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Tag: "site" at biology news

NASA satellite data helps assess the health of Florida's coral reef

...eef zones. After the findings from each sampling site are analyzed over the next few months, scientists will be able to identify the factors, including genetics, that may make some types of coral resilient to adverse conditions and bleaching. By mapping these healthy regions, officials can then attempt ...

New findings could lead to vaccine for severe malaria

...They therefore collected and analysed placentas on site in Uganda. "Most of the parasites we studied could bind to three different receptors in the placenta," she says. "This would mean that a future vaccine cannot be based on the principle of one protein-one receptor, as was previously believed." Now t...

How mammals fuel milk production may have implications for cancer

...m the structures that will ultimately serve as the site of milk synthesis, the researchers said. Second, mammary epithelial cells must coordinately activate multiple biosynthetic pathways—as well as deactivate pathways that break lipids down—in order to have the metabolic capacity to synthesize large quan...

Gene-bender proteins may sway to DNA

...ing the correct bending protein to the appropriate site on the DNA. Ansari said the research adds to the basic understanding of how proteins recognize a specific binding site. "Gaining better insights into protein-DNA interactions that control all aspects of gene regulation may prove useful for ratio...

RNA map provides first comprehensive understanding of alternative splicing

...ble the right way and use an alternatively spliced site that is otherwise poorly utilized. By offering a global understanding of how alternative splicing works across the genome, the map has implications for the treatment of a growing list of human neurologic diseases in which RNA regulation, and parti...

One signal elicits thousands of answers

...could be independent, with phosphorylation of each site occurring separately from the others. It could als...egree of phosphorylation should always be measured site specifically rather than for the protein as a whole". For the efficient use of their results the res...

Drug can quickly mobilize an army of cells to repair injury

...marrow from a patient and then injecting it at the site of injury will be effective. But Link feels it may...ells find their way through the circulation to the site of injury or low oxygen," he says. "That way you enhance a normal repair mechanism instead of using ...

Regulating the nuclear architecture of the cell

...ibosome factory, which is situated at the specific site in the heterochromatin where ribosomal DNA -- consisting of large genes, repeated 300 to 400 times -- codes for the production of the RNA from which ribosomes are built. "This work on pathways that control the organization of the nucleolus is t...

Pourquié lab identifies genes involved in formation of vertebral precursors

...d on Science Express, the advanced publication Web site of Science Magazine on Nov. 9, 2006. Dr. Pourquié's lab has long studied the formation of the spine and the role of an internal mechanism -- the clock oscillator -- that regulates the formation somites, the precursors of vertebrae. In their most...

Stem cells found in adult hair follicles may provide alternative to embryonic stem cells

... integrated into the spinal cord, remaining at the site of transplantation and not forming tumors," Dr. Sieber-Blum says. According to Dr. Sieber-Blum, subsets of the epidermal neural crest stem cells express markers for oligodendrocytes, the nerve-supporting cells that are essential for proper neuron f...

Shrinking ponds signal warmer, dryer Alaska

... the permafrost is continuous, and a more maritime site south of the Alaska Range. All ponds in the study regions in subarctic Alaska showed a reduction in area of between 4 and 31 percent, with most of the change occurring since the 1970s. The ponds in the Arctic Coastal Plain showed negligible change....

U-M researchers use nanoparticles to target brain cancer

...wice the amount of the contrast agent at the tumor site when using targeted nanoparticles, suggesting the nanoparticles were attracted to the tumor site. The advantage of this delivery system is the ability to attack the tumor with higher doses of a drug while sparing normal tissue from a drug's toxic...

Genetic study of Neanderthal DNA reveals early split between humans and Neanderthals

...s where the derived allele matches Neanderthal. No site in the data set appears to be of this type." However, Pritchard said, "We do not exclude the possibility of modest levels of genome admixture." Pritchard's team suggests that human and Neanderthal shared a common ancestor about 706,000 years ago,...

Motorola researchers develop selective sensors based on carbon nanotubes

...w of the article is available at the journal's web site ( www3.interscience.wiley.com/cgi-bin/jissue/10962734 7). "Our sensor is based on the novel properties of peptides and carbon nanotubes," Tao explained. "Peptides can be used to recognize and detect various chemical species with high sensitivity a...

Novel regulatory mechanism identified for key tumor suppressor p53

...uthors. "What we found was that methylation at the site we identified prevents p53 from binding to DNA, wh... In that study, a methyl group added to a specific site on p53 called K372 was shown to activate the tumor-suppressor molecule rather than repress it. The...

Nanotech tools yield DNA transcription breakthrough

... RNA and then breaks free from its initial binding site to move along DNA to continue synthesizing RNA. ... machine remains stationary at its initial binding site and "reels in" adjacent DNA segments, unwinding these segments and pulling the unwound DNA strands i...

New engineered drug may offer prolonged arthritis relief

...ge clinical gain," she said. By remaining at the site of disease, the drug also might cause fewer negative side effects than the unmodified drug, the researchers added. The team reported an initial proof-of-concept study on Saturday, Oct. 14, at the Biomedical Engineering Society annual meeting, in Ch...

Vaccine for brain tumors shows promising results

...surround and support nerve cells. The most common site of involvement of a glioma is the brain. Malignant glioma is currently a fatal disease. The trial results are being presented at the Immunotherapy Task Force Meeting, sponsored by the Society of Neuro-Oncology and the Joint Section of Tumors, du...

Patients can report statins' adverse effects on new web site

A new web site at the University of California, San Diego (UCSD) ...nswers about what to expect. We developed this web site as a tool to gather information on side effects, and to help answer these questions," said Golomb. ...

Extraordinary life found around deep-sea gas seeps

...ed a towed video and still camera system over each site to identify seep organisms and the extent of the seafloor they covered. With the live video feed, the scientists observed 30?0 cm long tube worms emerging from beneath limestone boulders and slabs lying at the core of the seeps. Around the rocks w...

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