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Nucleic Acids Research, 1975, Vol. 2, No. 8 1365-1374
© 1975

Articles

The photochemistry of purine components of nucleic acids. I. The efficiency of photolysis of adenine and guanine derivatives in aqueous solution

V.A. Ivanchenko, A.I. Titschenko, E.I. Budowsky*,+, N.A. Simukova* and N.S. Wulfson*

Scientific Research Institute of Organic Intermediate Products and Dyes Moscow, USSR

+ To whom correspondence should be addressed

Received June 20, 1975.

It has been shown that the quantum yield of the photochemical conversion of adenine and the corresponding nucleosides and nucleoside 5'-phosphates in liquid (pH 5.6 and 2.0) and frozen aqueous solutions do not exceed 10–4.

The quantum yield of the photoconversion of guanine-containing nucleosides and nucleoside 5'-phosphates in liquidaqueous solution (pH 5.6) after removal of oxygen by passing through nitrogen and in the frozen state do not exceed 0.3 x 10–4. The quantum yield in oxygen-containing liquidaqueous solutions increase to 0.3 x 10–3, i.e. to values commensurate with the quantum yield of pyrimidine photolysis.

*Shemyakin Institute of Bioorganic Chemistry Ac. Sci. USSR, Moscow 117312, ul Vavilova 32, USSR


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