For the first time, researchers have witnessed how a missing enzyme works at the atomic level to repair sun-damaged DNA.
In the early online edition of the journal Nature, Ohio State University physicist and chemist Dongping Zhong and his colleagues describe how they were able to observe the enzyme, called photolyase, inject a single electron and proton into an injured strand of DNA. The two subatomic particles healed the damage in a few billionths of a second.
The discovery holds promise for future sunburn remedies and skin cancer prevention.
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