Prions may play crucial role in evolution.
...protein they studied is called Sup35. It normally ensures that yeast faithfully translate the genetic code. Specifically, Sup35 recognizes special signals that tell the entire protein production machinery to stop when it is supposed to stop. Sup35 doesn't function in its prion state. As a result, the prot......tions. While this may pose a certain risk, it also ensures the cells continued existence. Equally important, it increases genetic diversity allowing natural selection, the driving force behind evolution, to come into play. Prof. Zvi Livneh of the Weizmann Institutes Biological Chemistry Department has di...The silence of the clones: new link between DNA replication and 'silent' chromosome architecture
...damental processes, DNA replication and silencing, ensures that both DNA sequences and their associated states of gene expression are inherited by future generations of cells. The establishment and stable inheritance of silenced chromatin is undoubtedly important to many aspects of normal cell physiology an...How cells know when to stop wound-healing
...tions generated by the first integrin. This action ensures that the movement instructions from the first integrin are never in conflict with the anchoring instructions from the second integrin....LSU program for graduate education could become model for U.S.
...phase, artisans must undergo a data defense, which ensures that they have a good grasp of the research and experiments they have performed. Students who do well on the data defense are named craftspersons and are allowed to spend several months working as researchers at other universities or research labs...Progenitor cells can have protective effect against brain trauma
...ogenitor cell and a nice supply of a molecule that ensures that the cells continue to thrive." The research presented in this study is a collaborative effort between researchers at Penn and counterparts in Sweden and Spain, with whom McIntosh began an association as a Fullbright Fellow on sabbatical in Euro...New research may lead to more effective treatment of asthmatic attacks
...l a small width of the particle size distribution ensures greater efficacy for dispersing the inhalant that will ultimately benefit the patient. Source December 2001 edition of the Journal of Applied Physiology....Preventing overload in the brain
...ouble control system contributes to the memory and ensures that the brain does not 'crash', as is the case during an epileptic seizure. The neurobiologists from the University of Amsterdam carried out their observations on the hippocampus of rats. The hippocampus probably plays an important role in converti...Too much sun can harm ocean life
...ith each other during the day. This stratification ensures that both the plankton and the organic carbon are exposed to sunlight throughout the day. According to the biologists the plankton can withstand this large dose of sunlight. This can be compared to sunburn. When the sunbather seeks shelter the skin c...Conservation International and National Geographic Traveler announce World Legacy Awards
...ide an incentive to protect them. This partnership ensures that future generations may enjoy the same attributes present today. Winners will be chosen in three categories: Nature Travel This award honors a business, organization, or attraction making a positive contribution to the conservation of natu...Hopkins scientists reveal how sound becomes electric
...d the nerve may be a kind of fail-safe device that ensures a ready supply of transmitters should the sound continue or change." Hearing aids and cochlear implants are designed to boost or replace the sound-detecting function of hair cells in the cochlea. Fuchs and Glowatzki believe their discovery might help...The role of phytochromes in bacteria revealed
...way, the light signal transduction the phytochrome ensures in the bacterial cells would occur by direct interaction with PpsR, meaning a direct protein-protein interaction mechanism and not the induction of a biochemical reaction (phosphorelay) cascade, which has been the theory up to now. The researchers us...Counting semi-viable bacteria in cheese
...ria with two fluorescent substances. One substance ensures that the bacteria emit a green colour if they are active. The substance itself is not fluorescent but is converted by bacterial enzymes into a green fluorescent dye. The second substance stains bacteria with a damaged membrane. This substance emits r...Cancer-suppressing protein is part of amoeba's compass
... PTEN's presence at the sides and rear of the cell ensures that PIP2 stays PIP2 everywhere else. Interestingly, PTEN isn't just floating near the membrane at the rear of the cell, but is actually bound to it, Devreotes reports. The results show that PTEN has two critical regions: that responsible for bindin...U.Va. researchers identify switching action by protein 'gate-keepers' in cell nucleus
...one of these trucks that helps load the cargo, and ensures correct delivery. It may also help the truck distinguish among different nuclear entry codes." The nucleus of a cell is surrounded by a wall that separates the DNA from the rest of the cell. This wall contains thousands of tunnels, called pores, thro...Slightly stressed carp succumb easily to parasite
...tection of the fish. In addition to this, cortisol ensures that certain protective white blood cells die. Cor...e to their own immune system. In turn the parasite ensures that the carp immune system is so highly activated that the carp dies as a result of this. The paras...ASPB urges opposition to mandatory labeling of genetically modified foods in Oregon
...tplace. ASPB supports this testing and believes it ensures public safety. As scientists we find no reason to expect greater risk in the foods targeted by Measure 27, and based on the extensive testing mandated by the FDA, we expect these products to be safer than many items readily generated using "natural" ...Ancient defense mechanism may still be protecting us
...red by researchers at the University of Rochester, ensures that any foreign genetic material that has been inserted into the cell's DNA is neutralized before being passed on to the next generation. The research is published in the September 20 issue of Cell, and is reviewed in the recent issues of Science an...Twin sister mechanism prevents formation of genetic mutations
...of mutations. Though this poses a certain risk, it ensures the cell's continued existence. Equally important, it increases genetic diversity, allowing natural selection, the driving force of evolution, to come into play. The other last-resort repair system was hypothesized by scientists in the 1960's, yet wa......rmined an average of seven times, a frequency that ensures a high degree of accuracy. Earlier this year, the mouse consortium announced that it had assembled the draft sequence of the mouse and deposited it into public databases. (See list of URLs on pg. 7). The consortium's paper this week reports the init...