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Tag: "parallel" at biology news

Simulations unravel outer membrane transport mechanism

... (TBDT) contains a beta-barrel domain: a series of parallel sheets that form a tunnel through which large molecules can pass. Another region of the protein, the luminal domain, clogs this barrel until the cell is ready to allow large molecules to pass through. Crystallographic studies had shown that TonB b...

Eavesdropping comes naturally to young song sparrows

...than interacting face-to-face with an adult. In a parallel line of research, Beecher and his colleagues are tracking song sparrows by radio in the field. Preliminary analysis of the tracking data suggests that young birds don’t have many direct interactions with adults, and so are likely to be learning thei...

How brain pacemakers erase diseased messages

...rsts, they showed. The model's findings closely parallel the clinical responses of patients, who typically experience the greatest relief from symptoms when their devices are tuned by physicians to deliver rapid pulses, Grill said. Patients' symptoms can actually worsen when the devices are dialed to a slo...

New technique will produce a better chromosome map

...ene" chromosomes, each built up of more than 1,000 parallel copies of DNA strands. When stained, condensed, dark bands and lighter regions (interbands) give the chromosomes a striped appearance. For more than 70 years, cytogeneticists have used a hand-drawn map of the bands of fruit fly polytene chromosome...

LIAI scientists make important finding on cytomegalovirus transmission

...nimals. The findings of the Ware and Croft team parallel those of LIAI researcher Matthias von Herrath, M.D., who last year announced that he had successfully eliminated a chronic virus infection in mice by blocking the IL-10 receptor. "Dr. von Herrath’s findings suggested that the IL-10 molecule plays a ...

Magnetic computer sensors may help study biomolecules

...dividual biomolecules simultaneously for massively parallel medical and forensic studies—a sort of magnetic random access memory (MRAM) for biosciences. Spin valves are made by stacking thin layers of materials with different magnetic properties. Their net magnetization can be switched on and off by applyi...

Genome of yellow fever/dengue fever mosquito sequenced

... and locations of mosquito genes in the genome. In parallel to sequencing DNA in chromosomes, scientists have also sequenced large amounts of messenger RNAs collected from different mosquito tissues at distinct developmental stages. Matching a messenger RNA to a predicted gene will validate authenticity of th...

MIT's ocean model captures diversity of underwater forests

...tion -which took four to five days on a cluster of parallel computers-is a phytoplankton community with members that are characteristic of observed phytoplankton communities, including plants similar to prochlorococcus that are extremely abundant in the warm mid-latitude Atlantic and Pacific oceans. Chish...

Sandia researchers take new approach to studying how cells respond to pathogens

...vity. The microfluidic platform is fast and highly parallel and can perform hundreds of measurements 50 to 100 times faster than alternate methods. Singh says the end goal is to make a benchtop miniaturized system expected in about two years. It would be placed in Biosafety Level 3 or 4 labs to study immun...

UCI scientists reconstruct migration of avian flu virus

...tic sequences the scientists analyzed suggest that parallel evolution of different H5N1 strains lets the virus...to spread the infection to the next location. This parallel evolution ?the independent evolution of similar traits ?enables H5N1 to spread quickly, the scientis...

How appetite-stimulating brain cells work overtime during fasting

...enzyme's activity and local thyroid production, in parallel with increased UCP2 activity. This fasting-induced, T3-mediated UCP2 activation resulted in mitochondrial proliferation in the neurons, an event that was critical for the brain cells' increased excitability and consequent rebound feeding by the a...

Wheat can fatally starve insect predators

...at increased numbers of larvae on a plant caused a parallel increase in lectin. This shows that wheat plant responses to these insects are localized and take less energy than a more global resistance response. "Figuring out some of the ways that a plant is able to respond to insects with resistance will be...

Out of Africa -- Bacteria, as well

...Hanover Medical University have found signs of the parallel evolution of man and H. pylori. Using mathematical simulations, the researchers demonstrated that H. pylori must have left East Africa at the same time as man - around 60,000 years ago. This astonishing conformity was uncovered by scientists when the...

Are journal rankings distorting science?

...but we should attempt to refine them and debate in parallel how we can track academic careers and encourage fewer, but better studies that affect the wider community, he concludes....

Biologically inspired sensors can augment sonar, vision system in submarines

...r superior to human engineering, having a man-made parallel of the biological system allows us to learn much about both basic science and engineering," Liu said. "To actively learn from biology at the molecular, cellular, tissue and organism level is still the bigger picture."...

MIT's ocean model precisely mimics microbes' life cycles

...tion -which took four to five days on a cluster of parallel computers-is a phytoplankton community with members that are characteristic of observed phytoplankton communities, including plants similar to prochlorococcus that are extremely abundant in the warm mid-latitude Atlantic and Pacific oceans. Chish...

Virginia Tech's System X supercomputer provides super tool for simulation of cell division

...han 20,000 CPU hours on System X, a 2200 processor parallel computer, using two new algorithms, DIRECT (DIvidi...ginia Tech computer science team created massively parallel versions of a deterministic global search algorithm, DIRECT, and a deterministic local search algori...

Prion disease treatable if caught early

...so, studies of the animals?brain tissue revealed a parallel impairment of signaling among brain cells. However, when the researchers manipulated the animals to deplete their brains of the prion protein, their memory ability and burrowing behavior recovered. Importantly, found the researchers, the signaling...

Nobel Laureate finds 'elegant' explanation for DNA transcribing enzyme's high fidelity

...s usual position some distance away until it rests parallel to the NTP. It then forms a network of interactions—some 20 to 30 in all—with components of the NTP, a process that serves to “recognize all features of the NTP in the addition site and detect its precise location,?the researchers reported. “The sp...

Uncovering DNA's 'sweet' secret

...ntiparallel fashion - unlike DNA which can adopt a parallel orientation. Finally,the irregular spaces between the "rungs" prevent homo-DNA from taking onthe uniform structure DNA uses to store genetic information. The findings suggest that fully hydroxylated six-carbon sugars probably would not have produce...

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