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. 1992 Jan 25;20(2):225-9.
doi: 10.1093/nar/20.2.225.

Sequence specificity of cyclobutane pyrimidine dimers in DNA treated with solar (ultraviolet B) radiation

D L Mitchell  1 , J Jen, J E Cleaver
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Free PMC article

Sequence specificity of cyclobutane pyrimidine dimers in DNA treated with solar (ultraviolet B) radiation

D L Mitchell et al. Nucleic Acids Res. .
Free PMC article

Abstract

Cyclobutane pyrimidine dimers were quantified at the sequence level after irradiation with solar ultraviolet (UVB) and nonsolar ultraviolet (UVC) light sources. The yield of photoproducts at specific sites was dependent on the nucleotide composition in and around the potential lesion as well as on the wavelength of ultraviolet light used to induce the damage. Induction was greater in the presence of 5' flanking pyrimidines than purines; 5' guanine inhibited induction more than adenine. UVB irradiation increased the induction of cyclobutane dimers containing cytosine relative to thymine homodimers. At the single UVC and UVB fluences used, the ratio of thymine homodimers (T mean value of T) to dimers containing cytosine (C mean value of T, T mean value of C, C mean value of C) was greater after UVC compared to UVB irradiation.

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References

    1. Mutat Res. 1979 Oct;62(3):533-8 - PubMed
    1. Photochem Photobiol. 1982 Feb;35(2):269-74 - PubMed
    1. Photochem Photobiol. 1989 Jun;49(6):805-19 - PubMed
    1. Proc Natl Acad Sci U S A. 1985 Oct;82(19):6622-6 - PubMed
    1. Photochem Photobiol. 1988 Sep;48(3):353-6 - PubMed

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