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Scientists learn three-dimensional structure of enzyme in unusual virus

Biologists have determined the three-dimensional structure of an unusual viral enzyme that is required in the assembly of new viruses.

18 Sep 2007

Nanoparticle that delivers vaccines more effectively

Good news for public health: Bioengineering researchers from the EPFL in Lausanne, Switzerland, have developed and patented a nanoparticle that can deliver vaccines more effectively, with fewer side effects, and at a fraction of the cost of current vaccine technologies.

18 Sep 2007

Life on Mars experiment launched

Key components of a new approach to discover life on Mars were successfully launched into space Friday as part of a twelve-day, low-Earth orbit experiment to assess their survivability in the space radiation environment - a prelude future journeys to Mars.

18 Sep 2007

Scientists synthesize DNA-based memory loop in yeast cells

Harvard Medical School researchers have successfully synthesized a DNA-based memory loop in yeast cells, findings that mark a significant step forward in the emerging field of synthetic biology.

17 Sep 2007

Solid state NMR spectroscopy reveals the workings of 'Mother Nature's Blowtorch'

Using atom-level imaging techniques, University of Michigan researchers have revealed important structural details of an enzyme system known as "Mother Nature's blowtorch" for its role in helping the body efficiently break down many drugs and toxins.

17 Sep 2007

DNA as a picoforce standard

DNA, the biomolecule that provides the blueprint for life, has a lesser-known identity as a stretchy polymer.

17 Sep 2007

Zebrafish shed light on human mitochondrial diseases

Zebrafish can now be used to study COX deficiencies in humans, a discovery that gives scientists an unprecedented window to view the earliest stages of mitochondrial impairments that lead to potentially fatal metabolic disorders, according to researchers at the University of Oregon.

13 Sep 2007

Delivery of anti-cancer drug paclitaxel on a tiny ball of gold

Rice University chemists have discovered a way to load dozens of molecules of the anti-cancer drug paclitaxel onto tiny gold spheres. The result is a tiny ball, many times smaller than a living cell that literally bristles with the drug.

13 Sep 2007

Scientists isolate stem cells in womb tissue

Scientists in Australia have found a way of identifying probable stem cells in the lining of women's wombs. The finding opens up the possibility of using the stem cells for tissue engineering applications such as building up natural tissue to repair prolapsed pelvic floors.

13 Sep 2007

Biodiversity of protozoa may be much higher than previously realised

In contrast to previous findings, it seems that the global distribution of macro- and microorganisms might be similar. A study in the online open access journal, BMC Evolutionary Biology, shows that some protozoa are globally dispersed, while others are geographically restricted - by looking at a new fast-evolving DNA marker.

13 Sep 2007

One insect can initiate a biological invasion

A new study by York University biologists Amro Zayed and Laurence Packer has shown that a lone insect can initiate a biological invasion. Zayed, a recent graduate of Packer's lab, examined patterns of genetic diversity in both native European and invasive North American populations of a solitary bee.

13 Sep 2007

Was ability to run early man's Achilles heel?

The earliest humans almost certainly walked upright on two legs but may have struggled to run at even half the speed of modern man, new research suggests.

From The University of Manchester 12 Sep 2007

Mouse model for schizophrenia

Scientists at Johns Hopkins have developed a mouse model for schizophrenia in which a mutated gene linked to schizophrenia can be turned on or off at will.

11 Sep 2007

Clearer picture of how a dividing cell rebuilds the nuclear envelope

Just how a dividing cell rebuilds the nuclear envelope, the protective, functional wrapping that encases both the original and newly copied genetic material, has been a source of controversy for the last 20 years.

10 Sep 2007

A molecular probe that may one day light up tumors while surgery is in progress

Researchers at the Stanford University School of Medicine have developed a molecular probe that sets aglow tumor cells within living animals. Their goal is to use the probe to improve the diagnosis and treatment of cancer and other diseases.

10 Sep 2007

First comprehensive tests compare social and physical skills of children, chimpanzees and orangutans

Apes bite and try to break a tube to retrieve the food inside while children follow the experimenter's example to get inside the tube to retrieve the prize, showing that even before preschool, toddlers are more sophisticated in their social learning skills than their closest primate relatives, according to a report published in the 7 September issue of the journal Science , published by AAAS, the nonprofit science society.

10 Sep 2007

DNA and nanotechnology

DNA is one of the most popular building blocks of nanotechnology and is commonly used to construct ordered nanoscale structures with controlled architectures.

5 Sep 2007

Ultraconserved elements in the genome: Are they indispensable?

Three years ago, "ultraconserved elements" were discovered in the genomes of mice, rats, and humans.

5 Sep 2007

Selection on genes underlying schizophrenia during human evolution

Several genes with strong associations to schizophrenia have evolved rapidly due to selection during human evolution, according to new research in the Proceedings of the Royal Society B (Wednesday 5 September 2007).

5 Sep 2007

Probiotics could give us safer pork products

Probiotics, the friendly bacteria beloved of yoghurt advertisers, may be an effective substitute for growth promoting antibiotics in pigs, giving us safer pork products, according to scientists speaking (Wednesday 5 September 2007) at the Society for General Microbiology's 161st Meeting at the University of Edinburgh, UK, which runs from 3-6 September 2007.

5 Sep 2007