Fig. 2: ISM3312 exhibits pan-coronavirus and irreversible inhibitory activity against different Mpros.
From: A novel, covalent broad-spectrum inhibitor targeting human coronavirus Mpro
a Crystal structure of ISM3312 in complex with SARS-CoV-2 Mpro. Cartoon representation of dimeric Mpro bound with ISM3312. Mpro is in grey and ISM3312 is shown as magenta ball-and-stick models in the active sites of Mpro. b ISM3312 binds to the pocket of the SARS-CoV-2 Mpro active site and interacts with the amino acid residues surrounding it by forming hydrogen bonds (shown in dashed line). The residues involved are visualized as sticks. c Enzymatic dilution assay against SARS-CoV-2 Mpro highlights the irreversible binding mechanism of ISM3312. d The predicted binding model of ISM3312 with Mpro from human coronavirus. e ISM3312 showed broad and potent inhibition against Mpro proteins from the listed coronavirus types. Measurement after 90 min incubation, mean values are shown; n = 3. Source data are provided as a Source Data file.
