converting enzyme 2 (ACE2) receptor to initiate infection. A) Schematic diagram depicting interactions between SARS-CoV-2 S-protein and ACE2. B) Co-crystal structure highlighting the binding interface between S-protein (purple) and ACE2 (orange). (For interpretation of the references to colour in this figure legend, the reader is referred to the web version of this article.)