Bacterial Toxin Surprises Scientists
...se it is relevant to all the proteins that end up inserted in the cell's membrane [such a...s it. For example, although one end of the protein is already anchored to the membrane by two transmembrane stretches (see ...Tumor Suppressor Gene Located In Liver Cancer Cells
...r four years of study, Jirtle said, "We are at the end of the beginning."...New 'Twist' In Proteins Offers Possible Route To Improved Antibiotics
...s of which are "right-handed." Thatis, when viewed end on, the helix spirals away in a clockwise directio...consists of a novel "left-handed"beta helix at the end called the NH2-terminal. The other end of the enzyme,called the COOH-terminal, features coils called...Core Spins Faster Than Earth, Scientists Find
...ned closely with the inner core's fast axis.On one end was a seismic monitoring station; on the other, a quake-proneregion that consistently generated many seismic waves to study.They compared the arrival times of seismic waves that traveledthrough the inner core and those that passed merely through theo......project and installed within a million cars by the end of the decade. VDO also expect spin off technology from the project enabling them to produce pollution sensors for automated housing for disabled and elderly people....End Of World Population Growth Projected For 21st Century
...ween 320million to 400 million by 2020. Toward the end of the next century, thepopulation may shrink only if migration is greatly restricted and if the USA hasa long period of below-replacement fertility. Lower birth rates affect not only the total population size, but also agedistributions. The latte...Impact of Meteorites, Drop in Sea Level Caused Mass Extinctions 65 Million Years Ago
...lso may have caused some of the extinctions at the end of what is known as the Cretaceous period. Marshall and Ward present evidence demonstrating that a combination of factors caused the mass extinctions. Marshall applied statistical analysis to a well-preserved and well-documented fossil recor...Two Long-sought Diabetes Gene Found
...roportion of diabetes in Mexican-Americans, to one end of chromosome 2. In September, a Scandinavian study indicated that MODY3 may be the same gene as NIDDM2; different forms of the gene, the researchers suggested, may contribute to both early- and late-onset versions of NIDDM.Now both MODY1 and MODY3 h...Moving DNA Molecules With Magnetic Tweezers
...olution, biotin automatically attaches itselfto an end of a DNA molecule, giving it a tiny magnetic partn...hat coils itself into theshape of a ball. When one end is pulled by a magnet, the moleculestretches into a narrow trumpet-like shape. Wirtz used themagneti...New Study Shows Steps Leading To Colon Cancer
...ection of evidence," Peifer wrote. "The best cases end with a smoking gun, clinching the guilt of a suspect. This issue of Science contains three such smoking guns ... firmly establishing beta-catenin as an accomplice in causing colon cancer and as a strong suspect in melanoma. As in many crimes, however...Overweight Cats Risk Disease And Premature Death, Cornell Study Finds
...an both play with -- something that dangles on the end of a line, for example -- and get that cat off the couch a couple times a day....Isle Royale Moose Continue Decline
... was an abundance of balsam fir browse on the east end of the island. Interestingly, he says, those trees grew up when wolves had reduced the moose herd to 700-800 animals back in the 1970s. Under the best conditions, mountain ash, aspen, and willow are the favored browse species of moose, but when those...Munching Microbes Make A Meal Out Of Toxic Substances
... of Bioremediation Journal, to be available at the end of April. Nies says the knowledge gained from his studies may help in understanding how and why microbes eat other types of toxic chemicals in the soil, and how they might be used in bioremediation efforts. Nies and his students have taken samples fr...First Planned Release Of Captive Lemurs In Madagascar Wilds Expected In Fall
...that weknow lemurs eat there," Welch said. "At the end of the month,the door will be opened, but we may not immediately cut off the food. We'llcontinue to supplement their diet for as long as it takes for them to reliablylocate food trees in the area. As they do that, we'll reduce and eventuallyeliminate...Summer Science: Firefly Babies Advertise Their Bitter Taste, UD Researchers Say
...mice to associate light with abitter taste. At one end of a Y-shaped maze, they placed a single piece ofcrispy rice cereal. A second piece of cereal was soaked in a stomach-turningconcoction of quinine sulphate and mustard powder before being placed on theother side of the maze, which was rigged with a l......nds to finalize its plant-pesticides policy by the end of 1997....Evolutionary Advantage Found For Sex
....So if you combine sex with natural selection, you end up with a fitterpopulation."...Coming Extinction Of One Of UK's Most Minuscule Plants Yields Information On Climate Change
...pring (1997) many of the burns had dried up by the end of June giving many remote houses cause for concern. By studying the plant the researchers will be able to determine if aberrations in weather are becoming part of a longer term pattern. If climate change is occurring and these weather patterns bec...First Salmonella Vaccine For Poultry To Be On The Market Soon
...e (USDA) is expected to license the vaccine by the end of 1997. Megan's vaccine will be the first salmonella vaccine for poultry marketed in the United States. Curtiss reported the vaccine test results July 29, 1997, at the International Veterinary Vaccines and Diagnostics Conference, held in Madison, ...Research Team Discovers Key Gene For Telomerase Enzyme In Humans
...proved cancer diagnosis and treatment. The end portions of chromosomes, called telomeres, containrepeating sequences of DNA that protect the chromosomes from damage, saidToru Nakamura, a CU-Boulder researcher, Howard Hughes Medical Institutescientist and lead author on the study. Since portions ...