Abstract
Cholesterol determination by cholesterol oxidase reaction is a fast, convenient, and highly specific approach with widespread use in clinical diagnostics. Routinely, endpoint measurements with 4-aminophenazone or 4-aminoantipyrine as chromogens and sodium cholate, surfactants, or alcohols as solubilizing agents are used. Here we describe a novel kinetic method to determine cholesterol in 0.05–0.75 mM range in neutral or acidic buffers by use of recombinant cholesterol oxidase from Nocardioides simplex in a coupled reaction with horseradish peroxidase, ABTS as a chromogen, and methyl-β-cyclodextrin as a solubilizing agent.
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This work is supported by the Russian Science Foundation, project No. 21-64-00024.
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Sviridov, A.V., Karpov, M.V., Fokina, V.V., Donova, M.V. (2023). Cholesterol Assay Based on Recombinant Cholesterol Oxidase, ABTS, and Horseradish Peroxidase. In: Barreiro, C., Barredo, JL. (eds) Microbial Steroids. Methods in Molecular Biology, vol 2704. Humana, New York, NY. https://doi.org/10.1007/978-1-0716-3385-4_9
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DOI: https://doi.org/10.1007/978-1-0716-3385-4_9
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