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Tag: "biochemical" at biology news

UCSD study finds anthrax toxins also harmful to fruit flies

...it flies can be used to study the link between the biochemical activities and physiological effects of anthrax toxins. Learning how these toxins attack developing and adult tissues is important because it can help scientists understand how they function at the molecular level and may lead to new therapeutic str...

Scientists develop protein-sequence analysis tool

...d been previously predicted from structural and or biochemical studies to be important for the enzymes' specificity and/or function."This suggests that CPDL will have broad utility for identifying amino acid residues likely to play a role in distinguishing protein classes," Shanklin said. Scientists have alread...

Poison + water = hydrogen. New microbial genome shows how

... and colleagues identified what may be the minimal biochemical machinery necessary for any microbe to sporulate. Thus studies of this poison eating microbe may help us better understand the biology of the bacterium that causes anthrax. Building off this work, TIGR scientists are leveraging the information from...

A salty tale: New bacterial genome sequenced from ancient salterns

...h salt concentrations. Researchers recognized this biochemical adaptation: it's the same one used by archaea also living in the salterns. That wasn't the only similarity. Scientists also found two types of rhodopsin genes: one variety typical for bacteria, and another previously recognized in archaea. A photosy...

Texas scientists discover how a hepatitis C protein promotes liver cancer

...l Branch at Galveston (UTMB) have identified a key biochemical connection between the hepatitis C virus and liver cancer. The molecular mechanism is similar to the one that links the human papilloma virus (HPV), the cause of genital warts, and cervical cancer, according to Dr. Stanley M. Lemon, the senior autho...

Superconducting magnet attracts molecular research

...tissue diagnostic tool. It is used in chemical and biochemical research because it is the most sophisticated analytical tool available for determining the three-dimensional structure and motion of biological molecules in solution. The average hospital-based MRI has an electromagnetic field of about 7 Tesla, whil...

'Computer-chemistry' yields new insight into a puzzle of cell division

...tly, their insights arose not just from meticulous biochemical studies, but also from using sophisticated simulat...ole in the cell division cycle, said Rudolph. That biochemical role is for the enzyme to remove the phosphates from two phosphate-bearing amino acids on the protei...

Technique offers new view of dynamic biological landscape

...iously uncharacterized proteins, and to define how biochemical pathways and proteins interact with one another. E-MAP will enable new understanding of how genes and proteins function in the cell, said Jonathan S. Weissman, a Howard Hughes Medical Institute (HHMI) investigator at the University of California, S...

Similar Stem Cells In Insect And Human Gut

...under the microscope but they also had specialized biochemical methods to slow and inhibit the contraction, to freeze-frame it, and to discern details of the calcium fuel system. Earlier research had identified a cellular protein, spasmin, as the possible calcium-responsive component of the stalk. "The Vortice...

Are U.S. Flu Death Figures More PR Than Science?

...under the microscope but they also had specialized biochemical methods to slow and inhibit the contraction, to freeze-frame it, and to discern details of the calcium fuel system. Earlier research had identified a cellular protein, spasmin, as the possible calcium-responsive component of the stalk. "The Vortice...

Nano springs eternal; Protozoan 'engine' posts nano records

...under the microscope but they also had specialized biochemical methods to slow and inhibit the contraction, to freeze-frame it, and to discern details of the calcium fuel system. Earlier research had identified a cellular protein, spasmin, as the possible calcium-responsive component of the stalk. "The Vortice...

Bacteria that cause tooth decay able to survive without important biochemical pathway

...require. Scientists have long believed a certain biochemical pathway involved in the folding and delivery of pr...t with skepticism ?because the dogma was that this biochemical pathway is key for all living cells," said study investigator Jeannine Brady, Ph.D., an associate pr...

How E. coli bacterium generates simplicity from complexity

...ve confirmed the complexity of individual parts of biochemical networks in E. coli and other model organisms, but our large-scale reconstruction of regulatory and metabolic networks involving hundreds of these parts has shown that all this genetic complexity yields surprisingly few physiological functions. This ...

Image of myosin-actin interaction revealed in cover story of Molecular Cell

...physics at the University of Vermont. Functional, biochemical assays were conducted by collaborators from the University of Vermont, directed by Kathleen Trybus, Ph.D. ...

Discovering the first steps in transcription-coupled repair

... very early death. Through an ingenious series of biochemical experiments, Cooper and her colleagues discovered evidence that XPG and CSB must work together in recognizing stalled RNAPII. The researchers learned that these proteins spot stalled RNAPII whether or not there is damage to DNA -- suggesting that a h...

Novel enzyme offers new look at gene regulation

...dding methyl groups to histones." Zhang devised a biochemical strategy to isolate proteins that could remove methyl from histones inside a test tube. The result was the identification of a novel protein, JHDM1A, named for JmjC histone demethylase 1A. A similar protein exists in baker's yeast and has the potenti...

Phenotype is influenced by nature, nurture and noise

Unscripted biochemical variations, or noise, leads to oscillations in gen...puter model shows that a combination of unscripted biochemical variations, or noise, leads to oscillations in gene regulation that couldn't otherwise be predicted....

Noise And Delays Explain Why Some Genes Oscillate In Activity

...they can enhance it. Because CX717 has a different biochemical action, it may be more beneficial than stimulants for counteracting the cognitive effects of sleep deprivation. But that doesn't mean we should throw away our pillows and blankets just yet: sleep deprivation affects both body and mind. ...

Clocking in Pillow Time without the Pillow

...they can enhance it. Because CX717 has a different biochemical action, it may be more beneficial than stimulants for counteracting the cognitive effects of sleep deprivation. But that doesn't mean we should throw away our pillows and blankets just yet: sleep deprivation affects both body and mind. ...

Researchers show how air pollution can cause heart disease

... plaque deposits and also active participants in a biochemical pathway related to inflammation. The study revealed several signs that this pathway was more active, strengthening the connection between airborne particles and cardiovascular disease. ...

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