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Dark state and DNA

Chemists at Ohio State University have probed an unusual high-energy state produced in single nucleotides - the building blocks of DNA and RNA - when they absorb ultraviolet (UV) light.

9 Jan 2007

Rapid and label-free nanomechanical detection of biomarker transcripts in human RNA

Researchers from the Swiss Nanoscience Institute in Basel have developed a rapid method to detect the activity of a gene involved in controlling tumor growth.

18 Dec 2006

Researchers uncover new way in which the aging process is linked to DNA damage

Researchers have uncovered a new way in which the aging process is linked to DNA damage--which occurs normally as a result of cell metabolism and environmental influences--and the various ways in which cells repair that damage.

23 Oct 2006

Useful insights into mechanisms of catecholaminergic polymorphic ventricular tachycardia

World Congress of Cardiology Report - Familial genetic defects are responsible for several cases of unexpected sudden cardiac death in young and otherwise healthy individuals.

5 Sep 2006

Mitochondrial DNA sequencing tool updated

High-tech laboratory tools, like computers, are often updated publicly as their analytical capabilities expand. In the September issue of the Journal of Molecular Diagnostics, NIH grantees report they have developed a second generation "lab on a silicon chip" called the MitoChip v2.0 that for the first time rapidly and reliably sequences all mitochondrial DNA.

30 Aug 2006

RNA gene found to be one of the fastest evolving regions in human genome

Since completing the sequencing of the chimpanzee genome last year, geneticists have spent many hours comparing human DNA sequences to those of our closest evolutionary relative, looking for the differences that distinguish the two species.

16 Aug 2006

Leukemia gene changes genetic packaging

A signaling system involved in many forms of leukemia and lymphoma is more powerful than scientists have thought, exerting control over our genes by affecting whole swaths of chromosomes in global fashion.

6 Aug 2006

Timing of FDA Plan B announcement questioned

The Center for Reproductive Rights issued the following statement from Nancy Northup, president of the Center for Reproductive Rights, in response to the FDA announcement regarding Plan B.

2 Aug 2006

From DNA to RNA to protein

Of the thousands of proteins produced in our cells, few are as important as the enzyme RNA polymerase (RNAP), which has the unique ability to faithfully copy genetic information from DNA.

18 Jun 2006

Better understanding of DNA damage

Researchers have known for years that damaged DNA can lead to human diseases such as cancer, but how damage occurs - and what causes it - has remained less clear.

6 Jun 2006

Genes variations raise risk of heart disease after treatment for childhood cancer

Gene variations may raise the risk that survivors of childhood cancer will suffer congestive heart failure as a complication of drugs they received during cancer treatment.

5 Jun 2006

Search for gene search for sporadic amyotrophic lateral sclerosis

Though it's the more common form of the disease, sporadic Amyotrophic Lateral Sclerosis (ALS), which affects roughly 90 percent of those living with the fatal neurodegenerative illness, has been the one less studied, simply because, unlike familial ALS, no genes have turned up.

17 May 2006

Scientists create leaner and meaner E. coli

By stripping the E. coli genome of vast tracts of its genetic material - hundreds of apparently inconsequential genes - a team of Wisconsin researchers has created a leaner and meaner version of the bacterium that is a workhorse of modern biology and industry.

3 May 2006

Research sheds light on eating disorders, compulsive gambling and drug abuse

Researchers at Harvard Medical School (HMS) report in the April 23 issue of Nature that they have identified neurons that encode the values that subjects assign to different items. The activity of these neurons might facilitate the process of decision-making that occurs when someone chooses between different goods.

23 Apr 2006

WRN exonuclease structure and molecular mechanism imply an editing role in DNA end processing

A team of scientists from Lawrence Berkeley National Laboratory and the Scripps Research Institute has determined the crystal structure and molecular mechanisms of a key part of WRN, a protein that protects humans from premature aging and cancer.

23 Apr 2006

New research shows specific mechanisms may not exist for facial recognition

New research from Georgetown University Medical Center suggests that the brain may not have developed a specific ability for "understanding faces" but instead uses the same kind of pattern recognition techniques to distinguish between people as it uses to search for differences between other groups of objects, such as plants, animals and cars.

19 Apr 2006

Federal monitoring system underestimates work-related injury and illness

The current national surveillance system may miss two-thirds of the total number of occupational injuries and illnesses, suggests a study in the April Journal of Occupational and Environmental Medicine, official publication of the American College of Occupational and Environmental Medicine (ACOEM).

17 Apr 2006

DNA "dark state" findings help explain evolution of life

Chemists at Oregon State University have pioneered a controversial theory about how supposedly-stable DNA bases can be pushed into a "dark state" in which they are highly vulnerable to damage from ultraviolet radiation - an idea that has challenged some of the most basic concepts of modern biochemistry.

11 Apr 2006

New discovery could help improve some forms of chemotherapy

The research looked at XPB helicase from an archaea, a single cell organism similar to bacteria. Helicases are enzymes that unwind or separate the strands of the nucleic acid double helix, an action that is critical to transcription and nucleotide excision repair (NER), as well as other cell processes.