structural 2 4

Tag: "structural" at biology news

Brains can recover from alcoholic damage but patients should stop drinking as soon as possible

... is senior neuroradiology resident and head of the structural and functional MR-imaging laboratory of the Department of Neuroradiology at the University of Wuerzburg, said the study was one of the first to be able to integrate data that showed how the brain regained volume and function early on, once alcoholics...

Three-dimensional, miniature endoscope opens new diagnostic possibilities

... device called an interferometer, which calculates structural information based on the interaction between two waves of light, provides the data required to create three-dimensional images. To demonstrate the device's application in a live animal, the researchers used the system to image metastatic ovarian ...

A wolf in sheep's clothing: Plague bacteria reveal one of their virulence tricks

...nia. His results confirmed the hypothesis from the structural study: While the wild-type YpkA wreaked havoc on their host cells' cytoskeletons, the mutant left the actin-based skeleton intact. Then, the researchers took it one step further. Stebbins and Prehna worked with collaborators at Stony Brook Universit...

New technology used to construct the first map of structural variation in the human genome

...elped us to develop the first comprehensive map of structural variation in the human genome," says Dr. Nigel Carter, one of the lead investigators on the project. "We used it to help identify 1,447 CNVs, which covered 12% of the human genome." The other paper presents a new multi-step algorithm used with th...

Humpback whales have brain cells also found in humans

...types of mammals. The authors speculate that this structural feature may have evolved in order to promote fast and efficient communication between neurons. The other notable feature was the presence of spindle cells in the humpback cortex in areas comparable to hominids and in other areas of the whale brain as...

Chemotherapy temporarily affects the structures of the human brain

...searchers have linked chemotherapy with short-term structural changes in cognitive areas of the brain, according...tations caused by the study design. However, these structural changes to the central nervous system were not sustained for patients three years after chemotherapy...

Sunflower speciation highlights roles for transposable elements in evolution

...dated this mode of speciation by documenting novel structural rearrangements in their chromosomes, as well as large-scale increases in nuclear DNA content. The nuclear-genome size differences between the hybrids and their parental taxa occur in spite of the fact that all species possess the same number of chrom...

UNC scientists solve mystery of how largest cellular motor protein powers movement

...ring the process of cell division, thanks to a new structural model by University of North Carolina at Chapel Hill researchers. The structural model helps solve a scientific mystery: how the protein dynein fuels itself to perform cellular func...

Detecting explosives with honeybees

...or insect repellant. In addition, the team studied structural units in the honey bee's antenna and looked for biochemical and molecular mechanisms that could advance their ability to be trained and retain their training for longer periods of time. ...

MIT finds most complex protein knot ever seen

...ich he believes could be helpful to researchers in structural genomics. (Structural genomics aims to determine the structure of all proteins produced by a given organism.) Since their initial screening, the researchers have discovered five-crossing knots in two other proteins - a brain protein whose overexpre...

USC team reveals structure of APOBEC family protein

...ogical sciences and chemistry in USC College. A structural biologist, Chen has produced the first x-ray crystal structures of a number of proteins important in viruses, cancer and immunity. In one sense, the APOBEC proteins are classic saboteurs -- they all can introduce mutations into strands of DNA or R...

Molecular anatomy of influenza virus detailed

...tter." One of the difficulties that has hampered structural studies of influenza virus is that no two virus particles are the same. In this fundamental respect, it differs from other viruses; poliovirus, for example, has a coat that is identical in each virus particle, allowing it to be studied by crystallogr...

Researchers discover how bacteria sense their environments

...ic molecule has been sensed outside the cell. This structural shift then activates kinases, or enzymes, within the cell, starting a chain reaction that leads to a response, such as changing how the flagella (or tails) spin. This allows the bacterium to move toward or away from what it has sensed. Such a mecha...

New study reveals structure of E. coli multidrug transporter protein

...ransport through the cell membrane and provide the structural basis for how these proteins go about selecting sp...ucture adds another important view of some general structural features across multi-drug resistant transporter families." Other authors of the study include Yong...

Copying nature could save us energy, study shows

...dehumidifier technology), insect sense organs (for structural health monitoring) and the egg-laying organ of a wood-wasp (for a new type of steerable endoscope). "Evolution has sculpted animals, insects and plants to produce incredibly efficient machines that carry out a range of impressive engineering feats,"...

Trials for new drug to overcome HIV

..., the capsid protein is clipped apart from a major structural protein called the gag protein, and is then assembled into a cone. PA-457 stops it being clipped off, causing it to form a leaky sphere that leaves the core RNA exposed (see Diagram, left). This cripples the virus, preventing it from infecting any ot...

Links between DNA damage and breast cancer studied

...vely," they observe, "the findings reveal that the structural changes in DNA described may potentially disrupt normal reciprocal interactions between the cell types, thus increasing breast cancer risk." The findings suggest that lesions measured in the DNA of the stroma, which is readily obtained, may prove to ...

Methane-belching bugs inspire a new theory of the origin of life on Earth

...ycles that have been suggested, and the staggering structural complexity of the only known enzyme complexes that drive those reactions. Debate between the two camps has raged for two decades. By studying a microbe that Ferry discovered thriving in the oxygen-free, carbon-monoxide-rich sediment beneath kelp bed...

Speeding the search for elusive chromosomal errors

...n called "genomic diseases." The smallest of these structural defects are microdeletions, a loss of a small amount of genetic material, or microduplications, an excess of genetic material. Individually, many genomic diseases are rare, but collectively, they may occur in one in 1,000 live births. Frequently th...

Mapping the protein world

...le DNA, and to improve the automated generation of structural models. ARP/wARP has made the life of structural biologists worldwide a lot easier and will do even more so once the new features planned under the N...

1 2 3 4 5 6 7 8 9 10