Abstract
The addition of Na and Ca chlorides to adenine (A), adenosine (Ado) and adenosine diphosphate solutions at pH 5.3 has been shown to result in intensification of EPR signals in samples irradiated by near UV at 77 K and appearance of signals of Cl •−2 and peroxyl radicals. The peroxyl radicals contribution can exceed 30% of total amount of paramagnetic products. The addition of inorganic phosphate reduces the contribution of peroxyl radicals. Possible mechanisms of the processes involved are discussed.
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Original Russian Text © T.A. Lozinova, A.V. Lander, 2013, published in Biofizika, 2013, Vol. 58, No. 3, pp. 445–452.
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Lozinova, T.A., Lander, A.V. Effect of inorganic salts on free radicals production by near UV irradiation of frozen aqueous solutions of adenine and its derivatives. BIOPHYSICS 58, 341–348 (2013). https://doi.org/10.1134/S0006350913030093
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DOI: https://doi.org/10.1134/S0006350913030093