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Tag: "acting" at biology news

Growth in the sea comes down to a struggle for iron

...grow. They begin to starve in the midst of plenty, acting as though iron, an essential nutrient, still is in short supply. Why this happens is unclear, but the answer could be that iron sets off a kind of chemical warfare in the marine ecosystem, according to University of Maine oceanographer Mark Wells. An...

New binding target for oncogenic viral protein

... "These proteins are also some of the most broadly acting cellular oncogenes, and include cyclin E, c-Myc, N...he cell. Drs. Clurman and Welcker suspect that by acting as a decoy and binding to Fbw7, T antigen protects cellular Fbw7 targets that facilitate viral repli...

Research advances quest for HIV-1 vaccine

...Dr. Hermann Katinger in Vienna and is the broadest acting neutralizing antibody against HIV-1 that is currently known. This antibody recognizes a protein called gp41 that is found on the surface of the virus. The gp41 protein is thought to play a key role in mediating entry of HIV-1 into human cells. A res...

Zebrafish may hold key to understanding human nerve cell development

...something in the glia isregulating development and acting as an inhibitory cue. It's possiblethat this signal could also play a role in the development of stemcells throughout the nervous system. Much more research is needed toidentify this signal but we're optimistic our work has set the stagefor future di...

Harmful Bacterium Commonly Found in Poultry May Survive Refrigeration and Frozen Storage Combined

...something in the glia isregulating development and acting as an inhibitory cue. It's possiblethat this signal could also play a role in the development of stemcells throughout the nervous system. Much more research is needed toidentify this signal but we're optimistic our work has set the stagefor future di...

GenMAPP 2.0 released

...something in the glia isregulating development and acting as an inhibitory cue. It's possiblethat this signal could also play a role in the development of stemcells throughout the nervous system. Much more research is needed toidentify this signal but we're optimistic our work has set the stagefor future di...

Molecular Motors Cooperate In Moving Cellular Cargo, Study Shows

...speed and direction of a peroxisome, and the force acting upon it. "By measuring force we can determine how many molecular motors are working together," Selvin said. "This will help us further understand these marvelous little machines." ...

Biologists discover why 10% of Europeans are safe from HIV

... its protection from another deadly viral disease, acting over a sustained period in bygone historic times. Some scientists have suggested this disease could have been smallpox or even bubonic plague but bubonic plague is a bacterial disease rather than a virus and is not blocked by the CCR5-delta32 mutati...

First North American Encapsulated Islet Transplant without Long-term Immune Suppression into a Patient with Type 1 Diabetes

... its protection from another deadly viral disease, acting over a sustained period in bygone historic times. Some scientists have suggested this disease could have been smallpox or even bubonic plague but bubonic plague is a bacterial disease rather than a virus and is not blocked by the CCR5-delta32 mutati...

First technology to remove prions that cause vCJD from blood launched

... of the UK population could be incubating vCJD and acting as blood donors. The most direct action to reduce the risk of transmission may come from new methods to provide prion protection." Prion Protection The Leukotrap Affinity Prion Reduction Filter removes all types of prions in addition to leukocytes (...

Decoding the logic of olfaction

... discrepancy is that the cortical neurons might be acting as 'coincidence detectors,'" said Buck. "They might respond only when they get input from more than one type of odorant receptor. And this is fascinating because each odorant is recognized by a combination of odorant receptors." Buck explained that ...

Genpathway and Baylor College of Medicine Identify New Genes in Breast Cancer

... discrepancy is that the cortical neurons might be acting as 'coincidence detectors,'" said Buck. "They might respond only when they get input from more than one type of odorant receptor. And this is fascinating because each odorant is recognized by a combination of odorant receptors." Buck explained that ...

Changing ecosystems throw scientists mega-challenges

...re occurring—especially when multiple stresses are acting on environmental systems simultaneously—and how best to respond to them. "Now more than ever," write the members of the NSF Advisory Committee for Environmental Research and Education, who authored the report, "scientists must address combinations o...

Doing a spin with DNA

... in the form of a double helix with the base pairs acting as the 'stairs' in a staircase. The sequence of these base pairs stores genetic information. During cell division genetic material is copied and the enzymes responsible for this must be able to transcribe the base sequences. This is only possible if ...

Microarrays as phenotype

...ssion and order of genes in a particular genome -- acting as a surrogate measure of cell physiology, said researchers at Baylor College of Medicine in a report that appears online today in the journal Nature Genetics. "Microarray data are good phenotypes to determine the order of genes and are a good surro...

Gov't Creates Gene Database of Normal Human Tissues

...ormal human tissues," added James Jacobson, Ph.D., acting branch chief of the Diagnostics Research Branch in NCI's Division of Cancer Treatment and Diagnosis. "These data give investigators a baseline against which to compare gene expression data obtained from tumor or other disease specimens, and should be...

A hope for oil spill bioremediation

...in oil composition. But the most important process acting on the spilled oil is biodegradation. It is well established that most crude oils are biodegradable to a great extent, especially components as short linear alkanes or simple aromatic hydrocarbons. However, the heavy fraction, made of long-chain satu...

Tamoxifen-like drug suggests new ways to selectively block estrogen

...gen. But it has the opposite effect in the uterus, acting like estrogen to stimulate tissue growth and incre...degradation. GW5638 fits somewhere in the middle, acting like a SERM in some tissues and more like a SERD in others, including mammary tissue, where it is a ...

Discovery of New Dopamine Action May Yield Alternative Psychiatric Drugs

...participates in slow synaptic transmission here by acting as a scaffold for signaling molecules in response to dopamine receptor activation," Caron said. "The observations also provide an alternative pathway by which dopamine receptor activation leads to the expression of dopamine-associated behaviors." T...

Recombinant DNA technology may enable oral, rather than injectable, delivery of protein drugs

...ction, notes Wei-Chiang Shen, Ph.D., professor and acting chair of the Department of Pharmaceutical Sciences. Shen, along with colleagues David Ann, Ph.D., professor of molecular pharmacology and toxicology, and Yun Bai, doctoral student in the Department of Pharmaceutical Sciences, wrote a paper on this re...

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