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Tag: "biological" at biology news

Scientists identify genetic pathways essential to RNA interference

...iana, both of which are common model organisms for biological research. The process interrupts the usual transfer of instructions from double-stranded DNA, through single-stranded messenger RNA and finally into proteins. Short, double-stranded pieces of RNA bind to the complementary messenger RNA segments, shut...

Brain-mapping technique aids understanding of sleep, wakefulness

...ut there is very little knowledge about the actual biological mechanism controlling sleep," said Dr. Masashi Yanagisawa, professor of molecular genetics at UT Southwestern and senior author of the study. "Eventually my dream is to elucidate all the pathways regulating sleep." Dr. Yanagisawa and his colleagues ...

Same-Sex Mating Discovered in a Toxic Fungus

...cations, Heitman said, "the more we know about the biological cause of any disease, the better positioned we are to develop cost-effective diagnostic or therapeutic interventions." The fungal strategy may also contribute to scientists' general understanding of the conditions that favor evolutionary transitions...

CoPub Mapper: mining MEDLINE based on search term co-publication

...sed genes that are potentially responsible for the biological process of interest. In order to identify biological similarities between genes, publications from MEDLINE were identified in which pairs of gene names a...

Different microarray systems more alike than previously thought

...rms were an exciting technology in the medical and biological sciences, but comparisons of results from different platforms had proved inconsistent. Previous studies indicated that Affymetrix GeneChips, for example, the commercially available and most expensive of the three platforms tested, provided different ...

Researchers unlock mechanism creating jigsaw puzzle-like plant cells

...ghbor to recede or indent itself in a finely tuned biological dance. The results are structures that, despite their delicate appearance and slenderness, provide the strength necessary to allow the plant to grow and thrive. The findings point out that these distinct signals play a critical role in the developme...

Study: 'homemade' gene expression technology unreliable

... that is hoped rapidly to advance understanding of biological mechanisms and methods to assess the actions and effects of drugs and chemicals," said Spencer, who estimates there are "hundreds, if not thousands" of laboratories around the country using DNA microarrays. Microarray platforms came into widespread ...

A puzzle piece found in unraveling the wiring of the brain

... of molecular and human genetics at BCM. "The cell biological basis of brain wiring is largely unknown. We are happy to have a new handle on an old problem." Using sophisticated genetics applied to the brain of the fruit fly, Drs. Sunil Mehta and Hiesinger found a gene named sec15 that is required for nerve ce...

Scientists journey to southern Africa to unravel the secret world of elephant communication

...he middle ear; and Robert Sapolsky, a professor of biological sciences. O'Connell-Rodwell is particularly interested in the elephant's feet and the trunk, believed to be the primary receptors of low-frequency vibrations. The trunk may be the most versatile appendage in nature. Its many uses include drinking, b...

Researchers discover underwater volcano

...olcano, Vailulu'u. Researchers explored the unique biological community surrounding the eruption site, and were ...t, the researchers were able to observe the unique biological community surrounding the newly formed volcanic cone. Much of Nafanua is covered with yellow "fluff...

Protein helps regulate the genes of embryonic stem cells

...estigation into the role eed might play in diverse biological processes. "It may give us new gene targets to study relative to cancer and other disease states that may have these marks and have not been examined but should be," Magnuson said. Another application of epigenetics is stem cell therapeutics, in wh...

Integration of Agilent's MS technology, Proteome Systems' software to help scientists in proteomics research

...on, or the addition of sugars to proteins, affects biological processes and systems. GlycomIQ comprises kits, consumables and informatics software developed specifically for automated glycan analysis. "Analysis of protein glycosylation is a demanding task that has often been reserved for specialized laboratori...

Agilent Technologies releases probe sequence, annotation information for all its commercial gene expression microarrays

...ands of experiments to profile chemical effects on biological systems, thereby creating a vast resource of gene expression responses to chemical toxicants. The data will eventually be made available through the NIEHS National Center of Toxicogenomics' Chemical Effects on Biological Systems (CEBS) database, curr...

Virus-host interactions at sea effect global photosynthesis

...ands of experiments to profile chemical effects on biological systems, thereby creating a vast resource of gene expression responses to chemical toxicants. The data will eventually be made available through the NIEHS National Center of Toxicogenomics' Chemical Effects on Biological Systems (CEBS) database, curr...

B-15A collides with Antarctic ice tongue

...ands of experiments to profile chemical effects on biological systems, thereby creating a vast resource of gene expression responses to chemical toxicants. The data will eventually be made available through the NIEHS National Center of Toxicogenomics' Chemical Effects on Biological Systems (CEBS) database, curr...

Undesirable expatriates: Preventing the spread of invasive animals

...nvasion success. Once established, they can act as biological pollutants that result in ecological and economic damages. "The best way to combat invasive species is to prevent them from being introduced. As global trade increases, precautions like port inspection and exotic wildlife regulations are essential. C...

Plant Sacrifices Cells to Fight Invaders

...lant and animal. PCD plays a critical role in many biological processes including immune system function, embryonic development and elimination of defective cells. When PCD malfunctions, or is undermined by pathogens, the effects can be devastating, resulting in diseases such as cancer, Alzheimer's and AIDS. D...

Marine sponge yields nanoscale secrets

... in translating nature's production methods in the biological world into practical methods for the development o...rought together, they function just as the natural biological catalyst does to make silica at low temperatures. The UCSB scientists are already taking the next s...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

...n the oceans and sustains highly elevated rates of biological productivity." In the gulf, wind-driven upwellings regularly bring nitrogen and other nutrients from the seafloor to the surface, stimulating the rapid reproduction and growth of microscopic algae called phytoplankton. These algal blooms are natural...

Compounds in plastic packaging act as environmental estrogens altering breast genes

...to see whether exposure to these hormonally active biological compounds could alter the genomic signatures of the mammary gland during critical stages of development." BPA (bisphenol A) is a synthetic resin used in food packaging, dental sealants and polycarbonate plastic products, which range from CDs and eyeg...

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