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

David L. Mitchell, Jin Jen, James E. Cleaver

Research output: Contribution to journalArticle

153 Citations (Scopus)

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 then 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< >T) to dimers containing cytosine (C< >T, T< >C, C< >C) was greater after UVC compared to UVB irradiation.

Original languageEnglish (US)
Pages (from-to)225-229
Number of pages5
JournalNucleic Acids Research
Volume20
Issue number2
StatePublished - 1992
Externally publishedYes

Fingerprint

Pyrimidine Dimers
Thymine
Cytosine
Dimer
Ultraviolet Rays
Ultraviolet
Irradiation
Dimers
Specificity
Proof by induction
DNA
Radiation
Cyclobutanes
Pyrimidines
Purines
Guanine
Adenine
Nucleotides
Light sources
Damage

ASJC Scopus subject areas

  • Genetics
  • Statistics, Probability and Uncertainty
  • Applied Mathematics
  • Health, Toxicology and Mutagenesis
  • Toxicology
  • Genetics(clinical)

Cite this

Sequence specificity of cyclobutane pyrimidine dimers in DNA treated with solar (ultraviolet B) radiation. / Mitchell, David L.; Jen, Jin; Cleaver, James E.

In: Nucleic Acids Research, Vol. 20, No. 2, 1992, p. 225-229.

Research output: Contribution to journalArticle

Mitchell, David L. ; Jen, Jin ; Cleaver, James E. / Sequence specificity of cyclobutane pyrimidine dimers in DNA treated with solar (ultraviolet B) radiation. In: Nucleic Acids Research. 1992 ; Vol. 20, No. 2. pp. 225-229.
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