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Tag: "chemistry" at biology news

New synthetic self-assembling macromolecules mimic nature

...ard Turner, MII director and research professor of chemistry at Virginia Tech, and Min Mao, a Ph.D. candidate in polymer chemistry, report the synthesis of a new family of charged, rod-like block copolymers. Only as long as a fraction of the diameter of human hair, the tiny rods can be either positive or nega...

Lead with a poisonous electron shield

... lead. French researchers have now applied quantum chemistry to very simple enzyme models and gained new insights. As they have reported in Angewandte Chemie, it seems that the lead's "electron shield" is the main culprit. Lead does the most damage to the nervous system, kidneys, liver, brain, and blood. Thes...

Triplex assay used to assay duplex genomic DNA

... "We have decided not to focus on improving probe chemistry at this time, but rather to develop a flow injection based instrument which is matched to our chemistry," continued Daksis. Their Genome Flow® instrument, which employs hardware from FIALab Instruments of Bellevue, Washington, has one moving part, th...

Walking molecule now carries packages

...e machinery," said Bartels, associate professor of chemistry and a member of UCR's Center for Nanoscale Science and Engineering. "Our experiments show a means to transport molecules reliably. This will become as important to the molecular machinery of the future as trucks and conveyor belts are for factories o...

MIT biologists solve vitamin puzzle

...at one enzyme could perform all of the complicated chemistry needed to produce DMB. "It looked like a number of things had to happen in order to make the DMB," said Walker. "We originally thought that BluB might be just one of several enzymes involved in DMB synthesis." Therefore, it came as a surprise w...

Targeting tumors the natural way

... agent we chose is already in us," says UW-Madison chemistry professor Laura Kiessling, who led the work with postdoctoral researcher Coby Carlson. "It's just not usually directed toward tumor cells." In a series of cell-based experiments, the researchers' system recognized and killed only those cells displ...

In presence of fragrant cleaning products, air purifiers that emit ozone can dirty the air

...n," said Sergey Nizkorodov, assistant professor of chemistry at UCI and co-author of the study. "These air purifiers can not only elevate the level of ozone, a formidable air pollutant in itself, but also increase the amount of harmful particulate matter in indoor air." High levels of airborne particles can...

'Terror bird' arrived in North America before land bridge, study finds

...es of disputed age with those of known age. If the chemistry matches, the bones are of the same age irrespective of their final resting place." David Gradstaff, a professor and chairman of the geology department at Temple University, said the technique is timely and important. "If a fossil gets moved or re...

Faster, low cost sequencing technologies needed to drive era of personalized medicine

...ious DNA sequencing project that combines physics, chemistry and nanotechnology with engineering. The research...program," Williams said. Williams, professor of chemistry and biochemistry, is working on a $100,000 genome project, part of the five-year goal of the NHGRI t...

ASU researchers test antibacterial effects of healing clays

... almost identical, but the different trace element chemistry of the interlayer records an older geologic condition, from a time when the antimicrobial property was likely inherited." Crystal structure, the interlayer, the way other materials, metals, ions bind to clays, the absorptive characteristics of cla...

One-of-a-kind imaging probe reveals secrets useful for drug discovery

... Jerrold Meinwald, Ph.D., an emeritus professor of chemistry and chemical biology at Cornell University, led la...l materials in terms of milligrams. Now you can do chemistry on the microgram scale. NMR has made enormous progress - it has thousands of times the sensitivity i...

Why don't all moles progress to melanoma?

...like Randal Kaufman, a U-M professor of biological chemistry and co-author on our paper, have found that the ER can sense changes in glucose, nutrients, oxygen levels and other aspects of cellular physiology associated with diseases like diabetes and Alzheimer's disease." "In our study, we found that the ER ...

Bacteria in small sea life yield new way to make potential cancer drugs

.... Schmidt, Ph.D., assistant professor of medicinal chemistry at the University of Utah College of Pharmacy and senior author on the study. "This represents a new way of attacking the problem," Schmidt said. "We're hoping we can use this to find a way to make natural molecules of compounds through single mu...

Genetically engineered blood protein can be used to split water into oxygen and hydrogen

...c atom in the middle, which completely changed the chemistry and characteristics of the molecule. This modified porphyrin molecule was then combined with albumin; with the albumin molecule itself being modified by genetic engineering to enhance the efficiency of the process. The resulting molecular complex ...

New brain-chemistry differences found in depressed women

...ral Psychiatry. It's based on brain imaging, blood chemistry and other data from 14 women with major depression, and 14 healthy women of about the same age and background. The women with depression were not taking antidepressants when the study began. "This work gives further evidence of individual differen...

NHGRI aims to make DNA sequencing faster, more cost effective

...omplementary elements that integrate biochemistry, chemistry and physics with engineering to enhance the whole ... way that will simplify the fundamental, front-end chemistry of massively parallel sequencing-by-synthesis. This method uses the natural catalytic cycle of DNA p...

Comprehensive model is first to map protein folding at atomic level

...says co-author Eugene I. Shakhnovich, professor of chemistry and chemical biology in Harvard's Faculty of Arts ...ishly intricate, protein folding is crucial to the chemistry of life. Each of the body's 20 amino acids, the building blocks of proteins, is attracted or repulse...

Comments, experts and background on the 2006 Nobel Prize in chemistry

..."This Nobel Prize also underscores the key role of chemistry in the scientific research into genetics. In order...rld's largest scientific society, and professor of chemistry at Cameron University, Lawton, Okla. BACKGROUND INFORMATION This year's recipient of the Nobel...

New technique boosts size of proteins that can be analyzed

...knesses," said Mi Jin, a postdoctoral associate in chemistry and chemical biology and one of the paper's lead authors with fellow graduate student Xuemei Han. Jin said that the bottom-up approach is often used for larger scale studies of proteins because it can identify a large number of proteins from a sample...

Selecting life: Scientists find new way to search for origin of life

...ion led by Edward Vicenzi to employ a workhorse of chemistry called Time-of-Flight Secondary Ion Mass Spectrome...luence the results." David Deamer, professor of chemistry and biochemistry at U.C. Santa Cruz, commented that "Bob Hazen is boldly asking a fundamental questi...

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