Tag: "degrade" at biology news

Magnetic fields may hold key to malaria treatment, UW researchers find

...ct because the parasite lacks the enzyme needed to degrade it. This causes a problem for the parasite because free heme molecules can cause a chain reaction of oxidation of unsaturated fatty acids, leading to membrane damage in the parasite. The malaria organism renders the free heme molecules non-toxic by...

Adding acetone to compost remediates chunk TNT contaminated soil

...n safely dissolve away the chunks and biologically degrade the TNT. Modifying a standard composting recipe, r...s. The addition of acetone allowed the microbes to degrade the TNT to less than 500 parts per million within one day. The concentration of TNT was down to safe...

Genetic method has promise for assessing environmental cleanup

...enase is present in several types of bacteria that degrade environmental pollutants. The toxins typically get into soil through leaking storage tanks. They are absorbed by the bacteria and broken down by enzymes into less toxic compounds, such as methyl catechol, which are further degraded into harmless chem...

Researchers develop tastier low-fat cheddar

...ng cooking, release certain enzymes that appear to degrade or destroy substances that your taste buds find less savory. For example, bitterness, a common off-flavor in reduced-fat cheese, was eliminated by using cultures with specific enzymes - ones that either don't release the bitter substances at all or b...

Purdue researchers clean up petroleum spills with plants

...es' action in the soil. They stimulate microbes to degrade contaminants by getting more oxygen into the soil ...ith tillage), or letting natural processes work to degrade the contaminants. During the next few years both EPA and Purdue will compare the cost and speed of e...

Cell Pathways scientists describe mechanism by which SAANDS compounds trigger programmed death in cancerous and precancerous cells

...PDEs is characterized by their ability to bind and degrade cyclic AMP (cAMP) and/or cGMP, but differs in their immunological, physical and kinetic properties. Only a limited number of PDE isoforms are expressed and used by any single type of cell or tissue to regulate cGMP or cAMP levels. Pharmaceutical de...

Experts to share biotech future world

...lly engineering microbes with genes to efficiently degrade chromate and other toxic contamination waste from a variety of industries. Raising Disease-free Crops. The genomes of plants and their microbial enemies will reveal specific plant/pathogen interactions at the cellular level, leading to possible eli...

Feds give $16 million to UNC-CH scientists studying waste site problems

...y remain inaccessible to microorganisms that could degrade them. Their goals are to learn how the chemicals act and change over time in the environment and to improve both assessment of potential health risks and cleanup methods. Dr. Cass T. Miller, chair of environmental sciences and engineering, is develop...

Researchers expand dating of marine animals to brachiopods

... acids are preserved. From the way the amino acids degrade through time, Carroll can figure out how old they are. The process is simple and works when calibrated with C-14 (radio-carbon) dating that has long been used to determine the ages of things from the past but is prohibitively expensive for dating lar...

USGS: Contaminants may play important role in California amphibian declines

...hose on the coast. Both diazinon and chlorpyrifos degrade very rapidly in organisms, and the detection of either compound indicates recent exposure to the chemicals. Of the pesticides tested in related lab studies, chlorpyrifos and diazinon, both commonly used organophosphates, suppressed nervous system act...

Scientists track phosphate to better understand global warming

...ean sediment trap samples to track which compounds degrade first, releasing their phosphorus back into the water and making it available to organisms. "Unlike nitrogen, little is known about the role of specific organisms in soil phosphorus cycling," says Cade-Menun. "I think it would be exciting to link th...

Too much of a good thing

... data established that CPY26 acts to metabolically degrade RA in vivo. The Cpy26 mutant mouse embryos were not viable; they exhibited major defects including spina bifida, truncation of the posterior body, kidney, brain and vertebrae abnormalities. The most severe developmental defect resulting from the lo...

Study pinpoints an enzyme key to both male and female sexual dysfunction -- along with a potential treatment

...agra and BEC function by blocking enzymes that can degrade key chemical players in this pathway," Christianson said. "The difference is that Viagra works several steps later than arginase-inhibiting compounds." Erectile dysfunction, which afflicts half of men older than 40 to some extent, occurs when this e...

Nature mops up

...-organisms in contaminated estuarine sediments can degrade or become a net sink for hydrocarbons and other organic pollutants, and thus may function as a filter within the ecosystem. In other words, the natural bacteria in the sediment - adapted by years of exposure to the problem - are doing a clean-up on t...

Clamshells, wheat and burgers - the next fast-food craze?

...oncerns that polystyrene clamshells did not easily degrade in landfills and contained CFCs (chlorofluorocarbons), which damage the Earth's delicate ozone layer. But there are trade-offs, according to chemist Geoffrey Nobes who reported on the study. Cardboard is "more expensive, heavier and more complicated ...

Chemistry of life in outer space is topic of two-day symposium, April 4-5

...ory in the Netherlands, has found that amino acids degrade readily when exposed to ultraviolet radiation. This places constraints on the number of amino acids that can survive in some regions of space. (The paper on this research, GEOC 146, will be presented at 2:15 p.m., Wednesday, April 4, in the U.S. Gran...

Trapping metalloproteinases in a serpins coils

...e matrix metalloproteinases, which are required to degrade collagen and other ECM components that are typically not the targets of serine proteinases. This biochemical activity is independent of TFPI-2s action as a serpin, since it can block MMP activity even when it is pre-incubated with serine proteinases...

Vitamin C produces gene-damaging compounds, test-tube study in Science reports

...sent to act as catalysts, the lipid hydroperoxides degrade further, into DNA-damaging agents called "genotoxi...ght also be capable of making lipid hydroperoxides degrade into genotoxins, in place of the transition metal ions. To investigate, the Science authors add...

Chemicals in frying pan a potential hazard to environment

...ature, researchers found that fluorinated polymers degrade when heated. They produce, among other chemicals, trifluoroacetic acid (TFA), a persistent compound whose long-term effects on the environment are unknown, trace amounts of ozone-destroying chlorofluorocarbons (CFCs) and longer-chain perfluorocarboxy...

Integrated pest management promises crop yields with fewer chemicals, but will it prove effective in the long run

...onment because they either require a smaller dose, degrade more quickly in the environment, or are less toxic than other products on the market. But the key concept in IPM programs is the word "integrated," since the overall IPM strategy calls for growers to rely first on techniques like frequent monitoring,...

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