id author title date pages extension mime words sentences flesch summary cache txt cord-283739-p7b4mtbl Theerawatanasirikul, Sirin Structural-based virtual screening and in vitro assays for small molecules inhibiting the feline coronavirus 3CL protease as a surrogate platform for coronaviruses 2020-09-07 .txt text/plain 1604 97 59 We investigated the potential drug-liked compounds and their inhibitory interaction on the 3CL(pro) active sites of CoVs by the structural-bases virtual screening. Evaluation of antiviral activity using cell-based assay showed that NSC629301 and NSC71097 could strongly inhibit the cytopathic effect and also reduced replication of FIPV in CRFK cells in all examined conditions with the low range of EC(50) (6.11 ± 1.90 to 7.75 ± 0.48 μM and 1.99 ± 0.30 to 4.03 ± 0.60 μM, respectively), less than those of ribavirin and lopinavir. According to the FIPV 3CL pro structurral based study, we determined if the candidate 293 compounds that could bind to the active site and inhibited the protease activity still actively 294 Cys144 and His41, the active residues of FIPV 3CL pro , formed the π-alkyl interaction 352 and hydrogen bond to the compounds, respectively. ./cache/cord-283739-p7b4mtbl.txt ./txt/cord-283739-p7b4mtbl.txt