Odd energy mechanism in bacteria analyzed
...e living cell known and probably the most abundant organism in the seas. By being able for the first time to study the SAR11 "proteorhodopsin" gene in a laboratory, researchers will be able to better understand how it is activated, its role in the life and survival of SAR11, and how it affects ocean ecology.T...New microscope allows scientists to track a functioning protein with atomic-level precision
... that encode thousands of proteins, which keep the organism alive and functioning. A single misplaced letter in gene's DNA sequence--a G substituted for a T, for example--can produce a defective protein that may cause a serious disease. Transcription The Block team focused on a crucial step in the central d...Reify corporation announces Myosight(tm)
...pulation of cardiomyocytes, or even from an intact organism offers investigators the possibility of much less biased assays. I am excited by the idea that Reify is developing this service, and we have used their technology in our work on high throughput analysis of zebrafish cardiovascular function. Cardiomy...Chronic stress might harm women more than it does men
...d hypothalamus, make up the "stress axis." When an organism experiences stress, higher levels of glucocorticoi... can have beneficial implications in preparing the organism for the 'fight or flight' response. However, under intense chronic conditions, when extreme levels o...Novel protein complex enables survival in hostile environment
...dies, had found sulfite assimilation ability in an organism closely related to M. jannaschii, but had not investigated how that organism handled the sulfite toxicity. Putting all these pieces of information together, Johnson and Mukhopad...New technique multiplies life span in simple organisms
...of the longestrecorded life-span extensions in any organism and opened a newdoor for anti-aging research in hu...ly its counterpart in mammals,SIRT1, may block the organism from entering an extreme survivalmode characterized by the absence of reproduction, improved DNArepa...Researchers find pathways linking caloric restriction to aging process
... basically says that high nutrient levels make the organism grow faster and bigger, but also reduce lifespan. ...ffects aging universally. It doesn't just make the organism live longer overall, it also reduces the debilitating effects of aging and age-related diseases. Cal...Plants have a double line of defence
...s often take place that would be dangerous for the organism at any place other than inside the compartments. If a fungus tries to invade a plant cell, the peroxisomes are led over to the entry site by the attached PEN2 protein. One or more sugar molecules can be separated from another cell component through t...Lost neurons affect energy balance
...omeostasis. Energy homeostasis, the ability of an organism or cell to maintain normal biological states during adjustments to environmental changes, is governed by complex neuronal circuitry and numerous signaling molecules. When control mechanisms for energy homeostasis go wrong, the result is weight loss......ever is closely related to drought conditions. The organism involved is resistant to environmental extremes and blows around in the dust. People who work with animals are particularly vulnerable, but the animals themselves show no sign of the disease." Professor Lloyd said any outbreak of the disease, which ...Poison + water = hydrogen. New microbial genome shows how
...as. Each form of the machine appears to allow the organism to use carbon monoxide in a different way. Most o...s. Little was known about this hydrogen-breathing organism before its genome sequence was determined. By utilizing computational analyses and comparison with ...What to sequence next: Pick one species at a time
...eady had their genomes sequenced, and choosing the organism that's separated from the others by the longest se...he same genome, selecting the next most attractive organism to sequence is just as effective as having a long-term strategy." Evolutionary divergence isn't the ...Scientists fetch useful information from dog genome publications
...the dog has attracted enormous interest as a model organism for genome plasticity. In addition, dogs are susceptible to genetic diseases that are difficult to study in humans, including cancer, blindness, heart disease, deafness, autoimmune disorders, and neurological diseases, making the dog model system pa...Pretreating rogue cancer cells with aspirin cripples their resistance to targeted therapy
...ormal cells that have simply become obsolete as an organism grows and develops. Because cancer cells have lost their ability to undergo apoptosis, they continue to reproduce and spread their damaged progeny throughout the body. In recent years, scientists have gained an increasingly sophisticated understandi...Bacteria that cause tooth decay able to survive without important biochemical pathway
...vered that Streptococcus mutans, the decay-causing organism that thrives in many a mouth, can do just fine wit...utans, Brady and her team set out to learn how the organism was able to survive its own acid. To find out, the researchers tinkered with systematically turning ...Genetic clues to Sodalis deepens knowledge of bacterial diseases
...or functions. Information on the blueprint of this organism now gives us a better handle on this applied strat...e bacterial genome, they found the hallmarks of an organism transitioning from a free-living state to a symbiotic state. "It's a relatively young association be......bute to the formation of bone matrix in the living organism is suppressed when alcohol is added. Suppression is greater at higher doses, and at very high doses, cell death occurs." Alcohol can suppress synthesis of an ossifiable matrix, which interferes with fracture healing. "In order to heal properly...Researchers uncover remarkable developmental pathway
...he differentiation of embryonic cells and gives an organism its overall shape. Although researchers had known that morphogenetic fields were responsible for the embryo's remarkable resiliency, very little was understood about how they function at the molecular level, said De Robertis. For their studies, Rever...Fish gene sheds light on human skin color variation
...common aquarium pet that is widely used as a model organism for studying the genetics of development. The zebrafish reproduces rapidly, and many of its genes are similar to humans, which makes it a good model for studying genetic alterations and their roles in cancer, Cheng said. The similarities between fis...Cancer support cells may evolve, fuel tumor growth, study shows
...apel Hill scientists have demonstrated in a living organism that cancers may cause surrounding supportive cells to evolve and ultimately promote cancer growth. The new research offers what is believed to be the first evidence that mutations within cancer cells can signal surrounding tissue cells to alter thei...