Tag: "charged" at biology news
Houston minority graduation rises in sciences, engineering as result of UH-led alliance
...$5 million, starting Oct. 1, 2004. H-LSAMP is charged
with a new vision for phase II to serve as a national model and resource for other academic institutions. Currently, the University of Houston leads the consortium of six universities and two community colleges in the H-LSAMP, consisting of UH, Texa...
Spun from bone
...rboxyl terminusa region made up of many negatively charged
amino acids. People concentrated on this region, a...cording to Shaw, because it has several negatively charged
groups that are generally thought to interact with the positively charged
groups in hydroxyapatiteor...
Cell's gatekeeper for ammonia revealed in unprecedented detail
... membrane channels -- those that conduct water and charged
molecules called ions -- have been reported over t...recise filter that prevents any other molecules or charged
molecules from leaking through this channel," Stroud said. "This ensures the health of the cell whil...
Congress to fund Sequim-based coastal security research effort
...cal governments and those in the commercial sector charged
with the security of near-shore regions. Ecker sees both environmental and security research benefiting from the new emphasis. "While PNNL scientists and engineers will apply what they've learned through environmental assessment research to our coast...
Why damaged DNA gets a case of the bends
...he DNA becomes thinner. In damaged DNA, negatively charged
phosphate groups migrate along the axis of the DNA, and that allows the molecule to bend easily. We believe it is this difference in the damaged and intact DNA that the enzymes recognize." Haranczyk said this was the first quantum chemistry simulatio...
British scientists exclude 'maverick' colleagues, says report
... perception of such scientifically and politically charged
issues turns on the way scientists present themselves to the outside world. "The image of a scientific establishment attacking and punishing individual researchers with contentious results such as the MMR vaccine controversy - has done little ...
AGU journal highlights - 29 July 2004
..., using a high-frequency energy pulse to stimulate charged
particlesand create optical emissions in the ionosphere. Kosch et al. used the EuropeanIncoherent Scatter facility to beam radio waves into the high atmosphereapproximately 235 kilometers [145 miles] above its location in Norway andproduce visible em...
Epilepsy: Signals 'brake' in brain impaired
...nt kinds of specialised pores ensure that specific charged
particles, the ions, can pass through the membrane...e Kv4.2 channel, which is permeable for positively charged
potassium ions. This channel is mainly located at the signal inputs of a neutron, the dendrites, and...
From orchards and fields to townhouses and offices
...es more and more developed, plant pathologists are charged
with trying to find ways to smooth the coexistence of non-farmers and the agricultural industry. This challenge pertains not only to California, but also to an increasing number of other states. "California has experienced major problems with the e...
Protein controls acid in cells by direct detection of volume changes, study finds
...rom the outside to come in and protons positively charged
particles from inside the cell to escape and lower the cell's acidity. The fewer protons in a cell, the less acidic it is. "The acidity in the cell is a huge signal for the cell," said Dr. Donald Hilgemann, professor of physiology at UT Southwester...
The key to cell motility
... Rac normally binds to. These bulky and negatively charged
phosphates disrupt the normally cozy bond Rac shares with RhoGDI. Freed from the RhoGDI, Rac can then become activated and move about the cell to act on its target molecules and regulate cell function. Interestingly, one of the targets of active Ra...
Scientists call for better protection for coral reefs
...een Sullivan Sealey of the University of Miami was charged
withorganizing the draft papers for membership review. Each 5000 word paperincludes a synopsis and is authored by the Society as a whole torepresent the consensus of internationally recognized reef scientists. The first four briefing papers examine...
UNC scientists block cellular enzyme activity involved in cancer progression
... FERM domain predicted a small patch of positively charged
amino acids on its surface. These amino acids are ... making cells move," Schaller said. The positively charged
region identified in this study seems to cooperate directly with other domains of the molecule, he a...
Plant disease under the homeland security microscope
...ts in a national system of diagnostic laboratories charged
withprotecting homeland agriculture. The U.S. Department of Agriculture provided funding for the National Plant Disease Diagnostic Network through the Cooperative State Research, Education and Extension Service. Five regional university coordinators...
Harvard Stem Cell Institute hosts inaugural symposia
...itute, the Harvard Stem Cell Research Committee is charged
with reviewing proposals by Harvard scientists ? including those at the new institute ? to work on human embryonic stem cells that do not qualify for federal funding. The committee is made up of faculty from several schools, including the Faculty of...
Gulf marine reserves given new life
...Council - the federal ruling authority in the Gulf charged
with recommending policy to NMFS - analyzed findings produced by Coleman, Koenig and other marine scientists that showed the reserves were working as designed. Larger fish with greater egg-producing potential were found within the protected sites tha...
New database aids medical device exporters
...ded leadership for the international working group charged
with selecting the list of procedures and materials that can be used to demonstrate compliance with the EU Directive and with similar requirements that might be imposed by other regions. The new database contains approximately 100 Reference Measurem...
Comprehensive study: We know little about environmental effects on kids
...alth-related topics recently convened a committee charged
with examining the ethics of research involving housing and children. "We are doing experiments in people's homes, trying to learn more for the sake of our kids," Weitzman says. "But if you go into somebody's home and you know that their children are...
Creating polymers that act like biomolecules
... For potential gene therapies, the positively charged
(cationic blocks) polymers can complex with DNA (negatively charged). The polymers could be used to deliver so-called suicide genes and chemotherapy drugs directly and selectively to tumors, since normal cells would be less likely to react with the p...
New polyelectrolyte inks create fine-scale structures through direct writing
...w-viscosity fluids created by combining oppositely charged
polyelectrolyte complexes," Lewis said. "The ink viscosity can be tailored over a wide range to control its flow through fine deposition nozzles of varying diameter." A spider creates its web by secreting a concentrated protein solution through its ...
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