.0 (http://metapocket.eml.org) which combines prediction of sites from four methods viz. LIGSITE csc, PASS, Q-SiteFinder and SURFNET to improve the prediction. The active site residues of enzymes 3CL-pro, PL-pro of SARS-CoV, SARS-CoV-2 and human ACE2 were found from review of literature (Báez-Santos et al., 20