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THE VACUUM ULTRAVIOLET PHOTOCHEMISTRY OF NUCLEOTIDES
Author(s) -
Dodonova N. Ya.,
Kiseleva M. N.,
Remisova L. A.,
Tsycganenko N. M.
Publication year - 1982
Publication title -
photochemistry and photobiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.818
H-Index - 131
eISSN - 1751-1097
pISSN - 0031-8655
DOI - 10.1111/j.1751-1097.1982.tb03821.x
Subject(s) - photodissociation , chemistry , guanosine , photochemistry , glycosidic bond , quantum yield , nucleotide , aqueous solution , guanosine monophosphate , fluorescence , organic chemistry , biochemistry , physics , gene , enzyme , quantum mechanics
— Photodestruction of nucleotides by vacuum UV (λ < 200 nm) and near UV radiation in thin films has been studied; the products were analyzed by thin‐layer chromatography. Vacuum UV photolysis leads to the rupture of the N‐glycosidic bond with liberation of bases, the quantum yield of the process being about 2 × 10 ‐4 for guanosine‐5'‐monophosphate. No bases have been found among the products of near UV photolysis. Vacuum UV irradiation of aqueous solutions of adenosine‐5'‐monophosphate and guanosine‐5'‐monophosphate produces, along with bases, some other fluorescent substances. The identity of photoproducts of vacuum UV photolysis with those of γ‐radiolysis is established. The mechanism of photochemical conversion is discussed.