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Tag: "many" at biology news

Study of protein folds offers insight into metabolic evolution

...ly tree of protein architecture also revealed that many metabolic protein folds are quite ancient: These a... in part on the observation that RNA still retains many of its catalytic capabilities, including the ability to make proteins. Gradually, according to this ...

Cornell lab confirms deadly fish virus spreading to new species

...t isn’t official," said Bowser. "There are just so many species affected and so many mortalities." Three new fish kills have occurred in 2007 in New York waters since the virus was id...

Danish researches solve virus puzzle

... the hosting organism. This is the manner in which many vira, e.g. HIV, trick the cell into producing something which it never would have done otherwise. Understanding the role of the pseudoknots can be an important step in developing a viral vaccine. ...

Detecting poisons in nectar is an odour-ous task for honeybees

Though many spring flowers have bright advertisements offering... genome has revealed that honeybees do not have as many genes for taste receptors as other animals of a similar size, such as flies and mosquitoes. This pr...

Discovery of 'master switch' for the communication process between chloroplast and nuclei of plants

...om activating gene expression. It has a role in so many signaling processes in the plant, it might actually be the ‘master switch?that researchers have been looking for." The discoveries are critical to future research efforts in designing new generations of plants, Mittler said. "A lot of things that...

Individuals and populations differ in gene activity levels, not just genes

...red into the genes." Scientists have known for many years about genetic variation, in which individual...viduals and populations. The researchers found many differences in gene-expression levels, and that about 17 percent of those differences were due to po...

Uniform language for describing genes of pathogenic and beneficial microbes

... pathogenic, neutral, or beneficial, but all share many common processes in their interactions with their ...e genes, scientists can compare among microbes the many processes that make up the interplay between a microbe and its host.? Dr. Tyler added: “PAMGO star...

Leukemia drug turns mini-molecules up, cancer genes down

...ctivity of the Bcl-2 gene, which is over-active in many kinds of cancer. The protein produced by this gene blocks the normal process of cell death and helps keep cancer cells alive long after they should have died. The remaining miRNA molecule, let-7, lowered the activity of the Ras oncogene, an impor...

Deconstructing brain wiring, one neuron at a time

... Institute for Biological Studies have jumped what many believe to be a major hurdle to preparing that chart: identifying all of the connections to a single neuron. In the March 1 issue of the journal Neuron, the researchers describe how they modified the deadly rabies virus, turning it into a tool that ...

NIDA study identifies genes that might help some people abstain from smoking

... other processes have also been identified. While many of the genes identified through this effort make sense because of their role in supporting new neural connections in the brain, more research is now needed to understand the actual mechanisms through which they may increase or reduce the rates of suc...

Improved predictions of warming-induced extinctions sought

...although current mathematical models indicate that many species could be at risk from global warming, surp... however, that they do not fully understand why so many species persisted during these ice ages, and caution that some genetic research suggests that specie...

MIT's ocean model captures diversity of underwater forests

...nge in the way scientists approach ocean models in many years. She believes it will serve to break down disciplinary barriers between the physical and biological ocean sciences. Follows attributes this new approach to three factors: the emergence of new information about the genetic diversity of marine...

Researchers wake up viruses inside tumors to image and then destroy cancers

... this strategy could offer a novel way of treating many cancers associated with Epstein-Barr, including at least four different types of lymphoma and nasopharyngeal and gastric cancers. In the March 1 issue of Clinical Cancer Research, a team of radiologists and oncologists from Johns Hopkins Medical Ins...

Discovery of new cave millipedes casts light on Arizona cave ecology

...ibly two new springtail species (Collembola). With many of the collected specimens still awaiting identification by taxonomists, the researchers believe additional species discoveries are likely. The new millipede genus will be named in honor of NAU ecologist, John Prather, who died last year. Wynne...

It's never too late to get it back! Aging interrupted

...cing calorie intake later in life can still induce many of the health and longevity benefits of life-long ... used to treat diabetic patients, seems to produce many of the beneficial effects of a low calorie diet. However, it is important to be sure that healthy p...

Leeches ferry infection among newts

...rea of swollen muscle. The swollen muscle contains many spores (also called spherules), each of which contains hundreds of infectious cells called endospores. Raffel and his colleagues think that the infection is transmitted when one of these spores bursts open and releases its endospores onto the mouthpa...

Genome sequencing reveals key to viable ethanol production

...oodle." C. thermocelllum produces low levels of many of its enzymes at any one time. When the bacterium comes in contact with wood, for instance, a few of its enzymes break down some of that wood. A product of that tiny reaction is a sugar called laminaribiose that diffuses into the cell. There it deac...

Whiteflies and plant viruses can help each other to speed up biological invasion

...reaks were seen in other States within the USA and many other countries around the world. The outbreaks of...These viruses are transmitted by this whitefly. In many countries and regions, including China, the outbreaks of the B whitefly have also seen the gradual d...

In young mice, gregariousness seems to reside in the genes

...itory and reproduction. That may well be true for many adult animals, but in a groundbreaking study resea...s, say Lahvis and Panksepp, do not account for the many forms of social interaction that occur prior to sexual maturity, nor do they account for the many ki...

Scientists see DNA get 'sunburned' for the first time

...t, but this new study shows that UV damage happens many times faster. On the timescale that the unwanted bonds form, even a rapidly moving DNA molecule would essentially appear frozen. That means that whether or not two thymine bases are damaged depends on the position of the DNA during the extremely b...

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