Electron Spin Resonance of Irradiated DNA
- 16 April 1965
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 148 (3668), 378-380
- https://doi.org/10.1126/science.148.3668.378
Abstract
When DNA is irradiated by ultraviolet light a paramagnetic damage center is formed in the thymine bases. The structure of this free radical has been determined by electron spin resonance and consists of a hydrogen addition at the carbon No. 6 position. The rate of formation of the radical is enhanced by water vapor, and it is quenched by paramagnetic ions bound to the DNA.Keywords
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