Enzyme's "Magic" May Hold Key to Anticancer and Antimicrobial Drugs
... workings of one topoisomerase have been laid bare by a group of researchers led by NIGMS grantee Dr. James C. Wang, the Mallinckrodt Professor of Biochemistry and Molecular Biology at Harvard University. In the January 18 issue of Nature , the scientists de...A New Biochemical Link Established Between Stress, Sex And Dominance
...placed over half the floor and the other half left bare as a refuge from territorial wars. The fish were all new to one another; none had been raised in the same tanks. Most of the males were still sexually immature. The males immediately began vying for patches of territory. For the first few weeks, owne...Protein Implicated In Multiple Sclerosis
...nerve cells in the brain and spinal cord, creating bare patches and scars. Likedamaged electrical wires, these nerve cells are unable to transmit impulsesefficiently, so patients develop sensory and muscle problems. The coating,called myelin, is made of lipids and proteins. "For years, researchers...ASU Professor Helps In Fight To Protect Japanese Pika Habitat
...ith little round ears. Their fur-covered feet, but bare toe pads and sharp,curved claws help them climb from rock to rock with ease, whether it is inTibet, California or Japan. Fossil remains indicate the pika family is more than 30 million years old.Pikas probably originated in Asia, where all but two of...Lake George Water Is Death On Zebra Mussel Larvae
...edcorpses stink on hot sandy beaches. They torture bare feet, drive out tourists,steal food from native mollusks, and disrupt the fragile ecosystem. But celebrations of the discovery should be tempered by the fact that zebramussels in more advanced stages of maturity can enter Lake George aboard boats,bai......osurvive these same conditions, leaving the steppe bare following drought orheavy grazing. Blue grama is also an important member of so-called mixed-grass prairiesthat stretch from eastern Wyoming north into Canada. "If there is a cause-and-effect relationship between temperatureincreases...Keep Off The Grass And Take Off Your Shoes!
... Rooms with carpeted floors, when compared to bare floor areas, generallyhad higher levels of tracked...D, according to the journal article. Inhomes with bare floor entryways, the highest levels of the herbicide were foundin carpeted living rooms and bedrooms...Divers may soon wax lyrical about some new hot installation -- The water's fine
...he waxes must melt at a temperature below that of bare skin-about 33C. Similarly, the waxes must freeze at temperatures as high as 18 C to provideenough heat to the diver. So far, the warming effect lasts for about the first half an hour or soof the dive (Ocean Engineering, vol 26, p 547), but th...Agronomists offer alternative approaches to gulf pollution
... A second key factor in nitrate leaching is bare ground, according toBrouder. "Nitrogen exists ...ve a place forthe nitrogen to go," she says. "With bare ground, nitrification is going on andthe nitrate is getting away. With plants, they take it up and h...New microscopy method reveals molecular map of biological surfaces
...oscope's readingwhen compared to a reading using a bare tip, thus showing the presence of theprotein in the region being scanned. To help insure that the antibody-tippedprobe is truly sensitive, a strand of polymer connects the antibody to the tip,providing a "tether" that allows the antibody wiggle and s...USGS fire research in the southeast
...tation,"says Grace. "The ground ends up completely bare of other vegetation." Making matters worse is the fact that Chinese tallow is extremely fireresistant. In a natural community, when there is an accumulation of woodyvegetation, fire can come along and burn it out, says Grace. Chinese tallow,howe...USGS studies wildfire ecology in the western United States
...tephenson says. Sequoia seeds require contact with bare soil in order to germinate, and this is possible only when fire has cleared away the layers of leaf litter and debris. The loss of fire in sequoia groves has greatly affected the population. "Fire exclusion by humans has done more than the last ...Nearly identical controls of immune genes in mice and humans hint at new asthma treatment
...alf-inch worms commonly bore into the body through bare feet and make their way to the gut where they reproduce. A female can produce more than 20,000 eggs per day. The interleukins regulate the intestinal immune response to the worms, and combine to orchestrate smooth muscle contraction, production of mu...UCSF researchers reveal a fundamental decision-making unit of cells
...al decision-making apparatus of a cell down to its bare essentials, revealing the inner workings of one of...zed what they call a "mini-N-WASP protein" -- the bare bones of the node protein that is still capable of integrating signals. They used this to tease apar...Tallgrass prairies may provide early warning of climate change
... think about a desert environment, there's lots of bare ground between plants. Knapp said even though regions with tallgrass prairies have less rainfall variability, the ecosystem and its plants are well adapted to respond to that variability. "They grow very rapidly in wet years, yet can survive drought ...Arctic ecosystems being nibbled away
... dry patches more than three feet across still had bare centers even after 20 years, largely due to wind erosion. The researchers also found that lasting changes can result from disturbances that leave the plant layer intact. One of the most widespread disturbances in the Arctic is heavy tracked vehicles...Changes in agricultural practices help clean up Lake Erie
... as much as 500 percent, because water soaked into bare ground and leached nitrogen from the soil during the winter months, according to the researchers. During other times of the year, Whiting and Moog noted that changes in agricultural practices resulted in improved water conditions. They found phosph...DNA testing identifies suspect bacteria in coral reef disease
...tes across a coral colony, leaving dead tissue and bare coral skeleton in its wake. By sequencing the entire 16S rRNA gene a genetic fingerprint found in all living organisms geologist Bruce Fouke and postdoctoral microbiologist researchers Jorge Frias-Lopez and George Bonheyo at the University of Illi...Planting time for forest trees branches out to new seasons
...as. The key is containers. Rather than plunge the bare roots of tiny trees into the soil, research is showing that seedlings grown in containers until the moment of planting, then planted with the potting medium intact around the roots isn't as shocking to the transplants, according to Dr. Mike Messina, ......bine with algae to form lichens, which can grow on bare rock and begin breaking it down, the first step in soil formation. They digest fallen leaves and wood, helping to recycle piles of detritus that would otherwise choke the landscape. Also, fungi often form extensive associations with the roots of tree...