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- W2057753744 abstract "The fluorescence of benzo[α]pyrene or perylene solubilized in DNA solutions of low ionic strength is strongly quenched either by addition of silver ions at a ratio Ag+:DNA phosphate < 0.15 or by lowering the pH from 7.5 to 5. In poly d(A-T) solutions the effects are much less marked than in DNA. Cu2+ ions are also effective quenchers in this system and Co2+ and Ni2+ have some activity but little effect is seen with Mn2+, Zn2+, Cd2−, Mg2+ or Na+ ions. The results establish that GC pairs play the dominant role in these quenching reactions and show that the DNA bases have a specific role in the DNA/hydrocarbon interaction. They also suggest that GC-containing sites are the major sites of physicochemical fixation of hydrocarbons to DNA. No gross difference in the general nature of the DNA binding sites was found for the carcinogenic benzo[α]pyrene and non carcinogenic perylene." @default.
- W2057753744 created "2016-06-24" @default.
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- W2057753744 date "1970-07-01" @default.
- W2057753744 modified "2023-09-23" @default.
- W2057753744 title "Influence of pH and Metal Ions on the Fluorescence of Polycyclic Hydrocarbons in Aqueous DNA Solution" @default.
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- W2057753744 doi "https://doi.org/10.1111/j.1432-1033.1970.tb00325.x" @default.
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