Tag: "twist" at biology news

Protein transformation gives new twist to medical research

... It's like one of those transformer toys that you twist and they become something quite different from the original in shape and form, noted Sacchettini, whose group worked out the detailed molecular structure of Lyz before and after its shape-shifting. It's fascinating to know now that the same pro...

Physics team puts new twist on spin hall effect

..., the intrinsic spin Hall effect, which puts a new twist on future technology and the possibility for novel circuits with low energy consumption. The team is formed by physicists Dr. Jrg Wunderlich and Dr. Bernd Kaestner from the Hitachi Cambridge Laboratory, U.K.; Prof. Toms Jungwirth from the Institute ...

What are little boys made of?

...ty of Virginia Health System have discovered a new twist on the role that estrogens play in the development of behavioral differences between males and females. In laboratory tests on mice, the researchers found evidence that an estrogen receptor in the hypothalamus called ER regulates defemin...

Wolves alleviate impact of climate change on food supply, finds new UC Berkeley study

...now that a meal is coming." The study adds a new twist to the wolves' ability to provide food for other animals. It highlights both the effects of global warming on Yellowstone's ecosystem and the importance of the wolf in helping animals cope with the climate change. "Few studies have really looked at...

Why embryos need a good diet

...c period by environmental influences, which puts a twist on the traditional 'genes vs. environment' debate. Nutrition influences can mediate epigenetic change for example the supply of folate can affect DNA methylation. Mother's diets also come under Hanson's and Gluckman's scrutiny. People's protein ...

Cure for common cold will need to wiggle to work, scientists say

... Post said. "If it gets stuck for a moment, it can twist its way through by means of atom-sized hinges and swivels along its length. It turns out that even in the molecular world, it helps to be flexible." The team discovered the effect through a computer simulation of the molecules' behavior, which they a...

Geckos: It's not always about sex

...babies are genetically identical to her. A further twist to the story is that many parthenogentic species, including the Bynoe's gecko, evolved when two species crossed, or hybridized, said Michael Kearney. He is a postdoctoral research fellow in the Centre for Environmental Stress and Adaptation Research ...

Bumblebees copy one another when contending with unfamiliar flowers

...have reported findings that offer a surprising new twist to our understanding of how bumblebees, a vital floral pollinator, select the flowers from which they collect nectar. When faced with unfamiliar plants, foraging bees do not choose flowers entirely alone but instead copy the choices of other bees. Th...

The body's biological clock: alcohol may lead to physiological anarchy

...e function possesses a circadian component. A new twist on this story, however, is that the immune system is not just a passive partner responding to circadian signals, but possesses an intrinsic clock of its own that is synchronized to an individual's central clock via hormonal and autonomic signals." ...

Engineered molecule amplifies body's immune response

...d thus more efficient. This old protein with a new twist may eventually be used to improve the body's defense against infection. Stat1 is involved in immune responses that are initiated by proteins called interferons. These proteins are produced by the cells of the immune system in response to challenges...

Yale scientists participate in $12.3M NIH National Technology Center

...Tweezer (HOT) systems to trap, pull, position, and twist up to about one hundred microparticles simultaneously," said Dufresne. "We will stimulate individual cells with precisely coordinated biochemical and mechanical signals to quantify their dynamic response. Using multiple probes together, we will be ab...

Recreating 'Flowers for Algernon' with a happy ending

In a surprise twist that recalls the film classic "Flowers for Algernon," but adds a happy ending, UCLA scientists used statins, a popular class of cholesterol drugs, to reverse the attention deficits linked to the leading genetic cause of learning disabilities. The No...

Unexpected function for a key regulator of blood glucose levels

An unexpected twist to a discovery reported just two months ago may significantly improve our understanding about the molecular origins of diabetes. Scientists at the Salk Institute for Biological Studies then reported their discovery of a key cellular switch that instr...

JCI table of contents: November 23 2005

...chusetts Medical School now show how, in a strange twist of immunological karma, T cells specific to a previously encountered virus (such as the flu) may come back to haunt you, by overzealously responding to a subsequent, unrelated viral infection like EBV, thereby increasing the severity of the immune re...

Proteins' subtle 'backrub' motion could have important implications

...and deduced that the local backbone structure must twist slightly in a particular way to accommodate the larger side-chain movement. According to Richardson, this motion, which they dubbed a "backrub", is a subtle, concerted shift of the two backbone units on either side of the dancing side chain. "Nobody ...

A cancer promoting protein shows up in an unexpected place in the cell

... who led the study. "But here is a completely new twist on the story." The researchers "add a striking new dimension to our understanding of how Ras protein function can be regulated," writes Larry A. Feig, Ph.D., Professor of Biochemistry at Tufts University School of Medicine, Boston, in an editori...

Marine mammals are on the frontline of failing ocean health

...read of disease and pollutants, adding yet another twist to the story. Jim Berner, an MD with Alaska Native Tribal Health Consortium, works in northern ocean ecosystems, where climate change is having a marked effect. "Alaska is a laboratory for human health issues, particularly those that have to do with...

Salmonella bacteria use RNA to assess and adjust magnesium levels

...The riboswitch is a sensor within the RNA that can twist it into different configurations that block or fac... a similar sequence precedes the MgtA gene and can twist RNA copied from it into different configurations. "Normally you would expect to find that a DNA seq...

Solitons could power molecular electronics, artificial muscles

...lecules. Because polymer chains tend to bend and twist as solitons pass through them, scientists have wondered whether solitons could be used to power artificial muscles for high-tech robots and devices to aid human mobility. Such muscles would be made of organic polymers, and flex in response to light o...

How parachute spiders invade new territory

... into the breeze have shown how it can contort and twist with turbulence, affecting its aerodynamic properties and carrying its rider unpredictable distances. Spiders are key predators of insects and can alleviate the need for farmers to spray large quantities of pesticide. But they can only perform this f...

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(Date:10/30/2014)... therapeutics present unique challenges when it comes to ... harm. New consensus guidelines for toxicity testing that ... characteristics of these novel biopharmaceuticals are presented in ... from Mary Ann Liebert, Inc. publishers . ... Nucleic Acid Therapeutics website until November 30, ...
(Date:10/29/2014)... oil and gas production are well over recommended levels ... access journal Environmental Health . High levels of ... is the first to be based on community sampling ... be used to supplement official air-quality monitoring programs. , ... not readily flow to the surface. This is because ...
(Date:10/29/2014)... genetic and environmental, have been blamed for increasing ... such as a family history of schizophrenia, are ... Toxoplasma gondii , a parasite transmitted by soil, ... with skepticism. , A new study by Gary ... the University of Pennsylvania,s School of Veterinary Medicine, ...
Breaking Biology News(10 mins):New guidelines for reproductive & developmental toxicity testing of oligonucleotide drugs 2Air quality and unconventional oil and gas sites 2Air quality and unconventional oil and gas sites 3Penn vet professor investigates parasite-schizophrenia connection 2Penn vet professor investigates parasite-schizophrenia connection 3
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