Possible Mechanism For Creating Handedness In Biological Molecules: related news

Argonne scientists discover possible mechanism for creating "handedness" in biological molecules

The basic molecules that make up all living things have a predetermined chirality or "handedness”. This chirality has a profound influence on the chemistry and molecular interactions of living organisms. The inception of chirality from the elementary building blocks of matter is one of the great mysteries of the origin of life. Scientists at the U.S. Department of Energy's Argonne National Laboratory have discovered a way to induce this handedness in pre-biological molecules.

Argonne scientists discover possible mechanism for creating 'handedness' in biological molecules

ARGONNE, Ill. (December 1, 2008) — The basic molecules that make up all living things have a predetermined chirality or "handedness," similar to the way people are right- or left-handed. This chirality has a profound influence on the chemistry and molecular interactions of living organisms. The inception of chirality from the elementary building blocks of matter is one of the great mysteries of the origin of life. Scientists at the U.S. Department of Energy's Argonne National Laboratory have discovered a way to induce this handedness in pre-biological molecules.

Possible Mechanism For Creating 'Handedness' In Biological Molecules

The basic molecules that make up all living things have a predetermined chirality or "handedness," similar to the way people are right- or left-handed. This chirality has a profound influence on the chemistry and molecular interactions of living organisms. The inception of chirality from the elementary building blocks of matter is one of the great mysteries of the origin of life.

Scientists induce chirality in pre-biological molecules

(Nanowerk News) The basic molecules that make up all living things have a predetermined chirality or "handedness,” similar to the way people are right- or left-handed. This chirality has a profound influence on the chemistry and molecular interactions of living organisms. The creation of chirality from the elementary building blocks of matter is one of the great mysteries of the origin of life. Scientists at the U.S. Department of Energy's Argonne National Laboratory have discovered a way to induce this handedness in pre-biological molecules.

Nano "Tractor Beam" Traps DNA: Researchers use beams of light to grab and hold molecules

DNA molecules in a nanoscale channel get trapped by light. When DNA molecules suspended in a tiny stream of water flow through a nanoscale channel, they can be captured by a field of light if that light is confined in a device called a slot waveguide. The pressure from the light can then propel the DNA along the waveguide channel to bring the molecules to new locations. Such manipulation could prove valuable for assembling nanoscale structures, driving powerful sensors and developing a range of other technologies. Credit: Nicolle Rager Fuller, National Science Foundation

Brilliant light source for X-ray microscopy permits three-dimensional imaging of biological cells

The Fraunhofer Institute for Laser Technology ILT in Aachen has developed a powerful light source for compact X-ray microscopes that will allow biological cells to be studied in high resolution. Using a technique similar to that of medical tomography, it is now possible to obtain layered three-dimensional images of biological cells or even semiconductor devices.

Biological diversity in focus

QATAR University’s Department of Biological and Environmental Sciences is organising a programme entitled Biological Diversity in Qatar as part a Life Science Symposium today and tomorrow.

DNA molecules inspire scientists to enginner nanotube structures

Inspired by the biological example of how DNA molecules elegantly self assemble to form higher order 3D structures, scientists used DNA and gold particles to engineer nanotubes that form a number of different 3D structures.

Discovery of new mechanism for cell division

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Hebrew University scientists reveal mechanism that triggers differentiation of embryo cells

Jerusalem, December 21, 2008 –The mechanism whereby embryonic cells stop being flexible and turn into more mature cells that can develop into specific tissues has been discovered by scientists at the Hebrew University of Jerusalem. The discovery has significant consequences towards furthering research that will eventually make possible medical cell replacement therapy based on the use of embryonic cells.

Revised development proposals for Biological Sciences and Mathematics

Members of the public, University staff and students are being invited to view the latest proposals for creating new research and teaching accommodation for the University’s departments of Biological Sciences and Mathematics.

HU scientists discover gene mechanism that could lead to...

Two veteran Hebrew University-Hadassah Medical School researchers have accomplished the equivalent of turning omelets back into eggs by discovering the mechanism of differentiation, in which embryonic cells lose their flexibility and turn into more mature cells. The mechanism could be used to develop specific tissues and eventually to repair diseased organs.

Genetic Diseases More Complicated: Mechanism Underlying Alternative Splicing Of Premessenger RNA Into Messenger RNA Discovered

An international research team led by Tim Nilsen, Ph.D., a professor of medicine and biochemistry and the director of the School of Medicine's Center for RNA Molecular Biology, has discovered an unexpected mechanism governing alternative splicing, the process by which single genes produce different proteins in different situations. The new mechanism suggests that curing the more than half of genetic diseases that are caused by mutations in the genetic code that in turn create mistakes in alternative splicing may be considerably more complicated than biomedical researchers have previously assumed.

Using light to move and trap DNA molecules

A major goal of nanotechnology research is to create a "lab on a chip," in which a tiny biological sample would be carried through microscopic channels for processing. This could make possible portable, fast-acting detectors for disease organisms or food-borne pathogens, rapid DNA sequencing and other tests that now take hours or days.

Using light to move and trap DNA molecules

A major goal of nanotechnology research is to create a "lab on a chip," in which a tiny biological sample would be carried through microscopic channels for processing. This could make possible portable, fast-acting detectors for disease organisms or food-borne pathogens, rapid DNA sequencing and other tests that now take hours or days.

A new type of biological camera can trace several different molecules at once in a live animal

Deutsche Forschungsgemeinschaft funded instrumentation enables world-class research in electron microscopy

Many tracers make light work: A new type of biological camera can trace several different molecules at once in a live animal

Figure 1: Compound image from a Compton camera showing the positions of three different radioisotopes, zinc (red), strontium (blue) and iodine (green), in a live mouse. (This work was completed in compliance with Japan's ethical standards for experiments on live animals.) Reproduced from Ref.1 © 2008 by permission of The Royal Society of Chemistry (RSC)

Bostrom, de Grey, Rushkoff answer Edge's Big Question for 2009

Whether abrupt and singular, or more gradual and multi-polar, the transition from human-level to superintelligence would of pivotal significance. Superintelligence would be the last invention biological man would ever need to make, since, by definition, it would be much better at inventing than we are. All sorts of theoretically possible technologies could be developed quickly by superintelligence — advanced molecular manufacturing, medical nanotechnology, human enhancement technologies, uploading, weapons of all kinds, lifelike virtual realities, self-replicating space-colonizing robotic probes, and more. It would also be super-effective at creating plans and strategies, working out philosophical problems, persuading and manipulating, and much else beside.

Biological Warfare

Biological warfare, also known as germ warfare, is the use of pathogens such as bacteria, viruses or other disease causing agents to infect a population or area in order to cripple enemy forces.

Biological sensor that detects Salmonella may be used for food safety

A microscopic biological sensor that detects Salmonella bacteria in lab tests has been developed by an Agricultural Research Service scientist and university colleagues. The sensor could be adapted to detect other foodborne pathogens as well.

Biological mystery of ?speciation? gene uncovered

A breakthrough has shed light on the biological mystery of why there are so many different types of species in the world after the discovery of a “speciation� gene in budding yeast by Academia Sinica (AS) researcher Leu Jun-yi (呂俊毅), the academy announced yesterday.

Creating a Web Site: The Missing Manual, Second Edition

The thoroughly revised, completely updated new edition of Creating a Web Site: The Missing Manual explains how to get your site up and running quickly and correctly. Whether you want to build a personal web site, an e-commerce site, a web site for a specific occasion or promotion, or a blog, this book gives you everything from planning to launching, with detailed instructions and clear-headed advice for using ready-to-use building blocks, powerful tools like CSS and JavaScript, and Google's Blogger.

Molecules: Science news of the year, 2008

Science News writers and editors looked back at the past year's stories and selected a handful as the year's most interesting and important in Molecules. Follow hotlinks to the full, original stories.

Another rate cut possible, says central bank governor

Another rate cut possible, says central bank governor http://www.shanghaidaily.com/article/?id=384707&type=Business

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