New 'Twist' In Proteins Offers Possible Route To Improved Antibiotics
...examples of which are "right-handed." Thatis, when viewed end on, the helix spirals away in a clockwise direction. In earlier research, Raetz and his colleagues had discovered that the aminoacid sequence of the LpxA enzyme contained sequences similar to severalother enzymes with similar function, al...Surprising Protein Movement Seen In Cells
...urnal Science. And the rapid protein motion can be viewed in avideo clip to be posted on the Internet, at the followingaddress: http://www.uchc.edu/htterasaki/flip.html The researchers were able to study the movement of proteinsthrough a revolutionary technique that uses light-emitting, orfluorescent, mol...Discovery Could Help Understand Breast-Cancer Therapies
...ersity of Illinoishave identified four amino acids viewed as leading actors in the bindingof estrogen and anti-estrogen hormones to receptor proteins in the femalereproductive system. The findings could prove to be crucial in efforts to understand how thereceptors respond to drug therapies and how they bec...Optical Microscopy Shines Light On Biology
...nstruments that use this process, the object to be viewed is placed close to a special fiber-optic probe. Laser light emitted from the probe is used to view and study samples at extremely high magnification. Dunn, along with Chad Talley, Lawrence doctoral student, and Gregory Cooksey, Quinter junior, have d...Laser Microscope At Cornell Images Serotonin In Live Cells
...h the specimen, and the resulting 3-D image can be viewed and analyzed on a computer monitor. For these studies, the researchers used basal leukemia cells from rats. "This three-photon excitation produces very high energy corresponding to shorter absorption wavelengths than was possible before, without kil...A Phoenix From A Ring Of Fire Is A Pattern For The Recovery Of Mount St. Helens
...regeneration, says Edwards. Although eruptions are viewed as cataclysmic events, they have happened many times before, and "to plants and insects around the ring of fire, it's just one more eruption to cope with."...Huntington's Disease Findings Pave Way For Potential Cure
...sity College of Physiciansand Surgeons in New York viewed HD changes in biopsied human brain cells anddescribed the damage as clumps, fibers, and masses in the cell nucleus. TheBates and Davies group and a second international team of investigators havenow, nearly 20 years later, explained what the Columbia...Gene For Last Major Form Of Batten Disease Discovered
...roidlipofuscin, which appears greenish-yellow when viewed through a microscope inultraviolet light. Defects in lysosomal function have been linked to many other disorders,including Tay-Sachs disease. "The identification of this protein in humansprovides a new avenue for investigators to explore that may le...CTC Visualizations Help Ecologists See The Forest And The Trees
...s - Analysis of a ComplexSimulation Model," can be viewed at http://www.sciencemag.org/feature/data/deutschman/index.htm . "The Web site includes scores of still images and a dozen coloranimations," noted Deutschman. "The 3D results are critical tothe readers' understanding the complexity of the model. Th......on an annual budget of up to $1 million. Initially viewed as an "experiment," in many ways the section was visionary andahead of its time. Pacific Northwest's involvement in agriculture and food processing is chronicledbelow. 1973 The Food and Agriculture Section is formed under the leadership of Lyle Per...Urban Residents Rebut Argument That Tree Removal Enhances Safety
...e journalEnvironment and Behavior -- the residents viewed 40 different pictures ofthe three 16-story buildings and a courtyard in the complex, located inone of the poorest neighborhoods in the nation. The photos showed the areaas it is, and, with computer simulations, how the area would look with varyingam...Liquid Crystals Light Up Simple Chemical Test
...d liquid crystals to produce an image that wouldbe viewed by the user but did it in a different way. In this case, a changein surface topography, not an applied electrical field, directs the orientation. The researchers set an experimental goal: to create a liquid crystalassay that would report whether an ...Reduced Nutrients Still Cause Problems In The Neuse And Tar-Pamlico Rivers
...ad, Raleigh, NC 27607. A copy of the report may be viewed on the World Wide Web at the following URL: http://water.usgs.gov/lookup/get?circ1157/ . *** USGS *** [For additional technical information, contact Tim Spruill, Project Chief, Albemarle-Pamlico NAWQA, 919-571-4088, or send email to tspruill@usgs.g...Agriculture and urban activities impact water quality in the South Platte River Basin
...x request to (303) 202-4693). The Circular may be viewed on the World Wide Web at: http://water.usgs.gov/lookup/get?circ1167 As the nation's largest water, earth and biological science and civilianmapping agency, the USGS works in cooperation with more than 2,000 organizations acr...Water Quality In Georgia-Florida Coastal Plain Affected By Agricultural And Urban Activities
...0, fax (850)-942-9521. A copy of the report may be viewed on the World Wide Web at the following url: http://water.usgs.gov/public/pubs/circ1151/...Treating Anemia Reduces Risk Of Death For People With HIV
...in peoplewith HIV/AIDS. "Anemia frequently is viewed as affecting the patient's quality of life,but our researchfound it also is linked to early death," said Richard Moore, M.D., associateprofessor of medicineand director of the program in pharmacoepidemiology and pharmacoeconomics at theJohnsHopkins U...Duke Study Helps Explain How Cells Divvy Up Genes During Reproduction
... of the Journal of Cell Science. The movies can be viewed onthe Internet at http:/abacus.mc.duke.edu/moviepage.html ....University Of Cincinnati Geologists Analyzes Evolutionary Impact Of Mass Extinctions
... contrast to Stephen Jay Gould and others who have viewed massextinctions as anover-arching tier of evolutionary processes, distinctly different than theprocesses which occur in theintervening time periods. "While I agree that mass extinctions are the largest and most important of aclass of 'catastrophes,'......ies seemto eat their own kind quite readily. Once viewed as a laboratory artifact,species specific predation is now being reevaluated. A recent study conductedby scientists at the University of Calgary, and published in the December issueof Ecology, has shown a definitive link between cannibalism and popu......es is a widespread assumption that health problems viewed ashaving a biological origin require biological interventions and those viewed ashaving a psychological origin require psychological interventions, according toGregory A. Miller, ...