Tag: "described" at biology news

Duke Researchers Discover Central Role Of Nitric Oxide In Hemoglobin Action

... regulatory "allosteric"function that has not been described before, Stamler said. Allosteric regulationis when one molecule causes a protein to change its shape and, thereby,its function. Hemoglobin is "a classic allosteric protein" becauseits function depends on whether or not oxygen is bound to it,Stamler s...

Enzyme's "Magic" May Hold Key to Anticancer and Antimicrobial Drugs

...nuary 18 issue of Nature , the scientists described the detailed, three-dimensional x-ray structure of yeast topoisomerase II, which is closely related to two forms of topoisomerase II in humans. In the April 30 issue of the Proceedings of the National Academy of Sciences ...

New Cancer Switch Discovered By Duke Medical Center Pharmacologists

... & Development, is one of three different advances described by the scientists in October and November, all of which point toward new ways to interfere with the malignant machinery of cancer cells to kill them. In a second paper in the October issue of Molecular and Cellular Biology, the scientists reported ne...

Duke Geologists Explore Alternative Way To Measure Ice Age Sea Bottom Temperatures

...er and colleagues from Duke and other institutions described how the fossilized remains of marine crustaceans c...ometer. It won't be convoluted." For the research described in the Science article, Dwyer worked with ostracod expert Thomas Cronin of the U.S. Geological Surve...

Enticed By A Chemical Tease, Female Beetles Are Rewarded With A Nuptial Gift To Protect The Next Generation

...ring, secreted from a gland in his head. Next, as described in the June 25 issue of Proceedings of the National Academy of Sciences (PNAS), the female samples and ingests the offering, and responds by yielding to the male's copulatory advances. Much more of the chemical is transferred to the female beetle i...

Cornell Researchers Precisely Date Wood From Ancient Tomb In Turkey

...goal is to connect early chronologies like the one described in Nature to the present, to create an "absolute chronology." By way of explanation, Newton offers this scenario: "You go to a forest today and take a sample from a tree that you know grew to 1996. By counting 200 rings, you know that the tree is ...

New Sensor Provides First Instant Test For Toxic E. coli Organism

...ng. The device is a modification of one originally described in the journal Science by former Lab scientist M...his surface is the color-changing signaling system described by Bednarski and Charych. The Biomolecular Materials Program focuses on adapting nature's bi...

Robots, Virtual Reality & Other "Smart" Tools Soon Will Help Physicians Heal Patients

...ided therapies, robotics and teleinterventions are described in a new 135-page report, edited by Anthony M. DiGioia, Takeo Kanade and Peter Wells. The report summarizes the findings of the Second International Workshop on Robotics and Computer Assisted Medical Interventions, held in Bristol, England, June 23-2...

Blood Test Can Identify Some Children With Strep-Related Behavioral Disorders

...ated for strep throat, she said. The researchers described their trait marker, D8/17, in the January issue ofthe American Journal of Psychiatry. Their study involves testing for thepresence of D8/17 in 27 young people with OCD and tics associated with strep,nine children with Sydenham's chorea, which is a ...

Virus May Be Linked To Obesity -- Early Findings Hint At Relationship

...had the antibodies. Dr. Nikhil Dhurandhar described the findings Mon., April 7,at the Experimental Biology annual meeting in New Orleans. An assistantresearch scientist in the UW Medical School department of medicine,Dhurandhar conducted the research with UW Medical School Professor ofMedicine and Nut...

Purdue Researchers Prod Plants To Clean Up Pollution

...logy, Goldsbrough and his Australian collaborators described a mutant strain of Arabidopsis thaliana (a plant in the mustard family, often used in laboratory testing) that can't defend itself against cadmium. Then they figured out why it was so susceptible to cadmium poisoning. "Normal Arabidopsis plants p...

Hopkins Engineering Undergrads' Inventions: Power Tools For Double Amputee, Military Surveillance Robot

...s of students involved insome of the 1997 projects described in this release: Power Tool Attachment Device for Double-Amputee: Mili Ashar -- Briarcliff Manor, N.Y. Jay Humphries -- Potomac, Md. Aaron Kim -- Tigard, Ore. Snake-Like Surveillance Robot: Josh Nisenbaum -- Topsfield, Mass...

Scientists Use Magnetic Field As Alternative To Space-Based Zero Gravity

... in the BiophysicalJournal. The scientists first described their findings at the March 1996annual meeting of the American Physical Society. Their study marked the firstaccount of living creatures levitated in a magnetic field. Last April,researchers in the Netherlands reported use of a magnetic field to levi...

Houseflies May Transmit Ulcer Bug

...el. H. pylori is a bacterium that was first described in the early 1980'sby a group of Australian researchers who theorized its connection toulcers. It is the cause of most duodenal ulcers and an estimated 70-80percent of gastric ulcers. In the late 1980s researchers at StanfordUniversity showed it was...

New Evidence For Corn's Ancestry Could Lead To Insect And Drought Resistant Crops

...ics . That article updates experiments originally described in the June, 1995issue of Economic Botany . She will report on her work again at anAugust meeting of the American Institute of Biological Sciences in Montreal. If Tripsacum is indeed a corn ancestor, then breeders could takeadvantage of some of t...

Natural Shelters on Leaves House Plant Bodyguards

...atic conditions,"he said. Domatia were originally described in the late 1800s by Swedish naturalistAxel Lundstrom, who proposed that these structures offer mutual benefitsto both the plants and to certain protective insects and mites. His notionlay dormant until about a decade ago when a few research groups a...

Genetic Trickery Offers New Way to Target HIV

...s and disrupt itslife cycle. The novel strategy is described in the June 6 issueof the Journal of Biological Chemistry . "This turns the normal process by which HIV replicatesagainst itself," says Joseph Rosenblatt, the lead investigatorand head of Hematology/Oncology at the University of RochesterCancer...

Huntington's Disease Findings Pave Way For Potential Cure

...r MolecularGenetics in Berlin, and colleagues have described the changes with unprecedentedclarity. The cellular and biochemical mechanisms they have discovered could be astarting point for the development of new drugs that could interrupt theprogress of Huntington's disease or prevent it in people at risk. ...

Progress In Prion Research: Three-Dimensional Structure Of Prion Protein Fully Uncovered

...and attached like a flexible tail to the structure described a year ago,the so-called C-terminal domain PrP (12...hose findings. They demonstrate that the structure described then isindeed part of the whole protein. What is new is the discovery that the entireremainder of th...

Planned Burning In Forests A Boon To Several Species Of Birds In Illinois

...ical Society ofAmerica in Albuquerque, N.M., Brawn described his work in the Peoria Wilds,a series of conservation areas along the Illinois River, and in the SandPrairie Scrub Oak State Natural Area to the south in Mason County. "When you burn, some bird species go down in abundance," hesaid. "Fire selects a...

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