Gas-phase study on uridine: Conformation and X-ray photofragmentation
Entity
UAM. Departamento de QuímicaPublisher
American Institute of Physics IncDate
2015-05-21Citation
10.1063/1.4919878
Journal of Chemical Physics 142.19 (2015): 194303
ISSN
0021-9606 (print); 1089-7690 (online)DOI
10.1063/1.4919878Funded by
Financial support from the Academy of Finland, the European COST Action XLIC CM1204 and the EU Transnational Access to Research Infrastructures programme. Computational resources from the FGI project (Finland) are acknowledged. D.T.H. acknowledges the Finnish Cultural Foundation for funding and the MINECO Project No. FIS2013-42002- R. E.R. acknowledges funding from the Swedish Research Council (VR)Project
Gobierno de España. FIS2013-42002-REditor's Version
http://dx.doi.org/10.1063/1.4919878Subjects
Ionization; Carbon; Synchrotron radiation; Core ionization; QuímicaRights
© 2015 AIP Publishing LLCAbstract
Fragmentation of RNA nucleoside uridine, induced by carbon 1s core ionization, has been studied. The measurements by combined electron and ion spectroscopy have been performed in gas phase utilizing synchrotron radiation. As uridine is a combination of d-ribose and uracil, which have been studied earlier with the same method, this study also considers the effect of chemical environment and the relevant functional groups. Furthermore, since in core ionization the initial core hole is always highly localized, charge migration prior to fragmentation has been studied here. This study also demonstrates the destructive nature of core ionization as in most cases the C 1s ionization of uridine leads to concerted explosions producing only small fragments with masses ≤43 amu. In addition to fragmentation patterns, we found out that upon evaporation the sugar part of the uridine molecule attains hexagonal form
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Google Scholar:Itälä, Eero
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Kooser, Kuno
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Rachlew, Elisabeth
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Levola, Helena
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Ha, Dang Trinh
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Kukk, Edwin
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