4-stranded DNA’s activity in living cells unraveled for 1st time

Two thin strands wound together in a spiraling helix: This is the iconic shape of a DNA molecule. But sometimes, DNA can form a rare quadruple-helix, and this odd structure may play a role in diseases like cancer.  Not much is known about these four-stranded DNA, known as G-quadruplexes — but now, scientists have developed […]