dna molecule

Biologists Discover Motor Protein That Rewinds DNA

admin — Sat, 01 Nov 2008 21:15:02 -0500

Biologists have discovered the first of a new class of cellular motor proteins that "rewind" sections of the double-stranded DNA molecule that become unwound, like the tangled ribbons from a cassette tape, in "bubbles" that prevent critical genes from being expressed.

First DNA Molecule Made Almost Entirely Of Artificial Parts

admin — Mon, 07 Jul 2008 11:15:07 -0500

Chemists in Japan report development of the world's first DNA molecule made almost entirely of artificial parts. The finding could lead to improvements in gene therapy, futuristic nano-sized computers, and other high-tech advances, they say.

'Addicted' Cells Provide Early Cancer Diagnosis

admin — Sat, 14 Jun 2008 10:30:20 -0500

Scientists have detected subtle changes that may make the bowel more vulnerable to tumor development. One of the mechanisms controlling gene activity is the "epigenetic code," a set of chemical tags attached to the DNA molecule. Changes in the epigenetic code may begin to occur in apparently normal tissues, and the scientists are investigating whether diet could control these changes and delay or reverse the onset of cancer.

Weizmann Institute scientists build a better DNA molecule

admin — Tue, 27 May 2008 00:00:00 -0500

(Weizmann Institute of Science) Scientists at the Weizmann Institute of Science demonstrate that a mathematical concept called recursion can be applied to constructing flawless synthetic DNA molecules. The ideal molecules are created in successive rounds in which faultless segments are lifted from longer, error-containing DNA strands and assembled anew.

Real-time Observation Of DNA-repair Mechanism

admin — Sat, 24 May 2008 15:30:29 -0500

For the first time, researchers have witnessed the spontaneous repair of damage to DNA molecules in real time. They observed this at the level of a single DNA molecule. Insight into this type of repair mechanism is essential as errors in this process can lead to the development of cancerous cells.

Real-time observation of the DNA-repair mechanism

admin — Thu, 22 May 2008 00:00:00 -0500

(Delft University of Technology) For the first time, researchers at Delft University of Technology have witnessed the spontaneous repair of damage to DNA molecules in real time. They observed this at the level of a single DNA molecule. Insight into this type of repair mechanism is essential as errors in this process can lead to the development of cancerous cells. Researchers from the Kavli Institute of Nanoscience Delft publish this in the leading scientific journal Molecular Cell.