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Tag: "nature" at biology news

Scientists find method to pick noncompetitive animals, improve production

.... "Now we have a tool to explain how species in nature evolved in response to each other," Muir said. "It can be applied across species and can tell us how social interactions developed in the past and will develop in the future between individuals and among various animal species. "This is important ...

University of Alberta researchers unravel intricate animal patterns

... complex spatial group patterns that we can see in nature and the different ways animals communicate, has not been stated explicitly." For decades people have puzzled about how animals—fish schools, locust swarms, large flocks of birds--form large complex dynamical groups. It is clear individuals in the ...

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

...lved in biological activity and in the hydrophobic nature and thermodynamic stability of the molecule. We made this study by changing the amino acids into others with different properties." The results of this work made it possible to conclude that while some of the mutated amino acids are essential for ...

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

... Dr. Kwong, in part due to the inherently flexible nature of the chemical bonds in gp120. To overcome the problem, the investigators created a variety of gp120s and eventually made the protein stiff enough to capture a picture of it in complex with b12. They saw that b12 binds gp120 at the same point where ...

Researchers find hepatitis A and hepatitis C attack same protein to block immune defenses

...to Lemon, largely because of hepatitis C’s chronic nature and the lack of a vaccine against it. But while better sanitation has driven a decline in hepatitis A cases in the United States, Lemon said, "It’s a significant risk for many people traveling overseas, because they fail to receive the vaccine." Hepa...

New research shows that flu is a trigger of heart attacks

...the means of preventing or combating the virus, if nature doesn’t take us by surprise this year," he concluded. ...

Small molecule dervived from Rb2/p130 could act as cancer therapeutic

...no said. Giordano said because of the intrinsic nature of the compound, it can be easily reproduced as a biological drug in large quantities and does not require potentially dangerous means of delivery like viruses, as do most gene therapies; therefore Spa310 has a good chance to succeed as an anti-cance...

Scientists perform 'tricky' operation

...f this, and also due to the broad and non-specific nature of symptoms, which can range from severe to neglig...without knowing. "Furthermore, the non-specific nature (or in some cases, absence) of trichomoniasis symptoms often confuses it with other STIs, making the...

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

...o breed every year," Heppell pointed out, "so when nature throws a bad reproductive year at them, the species can survive. But the point remains that you have to have older fish to replenish the stock when those bad years come." Conversely, Heppell said, good years often can carry the population in a phe...

Antibody signal may redirect inflammation to fuel cancer

...remotely through the blood’s serum. The surprising nature of the discovery and its implications were explored in a June 2005 commentary in "Nature" (2). A review this month by Coussens and Ting-Ting Tan, PhD, a postdoctoral fellow in Coussens?laboratory, brings together many related threads of research in...

Mosquito genes explain response to climate change

...chers to simulate climatic conditions occurring in nature anywhere in the world, from the tropics to the polar regions. The newly created map contains 900 million DNA base pairs. There are three billion base pairs in humans. As various genome maps are being completed, scientists now face the task of dete...

Speeding 'fingertip' discovery -- 20 years of protein info in 1 place

...f proteins to identify nearly all chemical changes nature makes by adding phosphate to proteins manufactured in human cells. The Hopkins team then added its list of these so-called phosphorylation events to lists compiled by others and created a publicly available database on the Web - PhosphoMotif Finder...

Making mice with enhanced color vision

...circumvent thorny issues related to the subjective nature of color perception -- everyone who has had a discussion as to whether the "green" they see is the same as the "green" their friend sees can attest to this -- the researchers only tested whether the mice could discriminate among the lights. "Eac...

Walking molecule now carries packages

...ts or to deliver material. "It resembles the way nature does it: the molecule carrier transports carbon dioxide across a surface," he said. "In the human body, the molecule hemoglobin carries oxygen from and carbon dioxide to the lungs, thereby allowing us to breathe ?and to live." Bartels cautions, how...

Cells use 'noise' to make cell-fate decisions

...ional scientific thinking has been that the random nature of such fluctuations within cells interferes with the reliable operation of biological systems. However, Dr. Süel's research team hypothesized that noise in one particular genetic circuit might be beneficial, linked to a process that controls cell fa...

Scientists unravel clue in cortisol production

... continuous, the molecular production is cyclic in nature ?involving a rhythmic binding and unbinding of a protein essential to its production. The research, which increases understanding of how the brain and the endocrine system work together to regulate health, appears in the February issue of the journal...

Liposuctioned fat stem cells to repair bodies

... are best at regenerating tissue. Uncovering the nature and location of these molecular tags could allow scientists to pull off the ultimate trick of taking a patient’s own fat cells and using them for therapy, Collas told researchers gathered at the EuroSTELLS Workshop ‘Exploring Chromatin in Stem Cells?...

Stem cell therapy shows promise in regenerating damaged muscle in heart attack patients

...y are needed." Adult stem cells are designed by nature to perform tissue repair in a mature adult. It is believed that these cells can be used in patients unrelated to the donor, without rejection, eliminating the need for donor matching and recipient immune suppression. Once transplanted, the cells prom...

Researcher examines polymers created with poultry feathers

...Barone explains. Barone is taking his lead from nature to find potential solutions to these performance requirements. He is investigating the properties of polymers created from poultry feather keratin. The protein, keratin, is a major component of hair, nails, and feathers and makes them hard and strong...

Does evolution select for faster evolvers?

...ics Today, showing how HGT compliments the modular nature of genetic information, making it feasible to swap whole sets of genetic code ?like the genes that allow bacteria to defeat antibiotics. "Life clearly evolved to store genetic information in a modular form, and to accept useful modules of genetic ...

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