Ultraviolet Spectroscopy and Theoretical Calculations of Mono- and Dihydrated Clusters of the Guanine Nucleosides: Possibility of Different Hydration Structures for Guanosine and 2'-Deoxyguanosine
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Mono- and dihydrated clusters of guanosine (Gs) and 2′-deoxyguanosine (2′-dGs) are formed by laser desorption combined with supersonic-jet cooling, and their electronic spectra are obtained by resonant two-photon ionization spectroscopy. The electronic spectra of these hydrated clusters appear to be composed of multiple structural isomers. Possible hydration structures are investigated based on comparison with the result for 9-methylguanine (9MG) and computational studies. The dihydrated cluster of Gs is found to exhibit absorption bands which are significantly shifted with respect to those of 2′-dGs and 9MG. The observation suggests the existence of specific dihydrate structures involving the 2′-hydroxy group of Gs.
- 公益社団法人 日本化学会の論文
公益社団法人 日本化学会 | 論文
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