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• W4387297110 abstract "At the beginning of the last century, multiple pandemics caused by influenza (flu) viruses severely impacted public health. Despite the development of vaccinations and antiviral medications to prevent and control impending flu outbreaks, unforeseen novel strains and continuously evolving old strains continue to represent a serious threat to human life. Therefore, the recently identified H10N7, for which not much data is available for rational structure-based drug design, needs to be further explored. Here, we investigated the structural dynamics of neuraminidase N7 upon binding of inhibitors, and the drug resistance mechanisms against the oseltamivir (OTV) and laninamivir (LNV) antivirals due to the crucial R292K mutation on the N7 using the computational microscope, molecular dynamics (MD) simulations. In this study, each system underwent long 2 × 1 μs MD simulations to answer the conformational changes and drug resistance mechanisms. These long time-scale dynamics simulations and free energy landscapes demonstrated that the mutant systems showed a high degree of conformational variation compared to their wildtype (WT) counterparts, and the LNV-bound mutant exhibited an extended 150-loop conformation. Further, the molecular mechanics Poisson-Boltzmann surface area (MM/PBSA) calculation and MM/GBSA free energy decomposition were used to characterize the binding of OTV and LNV with WT, and R292K mutated N7, revealing the R292K mutation as drug-resistant, facilitated by a decline in binding interaction and a reduction in the dehydration penalty. Due to the broader binding pocket cavity of the smaller K292 mutant residue relative to the wildtype, the drug carboxylate to K292 hydrogen bonding was lost, and the area surrounding the K292 residue was more accessible to water molecules. This implies that drug resistance could be reduced by strengthening the hydrogen bond contacts between N7 inhibitors and altered N7, creating inhibitors that can form a hydrogen bond to the mutant K292, or preserving the closed cavity conformations." @default.
• W4387297110 created "2023-10-04" @default.
• W4387297110 creator A5031168014 @default.
• W4387297110 creator A5039200161 @default.
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• W4387297110 date "2023-10-03" @default.
• W4387297110 modified "2023-10-14" @default.
• W4387297110 title "Microsecond dynamics of <scp>H10N7</scp> influenza neuraminidase reveals the plasticity of loop regions and drug resistance due to the <scp>R292K</scp> mutation" @default.
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• W4387297110 doi "https://doi.org/10.1002/jcc.27234" @default.
• W4387297110 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/37787086" @default.
• W4387297110 hasPublicationYear "2023" @default.
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