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Intermediate in Biological News

Researchers first to 'see' reactive oxygen species in vital enzyme

... this process. But no one has ever seen an oxygen intermediate attached to the flavin. Until now." As ... further and then becomes trapped in its reactive intermediate state. Using the combined data, the group identified two possible intermediate structures. Further experiments will help ...

Researchers study acoustic communication in deep-sea fish

... of the mating season, they found that the tiny intermediate muscle of the fawn cusk-eel was larger in ... during the summer mating season and found that intermediate muscle weight increased four fold and had become ... in females. "Our findings suggest that the intermediate muscle likely assumes a prominent role in sound ...

Closing the gap between fish and land animals

... other and did not give a complete picture of the intermediate steps in the transition. In 2006 the ... with the discovery of an almost perfectly intermediate fish-tetrapod, Tiktaalik, but even so a gap ... and the pattern of teeth in its jaws, are neatly intermediate between those of Tiktaalik and Acanthostega. ...

Purdue researchers obtain a snapshot clarifying how materials enter cells

... work with Chen, said capturing an image of the intermediate stage is a giant step toward learning the ... associate professor of chemistry at Purdue. "The intermediate stage provides all of this information about how ... was the key to success in capturing the intermediate structure, Chen said. Davidson identified a ...

Scientists find universal rules for food-web stability

... is enhanced when many diverse predator-prey links connect high and intermediate trophic levels. The computations also reveal that small ecosystems follow ... at high trophic levels feed on multiple prey species and species at intermediate trophic levels are fed upon by multiple predator species," says Ulf ...

Scripps scientists create first crystal structure of an intermediate particle in virus assembly

... spent five "painful" years trying to produce a crystal structure of the intermediate particle they knew was assembled first. They had produced images using ... in Johnson's lab, kept trying to capture the crystal structure of the intermediate form of the virus, but it always quickly morphed into its final armored ...

MIT: A quicker, easier way to make coal cleaner

... dioxide, an important greenhouse gas. But an MIT analysis suggests an intermediate step that could get construction moving again, allowing the nation to fend ... new coal plants or the CCS technology." Partial capture could be a viable intermediate step. The push for full capture (defined as 90 percent of the total) is ...

AGU journal highlights -- Oct. 16, 2008

... of the floats was tightly controlled by topography such that flow of intermediate waters within and the exchange between the basins took place along depth contours. By contrast, just upstream of the outflow of intermediate water from the Nordic seas to the North Atlantic, the flow is forced to ...

Details of evolutionary transition from fish to land animals revealed

... , the 375-million-year-old fossil animal that represents an important intermediate step in the evolutionary transition from fish to animals that walked on ... skull as a rapid event, largely because we lacked information about the intermediate animals," said Neil Shubin of the University of Chicago, who co-led the ...

New fossil tells twisted tale of how flatfishes ended up with two eyes on one side of head

... this curious structural adaptation because no fishesliving or fossilwith intermediate characteristics of this adaptation have ever been identified. What ... In other words, the fossils show incomplete asymmetry, displaying an intermediate condition between what is found in ordinary symmetrical fishes and ...

Research suggests parts of UK could be too hot for wine making by 2080

... vineyards to produce wines like Reisling. In the last 20 years some intermediate French grape varieties have been successfully planted in southeast ... throughout history, Professor Selley predicts that these cool and intermediate grape varieties will be confined to the far north of England, Scotland and ...

Research suggests parts of UK could be too hot for wine-making by 2080

... vineyards to produce wines like Reisling. In the last 20 years some intermediate French grape varieties have been successfully planted in southeast ... throughout history, Professor Selley predicts that these cool and intermediate grape varieties will be confined to the far north of England, Scotland and ...

Natural compound in broccoli could treat devastating genetic skin disorder

... 5 (K5) and keratin 14 (K14). These proteins co-polymerize to form the intermediate filament cytoskeleton in basal keratinocytes. Since the discovery in 1991 ... a broad range of tissues have been traced to defects in genes that encode intermediate filament proteins. Coulombe and colleagues turned to sulforaphane in ...

Reprogramming the debate: stem-cell finding alters ethical controversy

... to make customized, pluripotent cell lines without having to create an intermediate embryo that is a "clone" of an adult person, she says. Charo says the ... lines that are equally usable without having to go through an embryo in intermediate steps is going to undermine any effort on the part of Congress to overturn ...

Living fossils have hot sex

... of cycads primeval plants known as living fossils may represent an intermediate step in the evolution of plant pollination, the researchers report in the ... them. The push-pull pollination seen in certain cycads may be an intermediate evolutionary stage on the path from plants using odors to repel ...

High-tech vehicle design boosts emergency rescue capacity

... how," explains Strobel. "EUREKA helped us find funding and was an excellent partner." Moreover, the co-operation was particularly smooth. "Specific intermediate results were well communicated, so that everybody always knew about each others' advances." The two small and medium-sized enterprises (SMEs) would ...

Evolution: Crabs go deep to avoid hot water

... is thought to show that king crabs evolved from shell-bound hermit crabs - similar to the familiar shoreline animals. Soft-bodied, but shell-free intermediate forms are found only in the shallow waters off Japan, Alaska, and Western Canada. By looking at 200 years' worth of records from scientific ...

Reading the brain without poking it

... activity and allow surgeons to locate and remove a small portion of the brain causing the seizures. ECoG and microECoG represent an intermediate step between electrodes the poke into the brain and EEG (electroencephalography), in which electrodes are placed on the scalp. Because of distortion ...

American Society for Microbiology honors George Liu

... streptococcus (GBS) hemolysin. He showed that this toxin has an unusual dose effect that causes lysis of phagocytes at a higher dose, apoptosis at an intermediate dose, and downregulation of inflammation at a low dose. The golden color imparted by carotenoid pigments of Staphylococcus aureus became the next ...

'Beating' heart machine expedites research and development of new surgical tools, techniques

... tools. "There will still be a need for testing in live animal models," says Dr. Greg Buckner, who directed the project, "but this system creates an intermediate stage of testing that did not exist before. It allows researchers to do 'proof of concept' evaluations, and refine the designs, before operating on ...

Biomass as a source of raw materials

... reaction, meaning a one-step reaction whose partial reactions (hydrogenation, hydrolysis, and dehydration) occur in the same reactor, with no intermediate work-up. The secret is in the catalyst, which works on all of these different reactions. The end result is a mixture of various alkanes that ...

Managing Douglas-fir forests for diversity

... "Managing stands with moderate hardwood densities enables a stratified structure to develop with conifers and hardwoods occupying dominant and intermediate canopy layers, respectively," explains Harrington. "Combining high hardwood densities with precommercial thinning of Douglas-fir creates a codominant ...

The first DFG research centers to be funded for another four years

... Centre in Berlin and the "Molecular Physiology of the Brain" Research Centre in Gttingen were established in 2002 and, following their first positive intermediate evaluation in 2006, will again be reviewed in the coming year. The youngest institution is the "Regenerative Therapies" Research Centre in Dresden, ...

Findings uncover new details about mysterious virus

... evolution of cells, bacteria and viruses," said Siyang Sun, a postdoctoral research associate working in Rossmann's lab. "The mimivirus is like an intermediate between a cell and a virus. We usually think of cells as being alive and a virus is thought of as being dead because it needs a host cell to complete ...

Optimum running speed is stride toward understanding human body form

... metabolic rates at a range of speeds enforced by a motorized treadmill. Metabolic energy costs increased at both fast and slow speeds and revealed an intermediate pace of maximal efficiency. The most efficient running speed determined in the study varied between individuals but averaged about 8.3 miles per ...

Exposure to insecticide may play role in obesity epidemic among some women

... Occupational and Environmental Medicine , analyzed DDE levels of the women's offspring. Compared to the group with the lowest levels, those with intermediate levels gained an average of 13 pounds excess weight, and those with higher levels gained more than 20 pounds of excess weight. "Prenatal exposure ...

Research yields potential target for cancer, wound healing and fibrosis

... proteins the cells become activated by their integrins and trigger signaling for the cell to expand or spread over the matrix. Cell spreading is an intermediate step during cell migration on matrix proteins. Prior to the current study it was not clear whether the beta-1 integrin tail recruits the same or ...

Simple test helps predict heart attack risk

... intensive medical therapy and preventing heart attacks and strokes," said Murphy. While 91 percent of the NHANES group was considered at low or intermediate risk of cardiovascular disease, according to Framingham criteria alone, almost 45 percent of them were found to have at least one of three ...

Calculating gene and protein connections in a Parkinson's disease model

... co-author on the article. "The output of ResponseNet is a sparse network connecting some of the genetic data to some of the transcriptional data via intermediate proteins. Biologists can look at the network and understand which pathways are perturbed, and they can use it to generate testable hypotheses." To ...

Forget the freezer: Research suggests novel way to control water behavior

... their findings are very striking. In particular, the observation that a tri-layered system, with two frozen layers sandwiching a fluid intermediate layer, can exist as an equilibrium state because of confinement is very exciting." Debenedetti noted there are numerous applications for an ...

Study says 'middle class' coral reef fish feel the economic squeeze

... of JCU, Joseph Maina of WCS, and Shaun Wilson and Terry Hughes of JCU. In a comparison between villages, researchers found that communities with intermediate levels of infrastructure had the lowest fish levels in their adjacent reef systemsup to four times lower than sites of low and high levels of ...

Early whales gave birth on land

... said. "They were living at the land-sea interface and going back and forth." Compared with previous fossil whale finds, Maiacetus occupies an intermediate position on the evolutionary path that whales traversed as they made the transition from full-time land dwellers to dedicated denizens of the deep. ...

Early whales gave birth on land, fossil find reveals

... said. "They were living at the land-sea interface and going back and forth." Compared with previous fossil whale finds, Maiacetus occupies an intermediate position on the evolutionary path that whales traversed as they made the transition from full-time land dwellers to dedicated denizens of the deep. ...

Common soil mineral degrades the nearly indestructible prion

... in the soil, Pedersen explains, are likely critical links in the chain of infection because the agent does not appear to depend on vectors intermediate organisms like mosquitoes or ticks to spread from animal to animal. That the birnessite family of minerals possessed the capacity to degrade prions ...

Sequence matters in droughts and floods

... (bursera simaruba, also known as West Indian birch) tends to be drought tolerant. The red maple (acer rabrum, also known as swamp maple) has intermediate tolerances to drought and flood. Each species tested showed higher mortality and lower growth rate when flood was first in the sequence, compared ...

Lamin A/C deficiency is 'unnerving'

... Mutations in the nuclear intermediate filament lamin A/C (LMNA) gene are associated with Emery-Dreifuss muscular dystrophy, but cause the disease by unknown mechanisms. Mjat et al. show ...

Researchers advance knowledge of little 'nano-machines' in our body

... each of the four subunits, information that was lost in previous measurements. They found that the four molecules act together, which explains why no intermediate steps are found in the electrical current measured in electrophysiological experiments. ...

December 2008 highlights from Biology of Reproduction

... on a 129 genetic background. Park et al. studied individuals comprised of mixed, 129 and C57BL/6J backgrounds and defined a quantitative range of intermediate phenotypes and gene expression patterns (such as the augmentation of Stra8 expression by C57BL/6J background noted by others). Appreciating the ...

Acrylic glass made of sugar

... to turn a linear C4 carbon structure into a branched one. Compounds of this type are precursors of MMA. Parent compounds may of course include intermediate products from the petrochemical industry. The revolutionary aspect, however, is that this enzyme, integrated into metabolically appropriate ...

European researchers harness unique properties of boron to develop new drugs and diagnostics

... knowledge over the potential, development of boron compounds for medicine has been held back until now by the high cost of catalysts and born based intermediate compounds used in the synthesis. Another important recent development therefore was availability of lower cost intermediates in the synthesis ...
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