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• W3039175056 abstract "Small molecule compounds which form colloidal aggregates in solution are problematic in early drug discovery; adsorption of the target protein by these aggregates can lead to false positives in inhibition assays. In this work, we probe the molecular basis of this inhibitory mechanism using molecular dynamics simulations. Specifically, we examine in aqueous solution the adsorption of the enzymes β-lactamase and PTP1B onto aggregates of the drug miconazole. In accordance with experiment, molecular dynamics simulations observe formation of miconazole aggregates as well as subsequent association of these aggregates with β-lactamase and PTP1B. When complexed with aggregate, the proteins do not exhibit significant alteration in protein tertiary structure or dynamics on the microsecond time scale of the simulations, but they do indicate persistent occlusion of the protein active site by miconazole molecules. MD simulations further suggest this occlusion can occur via surficial interactions of protein with miconazole but also potentially by envelopment of the protein by miconazole. The heterogeneous polarity of the miconazole aggregate surface seems to underpin its activity as an invasive and nonspecific inhibitory agent. A deeper understanding of these protein/aggregate systems has implications not only for drug design but also for their exploitation as tools in drug delivery and analytical biochemistry." @default.
• W3039175056 created "2020-07-10" @default.
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• W3039175056 date "2020-07-06" @default.
• W3039175056 modified "2023-09-30" @default.
• W3039175056 title "How Do Small Molecule Aggregates Inhibit Enzyme Activity? A Molecular Dynamics Study" @default.
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• W3039175056 doi "https://doi.org/10.1021/acs.jcim.0c00540" @default.
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• W3039175056 hasPublicationYear "2020" @default.
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