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Tag: "packaging" at biology news

The connector rotation hypothesis? Phage do not pack their DNA by rotation

...chers then looked at connector movement during DNA packaging in six ö29 mutants. After attaching the fluorescen...he connector complex, they set the mutants to work packaging DNA in a flow chamber. As the connectors functioned, the researchers shone homogeneously polarized l...

Scientists reveal structure of gateways to gene control

...ortant is that we now have a better idea about how packaging the DNA in nucleosomes controls the expression of a gene," Pugh said. "We don't yet know where all the important gene-regulation features are located on the DNA molecule, but now we know we should start looking for some of them on the edges of nucle...

Researcher examines polymers created with poultry feathers

...in Chicago, Ill. "Twelve percent of all plastic packaging ends up in landfills because only a fraction is recycled," said Barone. "Once in the landfill, it doesn't biodegrade. The challenge is how can we create a simpler plastic bag or bottle that will biodegrade?" According to Barone, the technology to ...

Edible coatings will be the packaging of the future

...s has driven researchers to develop new systems of packaging that prolong the useful life of the products and t...known example of the application. However, it is a packaging system particularly efficacious for conserving foodstuffs that are high in polysaturated fatty acids...

Nano-devices hold promise for early-stage cancer detection

... square feet and include a clean room, bonding and packaging facilities, characterization facilities, and prototyping and testing. "The development of this unique infrastructure complements research already underway at McMaster in the related fields of biomedical engineering, manufacturing and materials, in...

Iowa State researchers improving plastics made from corn and soy proteins

...isposable wraps for hay bales, pots for plants and packaging for the food industry. Grewell, Kessler, Howard Van Auken, a professor of management, and Gowrishankar Srinivasan, a graduate student in industrial and agricultural technology, are working on the plastics project with two Iowa companies, the Verm...

Researchers find protein that silences genes

...netics, the goal of which is to understand how the packaging of DNA and its associated proteins can affect gene expression. In plants, as well as animals, some epigenetic traits are stable and can be inherited when a cell divides or even into the next generation. Pikaard explains that understanding how some ...

University of Minnesota researchers take new look at cellular suicide

...In the past, people thought histones were just for packaging DNA," said Dong, who studied a histone named H2AX. "People believe H2AX plays a role in DNA repair. But we find that if DNA can't be repaired, the cell undergoes apoptosis. The histone H2AX is probably important for both apoptosis and DNA repair." D...

Researcher gives hard thoughts on soft inheritance

...itions to one of the DNA bases and the alternative packaging of the DNA. These so-called epigenetic modificati... environment in the rat studies can change the DNA packaging on the genome, and that that is 'remembered' in the cell divisions that make the rest of the organis...

Unraveling the viral mechanism

...ing to host cells, injecting DNA into the cell and packaging it during the virus formation. "This methodology, in theory, can be applicable to other kinds of human viruses," said Chiu. In fact, he said, this bacteriophage appears structurally similar although smaller than the herpes simplex virus, which cause...

Relationship of brain and skull more than just packaging

People usually think of the skull as packaging for the brain and researchers usually investigate them separately, but a team of researchers now thinks that developmentally and evolutionarily that the two are incontrovertibly linked. The researchers, including biological anthropologists, physici...

Microbes convert 'Styrofoam? into biodegradable plastic

...icine and can be used to make plastic kitchenware, packaging film and other disposable items. The biodegradable plastic is resistant to hot liquids, greases and oils, and can have a long shelf life. But unlike polystyrene, it readily breaks down in soil, water, septic systems and backyard composts. Worldwide,...

Gene keeps neural cells on correct developmental path

...ch associate in his lab. In contrast to the tight packaging of neural genes in other cells, REST keeps the chromatin in embryonic stem and precursor neurons open and poised for gene activity. "REST keeps the brake on lightly until a trigger tells embryonic stem cells it's time to make a neuron," Mandel said....

Basis for DNA ejection from single phage particles

...pothesized that the internal pressure built during packaging of the DNA in the phage capsid was responsible for DNA ejection. This pressure results from the condensation of the DNA during morphogenesis ?for example, another group recently showed that the pressure at the final stage of encapsulation for a parti...

Scientists identify genetic pathways essential to RNA interference

...counterparts - code for proteins involved with the packaging and processing of RNA, but others may be involved with the regulation of DNA itself, including the repair of DNA damage. "These new steps indicate there is more to RNAi than RNA destruction," says Kim. "And the connection to DNA damage pathways, whic...

FDA Warns Consumers Not to Use Home-Use Diagnostic Kits Marketed by Globus Media

...side the packaging. The envelope, instructions and packaging may not accurately identify the manufacturer, packer or distributor. The name of the kit appears on the instructions. Consumers who have these products should not use them. Anyone who has used one of these test kits should be retested using valid te...

Scientists identify genetic pathways essential to RNA interference

... counterparts ?code for proteins involved with the packaging and processing of RNA, but others may be involved with the regulation of DNA itself, including the repair of DNA damage. "These new steps indicate there is more to RNAi than RNA destruction," says Kim. "And the connection to DNA damage pathways, whic...

Protein Packages Found To Activate Genes; May Be What Regulates Development And Disease

...of Harvard and M.I.T., where a complex analysis of packaging of two entire human chromosomes was done for the f...hromatin have only a few "on" tags, but in regions packaging clusters of HOX genes hundreds of such tags exist. Yeast cells don't have such clusters, but HOX clu...

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