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Tag: "systems" at biology news

Instruction manual for creating a molecular nose

...ing membrane proteins to artificial lipid membrane systems that mimic natural cell membranes from a statu nascendi, and the membrane proteins actually did simply insert themselves into the artificial membranes. The odorant receptors selected by the researchers were a type of G-protein coupled receptor taken ...

Researchers from the UGR use a bacterium to obtain biopreservatives from food

...ation is an innovative method in food-preservation systems based on the use of microorganisms or their metabolic products to inhibit or destroy undesirable microorganisms. Marina Sánchez Hidalgo, member of the research group and author of the doctoral thesis entitled 'Caracterización de variantes de la en...

Researchers develop technique for bacteria crowd control

...operties of collective and organized motion in the systems of interacting self-moving objects. Besides swimming bacteria, other examples include bird flocks, fish schools, motor proteins in living cell, and even swarms of communicating nano-robots. "We have presented experimental studies of collective b...

Scientists unveil piece of HIV protein that may be key to AIDS vaccine development

...odies by studying the blood of people whose immune systems appear to hold the virus at bay for long periods of time—b12 is one of these rare, broadly neutralizing antibodies. Until now, no one had succeeded in determining the detailed structure of b12 in complex with gp120. It was extremely difficult to c...

RNA enzyme structure offers a glimpse into the origins of life

...he same reaction that is carried out in biological systems by the protein known as RNA polymerase. Their findings are published in the March 16 issue of the journal Science. "An RNA-dependent RNA polymerase ribozyme is the foundation of the entire RNA World hypothesis," Robertson said. "With that, you w...

No carrier necessary: This drug delivers itself

...allenged scientists to develop innovative delivery systems that keep these drugs intact until reaching their targets. Now scientists in the University at Buffalo’s Institute for Lasers, Photonics and Biophotonics and Roswell Park Cancer Institute have developed an innovative solution in which the delivery s...

OHSU lab finds meth receptor that could lead to therapy

...you realize is that meth acts on several signaling systems and that a successful therapeutic treatment will likely require modulation of several targets simultaneously. We still have a lot to learn about how meth affects the body through this system," Grandy said. "We have our work cut out for us." ...

Global 'sunscreen' has likely thinned, report NASA scientists

... originally designed to observe clouds and weather systems that date back to 1978. The resulting data show large, short-lived spikes in global aerosols caused by major volcanic eruptions in 1982 and 1991, but a gradual decline since about 1990. By 2005, global aerosols had dropped as much as 20 percent from ...

Scientists to track impact of Asian dust and pollution on clouds, weather, climate change

...There are a lot of tools that work well in simpler systems or in isolated nerve cells, but the findings are often difficult to translate into an intact mammalian brain," Ehlers said. "This new model opens up whole new avenues for study. We may reach a future where brain injuries, spinal cord damage, neuron l...

Common algae helps illustrate mammalian brain electrical circuitry

...There are a lot of tools that work well in simpler systems or in isolated nerve cells, but the findings are often difficult to translate into an intact mammalian brain," Ehlers said. "This new model opens up whole new avenues for study. We may reach a future where brain injuries, spinal cord damage, neuron l...

Gallium: A new antibacterial agent?

...hemically similar to Fe and can disrupt biological systems by substituting for Fe, inhibits the in vitro growth of Pseudomonas aeruginonsa; even multidrug resistant strains of P. aeruginonsa isolated from individuals with cystic fibrosis. Ga also prevented P. aeruginonsa forming biofilms, the multi-cellular ...

Producing medicines in plant seeds

...mount. This is a huge proportion compared to other systems - normally, scientists succeed in replacing only 1% of the plant's proteins by the desired protein. Plant seeds are especially attractive as production units. In addition to a high production capacity, they offer other important advantages over o...

Application of Genomatix in silico methods reveals novel cancer associated genes

Genomatix Software GmbH, an in silico systems biology company with headquarter in Munich (Germany), released today that researcher in Dublin, Ireland and Boston, U.S.A. identified novel cancer associated genes, based on strategies and products developed and promoted by Genomatix. Experimental ve...

Computer scientists join in search for ivory-billed woodpecker

...m Cornell's Laboratory of Ornithology to volunteer systems he and Song were developing through their project, Collaborative Observatories for Natural Environments (CONE). "Cornell's ornithology lab and Arkansas Game and Fish are crucial members of this team," Goldberg said. "They've been leading the se...

New cigarette designs don't offer lower predicted cancer risks

...Ph.D., professor in environmental and biomolecular systems at OHSU's OGI School of Science & Engineering, and a member of the OHSU Cancer Institute. "People have known for a long time that there are carcinogens in tobacco smoke, but if you look at the levels in conventional cigarettes and expected pot...

Gene chips forecast ecological impacts of climate change

...e. The physical factors that are changing in these systems are more than temperature alone. Due to the interaction of oceans with the atmosphere and the role of the ocean in carbon dioxide sequestration, marine ecosystems will experience temperature changes combined with changes in ocean pH –?ocean acidifica...

The origin of the brain lies in a worm

... today. Many animals have evolved complex nervous systems throughout the course of evolution, but their arch...e and how it gave rise to the diversity of nervous systems seen in animals today is what Detlev Arendt and his group study at EMBL. To do so, they investigate ...

Brain networks strengthened by closing ion channels

...ADHD). "Our data reveal how the brain's arousal systems influence the cognitive networks that subserve working memory-which plays a key role in abstract thinking, planning, and organizing, as well as suppressing attention to distracting stimuli," said http://info.med.yale.edu/neurobio/arnsten/arnsten.htm...

Long-lived deep-sea fishes imperiled by technology, overfishing

...ys at a time. And sophisticated global positioning systems (GPS) and fish finders can target schools of fish or seamounts with ease. "One reason that many of these fish species were fished sustainably in the past is that we couldn't fish all of the places all of the time," Heppell said. "That isn't necess...

Batten down the hatches against HIV

...lencing effect to the cells than current transport systems based on liposomes. T-cells are one of the types of white blood cells important for a good immune defense; they detect and destroy virus-affected cells. However, they themselves are among the targets attacked by HIV. In order to enter into a T-cel...

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