ACE2 and COVID-19: For instance, a network pharmacology and molecular docking study revealed that arctiin and linarin, the core components of Jinhua Qinggan Granules (JQG), exhibited high binding affinities to key targets including COVID-19 3CL hydrolase and ACE2, suggesting a common mechanism of JQG in treating coronavirus diseases such as SARS, MERS, and COVID-19 (Zhang et al., 2021).