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The effects of γ irradiation on the hydration characteristics of DNA and polynucleotides. II. An NMR study of mixed H2O/D2O frozen solutions

par Mathur De Vre, R.;Bertinchamps, Albert
Référence Radiation research, 72, 2, page (181-189)
Publication Publié, 1977

Article révisé par les pairs

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Résumé :

We have studied the effects of γ irradiation at different temperatures on the hydration water proton resonance spectra from frozen H2O/D2O solutions of DNA and polynucleotides. Comparison of results obtained with pure H2O solutions showed a striking difference in the temperature-dependent variations of Δ(1/2) values in nonirradiated and irradiated DNA solutions. There is evidence that base rehydration with hydration water molecules occurs after an initial damage to the macromolecular chains in DNA caused by the direct or indirect radiation effects.