Electron Spin Resonance of Gamma-Irradiated Oriented DNA Prepared by Wet Spinning
- 15 September 1967
- journal article
- research article
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 157 (3794) , 1317-1319
- https://doi.org/10.1126/science.157.3794.1317
Abstract
When moist, oriented DNA is gamma-irradiated and its electron spin resonance spectrum is recorded at 77°K, an unresolved spectrum is obtained, the amplitude of which is strongly dependent on the angle between the direction of the DNA helices and the field. Annealing at 199°K gives an eight-line thymine-like spectrum which also has a marked angular dependence. For dry, oriented DNA, the unresolved spectrum dominates even at room temperature, and the spectra exhibit lower degrees of anisotropy.Keywords
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