Determination of potential inhibitors based on isatin derivatives against SARS-CoV-2 main protease (mpro): a molecular docking, molecular dynamics and structure-activity relationship studies.

Journal of Biomolecular Structure & Dynamics
Vishnu Nayak BadavathAnik Sen

Abstract

SARS-COV-2, the novel coronavirus and root of global pandemic COVID-19 caused a severe health threat throughout the world. Lack of specific treatments raised an effort to find potential inhibitors for the viral proteins. The recently invented crystal structure of SARS-CoV-2 main protease (Mpro) and its key role in viral replication; non-resemblance to any human protease makes it a perfect target for inhibitor research. This article reports a computer-aided drug design (CADD) approach for the screening of 118 compounds with 16 distinct heterocyclic moieties in comparison with 5 natural products and 7 repurposed drugs. Molecular docking analysis against Mpro protein were performed finding isatin linked with a oxidiazoles (A2 and A4) derivatives to have the best docking scores of -11.22 kcal/mol and -11.15 kcal/mol respectively. Structure-activity relationship studies showed a good comparison with a known active Mpro inhibitor and repurposed drug ebselen with an IC50 value of -0.67 μM. Molecular Dynamics (MD) simulations for 50 ns were performed for A2 and A4 supporting the stability of the two compounds within the binding pocket, largely at the S1, S2 and S4 domains with high binding energy suggesting their suitability as potenti...Continue Reading

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Citations

Jan 21, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Konstantina VougogiannopoulouAlexios-Leandros Skaltsounis
May 6, 2021·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Federico Vittorio RossiEnrico Marcantoni
Jul 14, 2021·Journal of Biomolecular Structure & Dynamics·Vishal K SinghRamendra K Singh

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Software Mentioned

mmpbsa
AutoDock4
AutoDock
Gaussview
dock
PRODRG2
SwissADME
APBS
Gromacs
Gaussian

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