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.jpg): Failed to open stream: No such file or directory in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 117 J+Biomol+Struct+Dyn
2021 ; 39
(10
): 3733-3746
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Fragment tailoring strategy to design novel chemical entities as potential
binders of novel corona virus main protease
#MMPMID32452282
Choudhury C
J Biomol Struct Dyn
2021[Jul]; 39
(10
): 3733-3746
PMID32452282
show ga
The recent pandemic of severe acute respiratory syndrome-coronavirus2
(SARS-CoV-2) infection (COVID-19) has put the world on serious alert. The main
protease of SARS-CoV-2 (SARS-CoV-2-M(Pro)) cleaves the long polyprotein chains to
release functional proteins required for replication of the virus and thus is a
potential drug target to design new chemical entities in order to inhibit the
viral replication in human cells. The current study employs state of art
computational methods to design novel molecules by linking molecular fragments
which specifically bind to different constituent sub-pockets of the
SARS-CoV-2-M(Pro) binding site. A huge library of 191678 fragments was screened
against the binding cavity of SARS-CoV-2-M(Pro) and high affinity fragments
binding to adjacent sub-pockets were tailored to generate new molecules. These
newly formed molecules were further subjected to molecular docking, ADMET filters
and MM-GBSA binding energy calculations to select 17 best molecules (named as
MP-In1 to MP-In17), which showed comparable binding affinities and interactions
with the key binding site residues as the reference ligand. The complexes of
these 17 molecules and the reference molecule with SARS-CoV-2-M(Pro), were
subjected to molecular dynamics simulations, which assessed the stabilities of
their binding with SARS-CoV-2-M(Pro). Fifteen molecules were found to form stable
complexes with SARS-CoV-2-M(Pro). These novel chemical entities designed
specifically according to the pharmacophoric requirements of SARS-CoV-2-M(Pro)
binding pockets showed good synthetic feasibility and returned no exact match
when searched against chemical databases. Considering their interactions, binding
efficiencies and novel chemotypes, they can be further evaluated as potential
starting points for SARS-CoV-2 drug discovery.