The environment surrounding DNA plays a surprisingly important role in determining the health of a cell.
Researchers at the Georgia Institute of Technology discovered that the sodium ions in cells control the migration of radical cations through DNA. Also known as electron holes, these cations ultimately reach locations where they may initiate reactions that damage the genetic code.
"It is clear that we must consider both the DNA and its environment," says researcher Gary Schuster.
Among other things, the findings may help explain why some people exposed to cancer-causing agents never develop the disease.
-Georgia Tech, Popular Mechanics
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