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- W2010135382 abstract "(13)C NMR spectroscopy associated with the use of (13)C-enriched substrates is a powerful tool to investigate intracellular metabolism because of the wealth of information contained in the distribution of isotopes in key metabolites. A new method of using (13)C label distribution measurements in carbon skeletons of metabolites to estimate metabolic fluxes through biochemical reaction networks is presented here. This method can be applied to metabolite synthesis occurring by condensation reactions of the type nA --> B, where n is the number of precursor A molecules needed to synthesize one molecule of product B. NMR isotopomer distribution analysis (NMR-IDA) involves the introduction of a (13)C-enriched precursor, and measurements of the (13)C positional enrichments at just one carbon atom position of the product B via (13)C NMR spectroscopy. Information on isotopomer distribution is obtained, and data are analyzed according to a mathematical model based on multinomial probability expressions to obtain the best fit between theoretical and experimental (13)C label distribution. The use of the NMR-IDA method allows for estimation of two key parameters representing the fractional flux of (13)C-enriched tracer A molecules to total precursor A pool and the fraction of product B synthesized in the presence of a (13)C-enriched source, respectively. A practical example of NMR-IDA application to fatty acid synthesis from [(1,2 (13)C(2))acetyl]-L-carnitine in cultured primary astrocytes is also presented." @default.
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- W2010135382 date "2002-01-01" @default.
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- W2010135382 title "13C-NMR isotopomer distribution analysis: a method for measuring metabolic fluxes in condensation biosynthesis" @default.
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- W2010135382 doi "https://doi.org/10.1002/nbm.795" @default.
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