Tag: "add" at biology news

Fly bites plant, but plants can bite back, Purdue scientists find

...vered resistance gene that can kill the insect may add a new defensive weapon for the grain crop. Using the new gene in combination with other genes is expected to extend resistance time to the most economically damaging insect of wheat by as much as six times. Scientists from Purdue University and the U...

JCI Table of Contents, September 15, 2003

...ects the progression of HIV disease. These authors add that the present study "provides important clues as to how HIV infection leads to CD4+ T cell depletion and AIDS". It is still not clear how HIV induces this chronic state of immune activation and why this is so disruptive to the proper overall funct...

Lasker Award honors Rockefeller University biochemist for pioneering studies of gene activation

...to the metabolic state of the cell. These findings add to a growing body of research from the Roeder lab that is beginning to define more specific physiological roles for the poorly understood coactivators. Four decades of honors Roeder was born in Boonville, Indiana, in 1942. He received a B.A. degree...

New chemical process can separate, manipulate carbon nanotubes

...trol nanotube chemistry, Strano and his colleagues add water-soluble diazonium salts to nanotubes suspended in an aqueous solution. The diazonium reagent extracts an electric charge and chemically bonds to the nanotubes under certain controlled conditions. By adding a functional group to the end of the ...

Purdue biologists receive nearly $18 million to study infectious diseases

...attacks of 2001," Thompson said. "These new grants add to this effort and will not only better prepare us for a bioterrorism attack, but will also enhance our ability to deal with any public health crisis, such as SARS and West Nile virus." The antivirals project will constitute Purdue's contribution to ...

Schizophrenia and bipolar disorder could have similar genetic causes

...chizophrenia and bipolar disorder. I would like to add that this research would not have been possible without the support of the Stanley Medical Research Institute." In an accompanying Commentary (p 758), Kenneth L Davis from the Mount Sinai School of Medicine, New York, USA, states: "The observation th...

UNC researchers identify protein crucial to gene silencing

...hed Aug. 29 in the science journal Molecular Cell, add important knowledge to the understanding of epigenetic signals. These chemical signals affect the modulation of gene expression - activation or repression - throughout the genome. Studies at UNC and elsewhere have shown that epigenetic phenomena unde...

Study provides new insights into emerging theory of gene regulation

...on, it helps a histone acetyltransferase enzyme to add an acetyl group at a second location on the same histone molecule. The acetylation of the histone then is thought to prompt a loosening of the DNA coils around the histone to permit transcription of the gene on that length of DNA. "Five to ten years ...

Research on relative species abundance provides new theoretical foundation

... start with an already complex hypothesis and then add even more complexity. Physicists tend to start wit...the simplest hypothesis they can think of and then add complexity only when they're forced to by the data. Maybe this is why they jumped on my Neutral Theo...

Scientists at TSRI create new strain of yeast with 21-amino acid genetic code

...nd nuclei. By demonstrating that it is possible to add unnatural amino acids to the genetic code of yeast...d, nobody had ever found a way to get organisms to add unnatural amino acids into their genetic code. The five amino acids that Schultz and his colleagues...

UC Berkeley museum biologists to repeat 85-year-old Yosemite National Park wildlife survey

...inder of the 22 "Grinnell" sites in the park, plus add some new ones in the northern tier, an area of the park Grinnell did not visit. "Soon after I arrived at the museum (in 2000), I sat down and read a paper Grinnell wrote in 1910 on the uses of a research museum in which he laid out really, really cl...

Discoveries made about cellular reaction processes from ancient life

...e defined a family that shares the same ability to add alpha glutamate," says Graham. "But we don't know why, yet." Li also discovered another enzyme, CofE, which may predate ribosome. It makes gamma-linked glutamate bonds. Her article, "CofE catalyzes the addition of two glutamates to F 420-0 in F 420 ...

Salt controls size of DNA structures, could improve gene therapy

...ops always present there," Hud explained. "When we add positively charged molecules that bind to the DNA,...ud's team is exploring how the order in which they add salts to DNA solutions affects particle size and shape whether salts should be added before or afte...

Grant strengthens research arm of Penn State Hershey Medical Center's ALS Clinic

...k into possible causes and risk factors of ALS and add to what little information is known about this disease." In a preliminary study of 74 people diagnosed with ALS, Simmons and research partner James R. Connor, Ph.D., professor of neural and behavioral sciences, Penn State College of Medicine, found t...

New compound class found to trigger changes in cell garbage can

...es look like regular circles; when the researchers add the peptide, the proteasome takes a dumbbell shape. Substances cannot easily get into the proteasome and its activity range is restricted. As a result, it will destroy only a small number of proteins. "So this is a new mechanism of action, a ne...

Models show gene flow from crops threatens wild plants

...at differs genetically by only one gene. They then add complexity, or, as Ives says, "more realism." That...ach season from the previous year's seed. But they add that more investigation is needed. The goal of the gene flow models, explain the researchers, is to ...

Edible food wraps can keep kids' sandwiches fresh and the environment cleaner

...s can protect meat in home freezers. And they also add to a healthful diet because each wrap is equal to a serving of a fruit or a vegetable. "Another advantage of these wraps," she explains, "is that they can provide a glaze or a sauce for cooking. You can use a tomato or ketchup-flavored wrap to hambur...

Lone gene could force re-think on pest insect control

... to affect the fitness of individuals. This could add to the problem of controlling pest species should the gene be found in these species as well," says Bogwitz. "This highlights more than ever that what we do today to control pests could irreversibly change the gene pool of that species," he says. Th...

Genome researcher analyze chromosome 7

...ealth. Each chromosome that we analyze will likely add a new twist or turn." In their analysis of the highly polished reference sequence, Dr.Wilson and his colleagues identified approximately 1,150 protein-coding genes on chromosome 7, about 20 percent less than the 1,455 predicted in a previous study by...

Science historians ponder naming 'enemies' in science literature

...al use of metaphors of human conflict because they add a strong bias to scientific discussions. "When ecology uses metaphors that are drawn particularly from the social experiences of warfare and strife and conflict, it becomes problematic. In some cases the rhetoric in ecology is such that if you transl...

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