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Tag: "core" at biology news

MIT: Oceans are a major gene swap-meet for plankton

...obes and contain the information that drives their core metabolism, and others that are more mobile, which can be found in unique combinations in different microbes. "So it is these unique combinations of genes that create the diversity we see, and which allow microbes to flourish in all environments on ...

The closest look ever at the cell's machines

...rent. Cells use a mixed strategy of prefabricating core elements of machines and then synthesizing additional, snap-on molecules that give each machine a precise function. That provides an economic way to diversify biological processes and also to control them." Thus if the cell needs to respond quickly...

The world's deepest dinosaur finding - 2256 metres below the seabed

...s in fact just a crushed knucklebone in a drilling core ?a long cylinder of rock drilled out from an exploration well at the Snorre offshore field. Norway's first dinosaur fossil is a Plateosaurus, a species that could be up to nine metres long and weigh up to four tons. It lived in Europe and on Greenla...

Born with a love of speech

...utero exposure from innate predisposition. At the core of the studies is a unique set of complex speech a...ch. They also contain a fundamental frequency ?the core pitch of a voice, such as baritone or soprano, that helps us clue in to the identity of a voice. The...

Georgia Tech accelerates drug discovery with new IBM supercomputing cluster

... nodes for IBM BladeCenter systems (total of 4,000 core processors) running Red Hat Linux 4 on the infrastructure nodes and Scientific Linux on the compute nodes. The supercomputer forms the basis of the IBM Cluster 1350, a pre-packaged and tested super-cluster that is ultra-dense and easy to manage. "A...

Do plants have the potential to vaccinate against HIV?

...Dr Julian Ma's laboratory are working with the p24 core protein of the Human Immunodeficiency Virus (HIV). This protein plays a central role in eliciting the immune response to HIV infection, and is therefore likely to be an integral part of any multicomponent vaccine for HIV. Plants have already been u...

Novel virus entry mechanism could lead to new drugs against poxviruses

...fusion with a cell membrane which allows the virus core to be released into the cell. In contrast, the e...single fusion event will not release a naked virus core into the cell. The researchers found that interactions between polyanionic or negatively charged mol...

Legume compounds may help cancer treatment

...ion, and to be internationally competitive. "ARC core funding and major support through Queensland Government Smart State research funding has been vital in building capacity. It has enabled this marvellous research outcome," Professor Gresshoff said. ...

Stem cell transplants improve recovery in animal models for stroke, cerebral palsy

...ic core," Dr. Borlongan said. "But outside of that core there is a lining, what we call the penumbra, and that penumbra, if you do not treat it over time, becomes part of the core. We are showing, that even one week after a stroke, we are able to increase the number of cells surviving along that penumbra ...

New 'self-exploding' microcapsules could take sting out of drug delivery

...he new microparticles features a biodegradable gel core that is surrounded by a lipid membrane. As the gel biodegrades, pressure builds up in the membrane. Eventually the microcapsule ruptures, releasing the medication. The system, the researchers note, could change how some vaccines are administered. In...

Thinner and younger

... study with lower fasting insulin levels and lower core body temperatures. They also had less oxidative damage to their DNA, thought to be a marker of aging at the biochemical and cellular level. "This study has laid the groundwork for future research into the long-term effects of calorie restriction in ...

Rice scientists make first nanoscale pH meter

... invented by Halas. Each nanoshell contains a tiny core of non-conducting silica that's covered by a thin shell of metal, usually gold. Many times smaller than living cells, nanoshells can be produced with great precision and the metal shells can be tuned to absorb or scatter specific wavelengths of light...

Computational model simulates AZT metabolism in mitochondria

... AZT can enter the mitochondrial matrix, the inner core of the mitochondrion, and disrupt the replication of mitochondrial DNA by prematurely terminating DNA synthesis. Samuels added: "We're just starting our work. It is too early to say what the mechanism of mitochondrial toxicity of AZT is. The inhibi...

Rehydrate -- your RNA needs it

...bozyme travels through some sort of network to the core of the molecule, where chemical reactions take pla...that water molecules trapped inside the ribozyme's core are essential components of that network. The network acts like a jostling crowd at a cocktail par...

Rice scientists unveil 'nanoegg'

...oshells, nanoeggs have a spherical, non-conducting core that's covered with a thin metal shell. But where ...n some places and thin in others. The off-center core in the nanoegg radically changes its electrical properties, said co-author and theoretical physicist...

Autistic brain has fewer neurons for processing emotion

...ies likely contribute significantly to the primary core deficit in social function that defines this disorder," says Emanuel DiCicco-Bloom, MD, professor of pediatric neurology at the University of Medicine and Dentistry of New Jersey. Authors Cynthia Schumann, PhD, of the University of California, San ...

Scientists discover a genetic code for organizing DNA within the nucleus

... inaccessible. Since the proteins that form the core of the nucleosome are among the most evolutionarily conserved in nature, the scientists believe the genetic code they identified should also be conserved in many organisms, including humans. Several diseases, such as cancer, are typically accompanied...

Heart has enough oxygen to survive hypothermia, CPR crucial

...g and later examined the rats' heart cells. When core body temperature was lowered to 15°C, both hypothermic groups experienced a similar reduction in circulating blood volume. And both showed that the physiological mechanisms that help transport oxygen and help unload oxygen from hemoglobin were workin...

When the going gets tough, slime molds start synthesizing

...etides in the journal Nature, we realized that the core chemical structure of DIF-1, an important developmental signal in Dictyostelium, is similar to natural products made by plant type III PKSs," recalls Austin. At the time, Dictyostelium was in the midst of having its genome sequenced, and the bits a...

Molecular DNA switch found to be the same for all life

...sity of California at Berkeley have shown that the core machinery for initiating DNA replication is the sa...e-dependent conformational changes in theDnaA-like core of the origin recognition complex. This study was led by Botchan and Nogales, and included Megan Cla...

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