Abstract
Isotope labelling experiments with stable or radioactive isotopes have long been an integral part of biological and medical research. Labelling experiments led to the discovery of new metabolic pathways and made it possible to calculate the fluxes responsible for a metabolic phenotype, i.e., the qualitative and quantitative composition of metabolites in a biological system. Prerequisite for efficient isotope labelling experiments is a reliable and precise method to analyze the redistribution of isotope label in a metabolic network. Here we describe the use of the CORRECTOR program, which utilizes matrix calculations to correct mass spectral data from stable isotope labelling experiments for the distorting effect of naturally occurring stable isotopes (NOIs). CORRECTOR facilitates and speeds up the routine quantification of experimentally introduced isotope label from multiple mass spectral readouts, which are generated by routine metabolite profiling when combined with stable isotope labelling experiments.
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Acknowledgements
This work was supported by the Max Planck society and a grant from the DFG (Deutsche Forschungsgemeinschaft) to JK. The CORRECTOR software tool was supported in part by the European META-PHOR project, FOOD-CT-2006-036220, and the GoFORSYS project (http://www.goforsys.de/) funded by the Bundesministerium für Bildung und Forschung (BMBF). JH and BH were supported by BMBF grants 0315295 and 0315426A.
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Huege, J., Goetze, J., Dethloff, F., Junker, B., Kopka, J. (2014). Quantification of Stable Isotope Label in Metabolites via Mass Spectrometry. In: Hicks, G., Robert, S. (eds) Plant Chemical Genomics. Methods in Molecular Biology, vol 1056. Humana Press, Totowa, NJ. https://doi.org/10.1007/978-1-62703-592-7_20
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DOI: https://doi.org/10.1007/978-1-62703-592-7_20
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