Latest Molecular genetics Stories

Unlocking DNA Repair Secrets
2012-10-31 12:53:16


2012-10-04 13:41:21

Scientists in Canada and the United States have used three-dimensional imaging techniques to settle a long-standing debate about how DNA and structural proteins are packaged into chromatin fibers. The researchers, whose findings are published in EMBO reports, reveal that the mouse genome consists of 10-nm chromatin fibers but did not find evidence for the wider 30-nm fibers that were previously thought to be important components of the DNA architecture. “DNA is an exceptionally long...

Secrets Of Genetic Switch Unraveled
2012-08-31 16:46:43

When an invading bacterium or virus starts rummaging through the contents of a cell nucleus, using proteins like tiny hands to rearrange the host´s DNA strands, it can alter the host´s biological course. The invading proteins use specific binding, firmly grabbing onto particular sequences of DNA, to bend, kink and twist the DNA strands. The invaders also use non-specific binding to grasp any part of a DNA strand, but these seemingly random bonds are weak. Emory University...

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