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Tag: "elements" at biology news

A new plant-bacterial symbiotic mechanism promising for crop applications

...h organisms involved: the plant supplies nutritive elements to the bacteria which in return pass on the nitrogen they have stored up. These interactions improve crop yields of leguminous plants that are crucial for human diet (soybean, peas, ground nuts and so on…) and as animal feed (alfalfa, clover, sain...

Pesticides choke pathway for nature to produce nitrogen for crops

...eeded, in addition to tests to determine the exact elements of pesticides that inhibit natural plant-bacteria interaction. ...

Progress toward an antitumor vaccine

...thetic glycopeptide antigens containing structural elements typical of tumors in the sugar as well as the protein segment,” explains Kunz, “can thus be attached to the carrier protein in a controlled fashion. The largely nonimmunogenic thioether bridges could clear the way for the development of vaccines for ...

New findings challenge established views on human genome

...plex network in which genes, along with regulatory elements and other types of DNA sequences that do not code ... build a parts list of all biologically functional elements in 1 percent of the human genome. Carried out by 35 groups from 80 organizations around the world, t...

Exploring the dark matter of the genome

...ding genes, the annotators found other significant elements in the heterochromatin, including 13 single-copy g...rich," says Smith, "and most of it is transposable elements that have been chewed up and fragmented." Susan Celniker emphasizes that transposable elements, ...

Human genetic 'deserts' are teeming with significant life

...Health, with the aim of identifying all functional elements in the human genome sequence. The pilot phase is focusing on 44 regions, totalling approximately 1% of the human genome. By testing and comparing existing methods for annotating the human genome the consortium members hope to find the most effective...

Modified mushrooms may yield human drugs

... the mushroom, and camouflaging it with regulatory elements from a mushroom gene. We then patch these genetic elements in the plasmid and insert it back into the bacterium," he added. The researchers then snipped smal...

Treating HIV in war zones -- Public health emergencies need rapid advice from WHO

...ys be possible. "Nevertheless," they say, "the key elements of contingency planning for care delivery in conflict settings are not resource-intense and we believe they can generally be applied to most care programmes." Citation: Culbert H, Tu D, O’Brien DP, Ellman T, Mills C, et al. (2007) HIV treatment in...

'Insulator' helps silence genes in dormant herpes virus

...f its neighbors. About a dozen different insulator elements have been identified in organisms as varied as yea...ulators can limit the range of action of other DNA elements that work to activate, or "turn on," the genes. Recent studies on the LAT region of the HSV-1 gen...

Scientists identify prion's infectious secret

...s in biology, and prions even may act as essential elements in learning and memory. But although prions hav...king, Tessier could activate different recognition elements by manipulating environmental conditions, such as temperature. For example, when he conducted the ex...

Automatic identification of protein's critical features from the structure

...ntists for the first time to identify the critical elements of proteins from their shape exclusively....

Researchers publish first marsupial genome sequence

...code for proteins. We must identify all functional elements in the genome if we are to have the most complete ...genomes, researchers were able to pinpoint genetic elements that are present in placental mammals, but missing from marsupials —that is, the genetic factors tha...

Genome of yellow fever/dengue fever mosquito sequenced

...States, Spain, and France to annotate transposable elements (TEs) in the Ae. aegypti genome. TEs are segments ...i appear to be degenerate, a significant number of elements have potentially active TE copies, indicating that they may be developed as tools for genetic studie...

To sleep, perchance to dream: New insight into melatonin production

...is mediated by IRES (internal ribosome entry site) elements in the 5' end of the transcript, through binding of another protein, called hnRNP Q. In fact, siRNA knock-down of hnRNP Q reduced AANAT and melatonin production under nocturnal conditions. ...

Discovery of 'master switch' for the communication process between chloroplast and nuclei of plants

...nucleus. It had been previously suggested that the elements in this process go through multiple pathways. This work shows that the elements actually go through this one particular route. "Now we are in much better shape in solving the que...

Out-of-body experiences may be caused by arousal system disturbances in brain

...tem predisposed to allowing intrusion of REM sleep elements during the transition between wakefulness and sleep. Sleep paralysis is a common form of REM intrusion, which can cause a condition of temporary paralysis along with visual or auditory hallucinations immediately after waking up or before falling a...

Beyond the DNA: Chemical signatures reveal genetic switches in the genome

...have made a breakthrough in identifying functional elements in the human genome, according to a report published online today in Nature Genetics. While the DNA sequence can identify genes (the 'what') within the genome, it cannot answer the more fundamental questions of 'how,' 'when' and 'where' gene produc...

Navigable nanotransport

...d a good carrier: nanoscopic capsules with surface elements that can "recognize" the target in question could do the trick. To date, all methods for the production of such tiny capsules require preorganized structures or "molds" to shape hollow spheres and most methods require a lengthy, tedious synthetic or...

Renegade RNA -- Clues to cancer and normal growth

...me that despite their tiny size, microRNAs contain elements consisting of short stretches of nucleotide buildi...is actively hunting for additional hidden microRNA elements that control other aspects of their behavior in cells. They also are curious to figure out what miR-...

University of Alberta researchers unravel intricate animal patterns

...as stripped out the unnecessary detail to the core elements of communication that give rise to the patterns found in large scale groups." In particular, the researchers looked at the direction from which animals can receive signals from their neighbors. "For example, some species of birds use directional c...

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