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Scientists get first glimpse at how plants, most animals repair UV-damaged DNA

...damage site within a cell nucleus, said Zhong. But until his latest series of experiments, nobody knew how ...e pocket delays the electron's exit from the dimer until just after the repair is done. As far as scientists can tell, photolyase's only function is to repa...

New book expands biological classifications to account for 'alien' life

...u wouldn't have dinosaurs on the tree of life. And until now there hasn't been any place to put RNA life." In the current popular classification system the highest levels are three domains ?bacteria, archaea and eukarya, the last of which includes all animals. Ward's plan places those three domains within...

Stolen gene allows insect virus to enter cells

...ed. Indeed, they found that the f gene stays quiet until the third and final stage of a maggot's development, then begins to produce F proteins, which persist into adulthood. "f seems to be developmentally regulated, like a lot of Drosophila genes," says Blissard. Exactly what role the F protein plays in f...

A 'dimmer switch' for genes

... previously had been shown to build up on proteins until a certain number accumulated. The result, according to the study, has been described in the past as a sharp on-off switch of protein activity. "What we found was that each time we added a phosphate to a particular unstructured region of Ets-1, there...

Purdue researchers find key to rice blast fungus

... an appressorium. This bubble-like structure grows until it has so much pressure inside that it blasts through the plant's surface. "The penetration structure has enormous force, called turgor pressure, that is 40 times the pressure found in a bicycle tire," Xu said. "It's like driving nails through the p...

Preventing a pandemic: Study suggests strategies for containing a flu outbreak

...ast slow the pandemic, helping to reduce morbidity until a well-matched vaccine could be produced," she said. The danger of avian flu is that the virus could develop into a new strain that could be transmitted among humans. The virus might mutate, or it might jump over to a human already infected with the...

California computer scientists double volume of data in NIH biotech repository

... 1,000 times faster than the prevailing technology until now. Their findings are featured in a special issue of the journal Genome Research, published today. "This information provides an invaluable resource for understanding the structure of human genetic variation," said lead author Eleazar Eskin, a p...

U-M scientists say fused genes trigger the development of prostate cancer

... 1,000 times faster than the prevailing technology until now. Their findings are featured in a special issue of the journal Genome Research, published today. "This information provides an invaluable resource for understanding the structure of human genetic variation," said lead author Eleazar Eskin, a p...

Bone marrow stem cells may heal hearts even years after heart attacks

...of Cardiology. "This new therapy is able to treat until now irreversible heart complaints and function dis...aged heart muscle cells. "It should be noted that until now only 18 patients have been transplanted and were compared to a representative control group. Thi...

UQ scientists break new ground in fight against infection & chronic disease

...re is still a long way to go (upwards of 10 years) until any new drugs begin to emerge on the market." ...

Anthrax stops body from fighting back, study shows

...antibiotics, but people often don't seek treatment until it is too late,said Philip C. Hanna, an associate professor of microbiology and immunology at the University of Michigan Medical School. "A person can die before they know they are terribly sick at all," Hanna said. Symptoms of inhalation anthrax r...

Oldest dated evidence of cattle in southern Africa found

...ea that was primarily occupied by foraging peoples until recently. The findings, to be published in the August/October issue of Current Anthropology, are also interesting in the broader context of the spread of domestic livestock throughout Africa. Whereas livestock had spread into northern Kenya in East ...

Plant genes identified that can form basis for crops better adapted to environmental conditions

... for the development of strong, healthy crops. But until recently, exactly which genes are involved in the development of roots was still a mystery. Scientists from the Flanders Interuniversity Institute for Biotechnology (VIB) connected to Ghent University have now analyzed a complete plant genome in orde...

PLoS Medicine publishes first trial of effect of male circumcision on HIV infection

...ed and the other group was to remain uncircumcised until after the completion of the trial 21 months later. The circumcised men were instructed to abstain from sexual activity for 6 weeks after the operation. The plan was to follow the participants over 21 months, testing them for HIV at months 3, 12 and 2...

Plants reveal a secret and bring researchers nearer a cleaner future

...nown as "Kok cycle"- but only four had been proved until recently. With the help of the ESRF, scientists have been able to identify the missing state, which is particularly important because it is directly involved in the molecular oxygen formation. They suggest, furthermore, an extension of the "Kok cycle...

Restaurant seafood prices since 1850s help plot marine harvests through history

...ds as the Gulf of Maine and Newfoundland, prolific until comparatively recently. Other research to be show...ws prices flat at a 2004 equivalent of about $7.00 until the late 1930's and a second jump in inflation-adjusted prices in the late 1950's. Since the late 19...

Protein behind autumn color splendor identified

...acids are stored in the trunk, branches, and roots until next year, when they are used as building blocks for new leaves. Other proteins, so-called proteases, have the task of degrading these proteins, and there is extensive research under way in this field. For example, the 2004 Nobel Prize went to three ...

Chernobyl: The true scale of the accident

... in the three countries have been taken out of use until remediation is undertaken. A number of measures applied to forests in affected countries and in Scandinavia have reduced human exposure, including restrictions on access to forest areas, on harvesting of food products such as game, berries and mushr...

Kenya halts first field trials of GM maize

... lost," said Mugo. "But the main war will continue until we help African maize farmers overcome the pest". Stem borers destroy up to 12 per cent of maize growing in Kenya, amounting to US$76 million in lost harvests per year. The IRMA project, which began six years ago, aims to develop both conventional ...

'Smart' nanoprobes light up disease

...attached to the gold particles. They remained dark until the nanostructures were exposed to collagenase after which the luminescence steadily returned. Ultimately, the researchers hope to pair a series of quantum dots, each with a unique NIR optical signature, to an index of linker proteases. "There is c...

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