Researchers study oldest oak east of the Mississippi
...ecological patterns of this region and, perhaps, a glimpse of future climatological patterns for Ohio. Studying the tree rings also indicates how adverse weather conditions affect a tree's life. Scientists date trees by counting the number of rings inside a tree's trunk. They determine climatological and e...Scientists find gene that fuels 'sexual arms race'
...als dress for reproductive success, but provides a glimpse of the genetic changes that, over time, lead to the evolution of new animal species. "Fundamentally, the difference between species is in their DNA," says Sean B. Carroll, a professor of genetics at the Howard Hughes Medical Institute at UW-Madison a...DNA "Motors" are key to virus replication
... in a virus, providing scientists with their first glimpse of such a motor system. The study revealed how the core of a tiny motor, just millionths of a millimeter in size, is constructed and suggests how it works to pack long stretches of the virus' genetic material into its outer shell during the process ...Study reveals structure of DNA packaging motor in virus
... in a virus, providing scientists with their first glimpse of such a motor system. The study describes atom-by-atom how the core of the tiny motor, just millionths of a millimeter in size, is constructed and suggests how it works to translocate, or pack, long stretches of the virus' genetic material into i...Debate over genetically modified food gets an educational home on the web
...entific circles, but the public gets just a narrow glimpse of the debates, usually in highly charged news articles. That will change this week with the launching of a Web-based forum that will provide the public and policy makers with the tools to understand the debate over genetically modified foods (GMF)......nson Cancer Research Center have gotten a backward glimpse into primordial biology, capturing the dance of a genetic fossil in motion. Their work, published today in Nature, is the first to capture the structure and choreography of an intricately folded ancient biological molecule as it twists and turns to c...Penn paleontologists locate a new genus of colossal dinosaur along an ancient coastline
...ariya Oasis paleontological site has allowed a new glimpse into the age of dinosaurs in northern Africa," said Thomas R. Holtz, Jr., a vertebrate paleontologist at the University of Maryland not involved with the Penn team. "Of obvious significance is the discovery of a truly gigantic sauropod dinosaur, clo...Study uncovers structure of key molecule responsible for clearing drugs from the body
... Cancer Center. "Our work provides the first close glimpse into how that is accomplished." Also, the drug-drug interaction PXR causes in humans can be dangerous, Redinbo said. "Imagine you are taking oral contraceptives and at the same time the herb St. John's wort," he said. "It's known that a co...Survival of quaking aspen groves a complex problem
...s this a much more complex problem." To provide a glimpse at the complexities of forest behavior, especially in the light of clear cutting, fire suppression and other environmental changes, Taylor, who studies a variety of aspects of the Basin's forests, has produced an online exercise, "Lands in Transition...Fire ant queens and workers negotiate truce' on colony sex ratio
...ts raised in their colonies. The conflict offers a glimpse into a complex insect society that is neither an absolute monarchy under the control of the queen, nor a workers' paradise where the queen is a slave to the will of her offspring. Rather, workers and queens have arrived at a kind of negotiated middle...Molecular structure could advance understanding of human disorders
...Hopkins University. "For the first time, we have a glimpse of a docked complex between a copper enzyme and its copper chaperone partner and have gained new insight in remarkable detail into a metal transfer mechanism. Given the large number of human disorders that have been attributed to copper and oxidati...T cell responses in aplastic anemia
...em cells. Here, Zeng and coworkers provide a first glimpse at some quirks of the immune system in AA patients. These authors have prepared T cells from within the marrow of 5 people with serious but treatable aplastic anemia. Cloning and DNA analysis of the T cell receptors from one of these patients shows t......e journal Science that provides the first detailed glimpse of a membrane transporter protein, a finding that could be useful for improving cancer therapy and fighting antibiotic-resistant bacteria. Antibiotic-resistant bacteria are a major problem in public health in the United States and worldwide. The Worl...Blood vessels trigger development of the pancreas
...er its development. The finding provides the first glimpse of a new type of biochemical signaling pathway that may prevent the pancreas, and possibly other organs, from developing until a blood-supply pipeline is in place. According to the researchers, the source of the blood vessel signal may prove useful t...Earliest evidence of lemurs discovered in Pakistan, far from their current home, Science reports
... year old lemur species provides an extremely rare glimpse into the evolution of strepsirrhine primates, which consist of lemurs and their close relatives, the lorises. Although the strepsirrhines are a diverse group, there is virtually no fossil record for lemurs, making their pre-Madagascar days a paleonto...Primitive microbe offers model for evolution of animals
...a of the first multicellular animals may provide a glimpse of how single-celled organisms made a critical evolutionary leap. In analyzing the single-celled choanoflagellates, scientists discovered that the organisms have a type of molecular sensor usually found in multicellular animals. This is the first tim...Microbe genes help scientists reconstruct animal origins
...eve of animal evolution. "We're starting to get a glimpse of the genetic tool kit we have in common. In choanoflagellates, we've found genes that heretofore were believed to exist only in animals. It's a confirmation of the idea that the genes come first, before their exploitation by organisms." The gene-b...Scientists use seals as 'underwater eyes'
Technology provides rare glimpse of rare fish species By employing one underw...m at McMurdo Station in Antarctica provides a rare glimpse into the habits of two very important Southern Ocean species, the Antarctic silverfish and the Antar...Folding upon binding: unique protein activation mechanism found by scientists at TSRI
...hermore, the work provides biologists with a first glimpse of a synergistic folding mechanismwhich may be a commonplace occurrence in the cell. The two proteins are a nuclear receptor coactivator and the general transcription coactivator called CBP, and their structure is reported in the current issue of the...