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  • Title: Changes of fluorescence spectra of 2'-deoxyguanosine in aqueous solution by radiation.
    Author: Mandal PC, Yamamoto O.
    Journal: Biochem Int; 1986 Feb; 12(2):255-65. PubMed ID: 3964284.
    Abstract:
    Aqueous solution of 2'-deoxyguanosine (5 X 10(-4) M, pH 7.0) was irradiated with 60Co gamma-rays under O2, N2, N2O, and t-BuOH-N2, respectively. A marked increase in fluorescence emission intensity was observed under all atmospheric conditions as was observed in aqueous solutions of adenine and 2'-deoxyadenosine. However, the fluorescence yield from 2'-deoxyguanosine with radiation was lower under O2 and much higher under t-BuOH-N2 than that from 2'-deoxyadenosine though it was not so different both under N2 and N2O. Such high fluorescence yield from 2'-deoxyguanosine especially under t-BuOH-N2 suggests that guanine base has a specific reactivity with hydrated electron or t-butanol radical differing from the other nucleobases.
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