Available online 23 December 2021
Highlights•Rapidly evolving COVID-19 pandemic demands the discovery of effective antiviral drugs.
•DFT is extensively applied in molecular modeling studies of COVID-19 pharmaceuticals.
•DFT is used as a stand-alone method for electronic structure calculations of drug compounds.
•Molecular mechanics techniques and DFT are applied in synergy to examine drug-target interactions.
•Hybrid QM/MM approach accurately elucidates catalytic/inhibitory reaction mechanisms.
AbstractThe rapidly evolving Coronavirus 2019 (COVID-19) pandemic has led to millions of deaths around the world, highlighting the pressing need to develop effective antiviral pharmaceuticals. Recent efforts with computer-aided rational drug discovery have allowed detailed examination of drug–macromolecule interactions primarily by molecular mechanics (MM) techniques. Less widely applied in COVID-19 drug modeling is density functional theory (DFT), a quantum mechanics (QM) method that enables electronic structure calculations and elucidations of reaction mechanisms. Here, we review recent advances in applying DFT in molecular modeling studies of COVID-19 pharmaceuticals. We start by providing an overview of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) drugs and targets, followed by a brief introduction to DFT. We then provide a discussion of different approaches by which DFT has been applied. Finally, we discuss essential factors to consider when incorporating DFT in future drug modeling research.
KeywordsCOVID-19
SARS-CoV-2
quantum mechanics
density functional theory
rational drug design
molecular modeling
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