Tag: "crystal" at biology news

Enhancin Protein Attacks Insect Immune System

...eat part of a leaf containing the polyhedron. The crystal would be dissolved in the insect's intestines, releasing the gut-wrenching enhancin and the baculovirus simultaneously. Neither the protein nor the baculovirus will harm humans or animals, Granados said. Acidity in human stomachs and intestines ren...

Experts: Public Will Accept Irradiation In Wake Of Meat Recall

...diated food can avoid it. Linton says, "If I had a crystal ball that could predict the future, I'd say the Hudson hamburger incident may lead to consumer acceptance of irradiation in the next four or five years." Mason agrees and adds: "Data show that consumers will accept food irradiation when they learn ab...

Max-Planck Researchers Unravel The Structure Of The Methane Forming Enzyme

...ductase, a protein complex of 300 kDa size. Its crystal structure was solved to a resolution of 1.45 E ...tanoyl threoninephosphate). The highly resolved crystal structure allows a description of the binding modes of these 3exotic2 coenzymes within the pro...

Scientists Identify A Novel Mitotic Regulatory Mechanism

...ic isomerase has been rationalized based on the crystal structure and confirmed by mutational analysis. In summary, the identification of an essential isomerase that both negatively regulates entry into mitosis and is required for proper progression through mitosis provided new insights wit...

DNA Enzyme Works In Crystal Form; Yields New Insights Into Gene Copying

...s can also bemade to operate when held in place in crystal form. Their achievement opens the way for...e,scientists shine an intense X-ray beam through a crystal of protein. The crystaldiffracts the beam into a multitude of spots, and using a computer, thescient...

Harvard Medical School Researchers Present Atomic Structure Of DNA-Replicating Enzyme Widely Used In DNA Sequencing

... Other researchers had previously figured out the crystal structure of relatedenzymes but had never been abl...ctoral fellowSylvie Doublié, who produced the crystal structure, and Alexander Long, atechnician....

STS-89 Will Carry Five Science Payloads From NASA/Marshall

... concentrations vary insidea solution as a protein crystal grows in the microgravity environment ofspace. The system was operated by astronautDavid Wolf and provides video images captured on computer. Animproved understanding of how large protein molecules move through a liquidwill help scientists in tailo...

Insights Into The Proteasome - A Fascinating Macromolecular Machine For Protein Degradation

...nism of the proteasome has been a mystery until crystal structure analysis and mutagenesis studies on t...ersity of Utah, Salt Lake City, have solved the crystal structure of the heptameric complex, which is traversed by a funnel-shaped channel, the wider ...

Biologists Get First Look At DNA-Protein Binding Structure In An Archaeon

...get this new view, the researchers formed a single crystal of the proteinwith pieces of DNA from the archaeon...ocaldarius and S.solfataricus. After freezing the crystal with liquid nitrogen at minus 150degrees Celsius, they were able to determine the three-dimensional ...

Three-Dimensional Structure Of Human Lung Tryptase Determined, An Enzyme Involved In Allergic Asthma

...o, R. Huber and W. Bode) has now determined the crystal structure of human beta-tryptase provided by G. Matschiner, H. Fritz and C.P. Sommerhoff at the Department of Clinical Ch emistry and Clinical Bio che mistry at the Ludwig Maximilian University, Muenchen. The structure, publish...

Liquid Crystals Light Up Simple Chemical Test

An ingenious new use for liquid crystal displays being developed at theUniversity of Calif...le, the stamp-sizetest chip, a few drops of liquid crystal and enough ambient light for theperson running the test to read the result. The test doesn't even re...

Crystal Structure Of The Archaeal Chaperonin Thermosome, A Protein-Folding Machine, Determined

...obiology, University of Regensburg, has solved the crystal structure of the thermosome. This structure, pu... was not available for members of group II. The crystal structure of the thermosome provides clues for understanding the mode of action of group II ch...

Structure Of Tumor Necrosis Factor-Alpha-Converting Enzyme Solved - Milestone Toward Rational Drug Design For Rheumatoid Arthritis And Endotoxic Shock

... Unit for Proteindynamics in Hamburg solved the crystal structure of the catalytic domain of human necrosis factor- a <font size="3">-converting enzyme (TACE). TACE is a membrane-bound metalloproteinase localized on the outer surface of virtually every cell of the human body....

Biochemists Gain Crystal-Clear Insight into 'Ancient' Enzyme

...May 1 issue of Science thatthey had obtained the crystal structure of the protein that is part of theenzyme...que, an X-ray beam is directed through the protein crystal and isdiffracted by the crystal's atoms into a pattern of spots. By analyzingthe pattern, chemists c...

New Vancomycin Structure May Point To Path For Overcoming Antibiotic Resistance

...ly designed compounds. To analyze the new crystal form, the Penn researchers collaborated withRuss Miller at the Hauptman-Woodward Medical Research Institute, Buffalo, NY,and Charles Weeks at the State University of New York at Buffalo. Miller andWeeks, who have developed specialized computer softwa...

Space Grown Insulin Crystals Provide New Data On Diabetes

...Space Shuttle. Results from a 1994 insulin crystal growth experiment in space areleading to a new und...n," Smith said. Because of the increase in crystal size, Smith's team is able to studyin more detail, the delicate balance of the insulin molecule. Na...

EPA And UC Researchers Find Bacteria That Can Destroy Giardia Cysts

...iated withsewage outflows, it can also be found in crystal clear mountainstreams. "There does seem to be an association with wildlife," saidKinkle. "It's been called 'backpacker's disease.' You can go tovery pristine places and find Giardia ." Because Giardia is so common in surface water, Rodgersdecided...

Crystal Structure Of Key HIV Protein Reveals New Treatment Targets

... system cells. The new model of the gp120 core's crystal structure reveals specific targets foranti-HIV vac...nown features but also found some surprises in the crystal structure of the protein. "We discovered that a largepart of the gp120 surface is protected against...

NASA Research Helps Map Protein Structures -- Key In The Development Of New Disease-Fighting Drugs

...th, the influence ofgravity can interfere with the crystal growth process, and this can lead tostructural imp...rotein structures have been determined fromprotein crystal growth research, and these findings are being used to improveour knowledge of protein structures. ...

Australian Scientists In World-First Cell Discovery

... to be 90 per cent similar - so understanding the crystal structure of the IGF receptor helps us to underst...ion. The big difference is that the team's target crystal has over 7,000 atoms, whereas salt has just two. The crystals were then bombarded with X-rays, y...

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