Fig. 4From: Utilizing nanozymes for combating COVID-19: advancements in diagnostics, treatments, and preventative measures(Copyright 2021, Nano Today)Schematic diagram of Ag-TiO2 SAN against SARS-CoV-2. The SAN Ag atom is tightly bound to both cysteine and asparagine, inhibiting the interaction between the S1 RBD and its receptor ACE2.Back to article page