Proton Tunneling in Radiation-Induced Mutation

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Science  30 Oct 1964:
Vol. 146, Issue 3644, pp. 649-650
DOI: 10.1126/science.146.3644.649


The equilibrium proton distribution and tunneling rate in the N-H. . . N hydrogen bond of the guanine-cytosine base pair have been calculated quantum mechanically for the ground state, a charge-transfer excited state, and positive and negative ionic states. These results are consistent with the idea that tautomeric rearrangement can be a cause of radiation induced mutation or carcinogenesis.

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