Tag: "add" at biology news

22-amino acid bacterium created by Scripps scientists

...o, nobody had ever found a way to get organisms to add unnatural amino acids into their genetic code. Earlier studies by Schultz's group described the incorporation of a number of single unnatural amino acids with a variety of uses in chemistry and biology into E. coli and into the yeast Saccharomyces ce...

Uncertainty in clinical tests raises health care costs

...ent uncertainties in clinical laboratory tests can add large amounts to health care costs, according to a...ors in measurements of calcium levels in blood may add between $60 million and $199 million to U.S. health care costs annually. High calcium levels can be ...

Nerac to expand patent collection with 17 more resources

...has recently signed an agreement with Univentio to add 17 additional patent databases from around the world. Beginning this month, Nerac plans to incorporate the patent files over the next year and a half. Clients will receive updates as each new database becomes available to Nerac, currently scheduled a...

Unnatural light-dark cycles expose duelling circadian clocks

... described anatomical subdivisions. The results add to a growing awareness that it is a network of multiple oscillators, not only throughout the brain and body but also within the SCN itself, that underlies the workings of the circadian timing system. In humans, some of the symptoms arising from jet l...

Children's eating patterns show 'striking' changes in two decades

... patterns and overweight status in children." They add that further research is needed to better understand the impact of dietary intakes on the increasing numbers of children who are overweight and at risk for obesity. "The Bogalusa Heart Study provided valuable insight into what both children and youn...

Kinase backgrounder: Iressa discovery part of major kinase project at Dana-Farber

...ocusing on tyrosine kinases, so named because they add the phosphate to tyrosine, an amino acid component of the protein. Many kinases, largely the tyrosine kinases, have been implicated in cancer. These on-off proteins may get stuck in the "on" position, continuously sending signals for the cell to grow...

Discovery helps explain how cells package DNA

...1p, works in conjunction with an enzyme complex to add histone proteins to newly made DNA. Histones are proteins that form tiny spools around which DNA is wound during packaging. The combination of DNA and its proteins is known as chromatin. "DNA is the brains behind all that happens in a cell," says lea...

Technique plucks rapidly evolving genes from a pathogen's genome

... faster or slower than the genome as a whole. "We add up over an entire gene which triplets it's using, and then we ask, 'Would we expect to see this kind of usage of triplets just by chance or not?'" Fraser said. "If not, it's unusual and gives us a clue to how the gene has been evolving." "We need the...

Gene defect linked to premature aging

...y of other genes in two different ways: helping to add chemical groups to DNA, in a process known as methylation, or by modifying protein structures called histones that help wind DNA into compact coils. "In order to grow and stay alive, cells depend on the PASG gene to reduce the activity of other genes...

Ocean dye to help Rutgers scientists trace Hudson River's path miles into the Atlantic

... As the study progresses, Rutgers scientists will add the data to computer models for predicting plume behavior and content under a wide range of conditions. Such information will be useful, for example, in predicting potentially dangerous algae blooms along the coast and making decisions about sewage d...

Harvard Stem Cell Institute hosts inaugural symposia

... as today's. Within a few years, Harvard hopes to add a central physical location for the institute, complete with laboratory facilities, but does not have specific plans at this point in time. Though some researchers would continue to work in their own labs at different locations, the physical closenes...

Making a friendlier mosquito

...nome under the right circumstances. Scientists can add a new gene into a transposon and use it to carry that DNA into the insect genome. But it's in the interest of that transposon to just get rid of the extra DNA, Hahn said. Hahn and Nuzhdin propose an alternative strategy. They suggest designing a tran...

Evolution's mirror in a fish's spines

...team's findings in natural populations of fish may add important insights into the evolutionary process, said Kingsley. "There are many theoretical predictions about whether evolution is controlled by many genes of little effect or few genes of major effect," he said. "There are relatively few examples o...

Conservation International & SC Johnson invest in Ecuador's rainforest to offset climate impacts

...lands in 2002. These types of restoration efforts add another layer of protection to this critical remnant of Ecuador's coastal rainforest that is home to a number of unique plant and animal species, including the jaguar, several small cat species, the long wattled umbrella bird, the giant anteater and ...

Decoding a sulfate-breathing bug

... alcohols as electron donors to "reduce" (that is, add electrons to) certain metals, including uranium. Other sequenced microbes that are capable of such reduction include Shewanella oneidensis and Geobacter sulfurreducens, both of which were sequenced at TIGR. "This genome will be a valuable asset ...

Purdue scientists finding ways to outsmart crop-damaging bugs

...p and simplify identifying effective compounds and add another weapon in the arsenal to fight crop-destroying insects. "If we can extend the commercial lifetime of a current pesticide with a negative cross-resistance compound, that's the best we can hope for," Pittendrigh said. The screening system for i...

East Texas feral hog numbers skyrocketed in last decade

...st Texas, but when those surveyed were invited to add comments at the end of the questionnaire, not one was positive. "I expected a few to say that they liked the supplemental income they received from leasing hunting rights, but not one had this or anything else good to say about feral hogs." One lan...

'Knock out' rose receives Texas superstar and earthkind designation

...e rigorous field trial testing to demonstrate they add beauty to a landscape with minimal maintenance and maximum protection for the environment. Knock Out was first introduced in 2000 and hailed a "breakthrough shrub rose" by the All-American Rose Selections because of its exceptional disease resistanc...

USC awarded $3.5 million to study DNA enzyme

...y, theenzyme's exquisite catalytic selectivity, to add the correct base tothe growing strand. The enzyme adds the wrong, mismatched DNA base only once inevery 10,000 to one million bases. Further proofreading drops theoverall error rate to one in a billion-about six mistakes per celldivision. Most of the...

JCI table of contents, 2 April 2004

...resident lymphocytes. The results from this study add significant information to our understanding of TCI action, and indicate that it is a safe and effective strategy for developing pathogen protection. TITLE: Transcutaneous immunization induces mucosal CTLs and protective immunity by migration of prim...

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