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Tag: "facilitate" at biology news

Carnegie Mellon scientists find key HIV protein makes cell membranes bend more easily

...ted is that FP-23 attaches to its T cell victim to facilitate a change in the shape of gp41, which in turn drives uptake of HIV RNA and proteins by the T cell. But the Carnegie Mellon work suggests that FP-23 plays another, equally important function — reducing the free energy of curved fusion intermediates. Th...

Endosome-mediated signaling in plants

...s has shown that receptor endocytosis can actually facilitate signaling through the cell, by bringing signaling components in contact with their activated receptors. Drs. Geldner, Chory and collaborators now extend the range of endosome-mediated signaling into the plant kingdom. The researchers show that the...

Turn-ons and turn-offs for neurons

...duce high levels of gene-specific activators which facilitate “un-silencing” of previously silenced genes. These findings have important implications in experimental research that makes use of reversible gene expression tools to switch genes on and off. Neuroscientists need such gene switches to investigate the...

'Virtual autopsy' helps identify drowning as cause of death

..."Our findings show that MDCT can be used either to facilitate or reduce the need for conventional autopsy when drowning is the suspected cause of death," said lead author Angela D. Levy, M.D., from the Department of Radiology, Uniformed Services University of the Health Sciences in Bethesda, Md. The determi...

Ecology in an era of globalization

...anges, including an ecological knowledge system to facilitate access to new and existing sources of ecological information throughout the world. Frederick Meyerson (University of Rhode Island, US), Leticia Merino (Universidad Nacional Autónoma de Mexico, Mexico City, Mexico), and Jorge Durand (Universidad de...

Better health twice as likely for nonsmokers who live and work with smoking restrictions

... smokers. Since smoke-free public places appear to facilitate the adoption of smoke-free homes, and as smoke-free air legislation spreads, a rise in protection from secondhand smoke at home can be expected. "However, this does not, preclude the need to take a proactive approach to increasing adoption of househ...

Genes set scene for metastasis

...Investigator, and colleagues showed how four genes facilitate the formation of new tumor blood vessels, the release of cancer cells into the bloodstream, and the penetration of tumor cells from the bloodstream into the lung. The gene set comprises EREG (an epidermal growth factor receptor ligand), the cyclooxyg...

Scientists use nanoparticle to discover disease-causing proteins

...ease processes. They also hope the new method will facilitate better, more efficient diagnosis in living cells and patients. Most diagnostic methods must be done on minute dead blood or tissue cell samples in a laboratory dish, said Andy Tao, a Purdue biochemist and senior author of the study. Because molecu...

Ancient amphibians evolved a bite before migrating to dry land

... realm to land involved a series of adaptations to facilitate changes in locomotion, respiration, reproduction, sensation, and feeding," Markey says. "In water, suction is an efficient method of feeding, but it does not work in the much less dense air environment. Early terrestrial inhabitants would thus have h...

Antivirals effectively curb influenza virus

...zed randomization and study criteria would greatly facilitate trial comparison in the future. Such further studies will help us ensure we are better prepared not only for annual influenza seasons but also for the ultimate pandemic," said co-author Ira M. Longini, Jr., Ph.D., also a member of the Hutchinson Cent...

DNA layer reduces risk of reserve parts being rejected

...ith biologically active factors that, for example, facilitate the formation of bone tissue and blood vessels. Al...coating could be safe, reduce the immune response, facilitate bone attachment and be functionalisable. Layer by layer However, enzymes in the body will q...

The influence of the menstrual cycle on the female brain

...e, for example, two qualities that are supposed to facilitate procreation and are seen during the period of ovulation. It could be envisaged that the increase in activity of certain regions of the female brain during the follicular phase would modulate behavior linked to obtaining rewards, such as approach beha...

Major link in brain-obesity puzzle found

...cleus, it can bind to many different molecules and facilitate signaling. Specifically, it can bind to a variety of molecules called tyrosine kinases, including ones that serve as receptors for insulin and growth factors that circulate in the brain and body. One of its most important binding partners is JAK2,...

Linking DNA and histone methylation

... and colleagues detail that mammalian HP1 proteins facilitate this cooperation. They found that HP1 proteins, which bind to methylated histones, also interact with the DNA methyltransferase, DNMT1, to stimulate its DNA methylation activity. DNMT1, in turn, reinforced HP1 binding to methylated histones. Fina...

Stress hormones may play new role in speeding up cancer growth

... they are operating but they may work with VEGF to facilitate blood vessel growth in new tumors so that they can grow." The target adrenergic receptors for these hormones are well-known to clinicians dealing with high-blood-pressure patients. Typically, such patients are given a class of drugs known as beta-...

Key to zebrafish heart regeneration uncovered

...entists further discovered that key growth factors facilitate the interaction between the cell mass and the protective covering, encouraging the formation of new heart muscle. Many cell biologists believe the ability to regenerate damaged heart tissue may be present in all vertebrate species, but that for un...

Discovery of the first resistance gene to rice yellow mottle virus

...o the genetic bases of this resistance in order to facilitate its transfer to varieties that are agronomically useful yet susceptible to the virus with a view to optimizing their use. Standard genetic studies first found evidence that resistance was controlled by a single recessive gene. Subsequent genetic ma...

Pheromone from mother's milk may rapidly promote learning in newborn mammals

...w odors with milk availability. This would in turn facilitate an essential skill: the ability of newborn pups to rapidly hone their suckling instincts during the first days of life. ...

Researchers in Montréal and the US create model of key immune-system component

... we have generated a model of that we believe will facilitate our understanding of infectious diseases and expedite the development of new strategies to fight pathogens." "It is exciting to see that systems biology has the power to unravel how the phagosome works by revealing the intricately woven roles of a...

Pattern of human Ebola outbreaks linked to wildlife and climate

...ich indicates that severe environmental stress may facilitate disease transmission. In the study, the researchers urge that public education is needed to decrease human contact with potentially infected wildlife by discouraging people from scavenging dead animals and by promoting safe hunting and trapping ...

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