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Inhibitor Binding Studies of Mycobacterium tuberculosis MraY (Rv2156c): Insights from Molecular Modeling, Docking and Simulation Studies.

Author
Abstract
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Tuberculosis (TB) is a contagious disease caused by Mycobacterium tuberculosis (M.tb) or tubercule bacillus, and H37Rv is the most studied clinical strain. The recent development of resistance to existing drugs is a global healthcare challenge to control and cure TB. Hence, there is a critical need to discover new drug targets in M.tb. The members of peptidoglycan biosynthesis pathway are attractive target proteins for antibacterial drug development. We have performed the in-silico analysis of M.tb MraY (Rv2156c) integral membrane protein, constructed the 3D structure model of M.tb MraY based on homology modeling method. The validated model was complexed with antibiotic muraymycin D2 (MD2) and was used to generate structure-based pharmacophore model (e-pharmacophore). High-throughput virtual screening (HTVS) of Asinex database and molecular docking of hits was performed to identify the potential inhibitors based on their mode of interactions with the key residues involved in M.tb MraY-MD2 binding. The validation of these molecules was performed using molecular dynamics (MD) simulations for two best identified hit molecules complexed with M.tb MraY in the lipid bilayer, dipalmitoylphosphatidyl-choline (DPPC) membrane. The results indicated the stability of the complexes formed and retained non-bonding interactions similar to MD2. These findings may help in the design of new inhibitors to M.tb MraY involved in peptidoglycan biosynthesis.

Year of Publication
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2018
Journal
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Journal of biomolecular structure & dynamics
Number of Pages
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1-33
Date Published
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2018
ISSN Number
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0739-1102
DOI
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10.1080/07391102.2018.1526715
Short Title
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J Biomol Struct Dyn
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