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Spectral Unmixing-Based Reaction Monitoring of Transformations Between Nucleosides and Nucleobases
Citation key Kaspar.2020
Author Kaspar, Felix and Giessmann, Robert T. and Westarp, Sarah and Hellendahl, Katja F. and Krausch, Niels and Thiele, Isabel and Walczak, Miriam C. and Neubauer, Peter and Wagner, Anke
Year 2020
DOI 10.1002/cbic.202000204
Journal ChemBioChem
Abstract The increased interest in (enzymatic) transformations between nucleosides and nucleobases has demanded the development of efficient analytical tools. In this report we present an update and extension of our recently described method for the monitoring of these reactions via spectral unmixing. The presented method uses differences in the UV absorption spectra of nucleosides and nucleobases after alkaline quenching to derive their ratio based on spectral shape by fitting of normalized reference spectra. It is applicable to a broad compound spectrum comprising more than 35 examples, offers HPLC-like accuracy, ease of handling and significant reductions in both cost and data acquisition time compared to other methods. This contribution details the principle of spectral unmixing-based reaction monitoring, gives recommendations regarding solutions to common problems and applications that necessitate special sample treatment. We provide software, workflows and reference spectra that facilitate the straightforward and versatile application of the method.
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