Fig. 3: GC373 binds in the active site pocket of SARS-CoV-2 Mpro.
From: Feline coronavirus drug inhibits the main protease of SARS-CoV-2 and blocks virus replication
a GC373 forms a covalent bond with C145, and the oxyanion is stabilized by backbone H-bonds with G143, S144, and C145. b The P2 position of GC373 is stabilized by a hydrophobic pocket by the general base H41, and residues M49, and M165. c, d H-bonds are established with GC373 and side chains of H163 and E166, as well as backbone of residue E166. SARS-CoV-2 Mpro is represented in cartoon representation with the inhibitor in pink. P1, P2, and P3 of the peptidyl inhibitor are indicated. PDB Code:6WTJ.
