proton

Advancements In Genomics Foster Deep Sea Discoveries

...vel fermentative process, adaptations to electron, proton and nutrient transport across membranes and a large number of previously unknown genes. Scripps has been a pioneer in researching life in the deep ocean abyss for more than 50 years. Bartlett’s studies follow the pioneering work in the 1950s of Clau...

New technique helps researchers determine amino-acid charge

...me neutral upon releasing them. "One thing is the proton affinity of an amino-acid residue when the amino acid is dissolved in a lot of water in, say, a glass beaker; another thing is the affinity for protons in the complex microenvironment presented by a membrane protein," Grosman said. "For the first tim...

A salty tale: New bacterial genome sequenced from ancient salterns

...ea. A photosynthetic protein, rhodopsin works as a proton pump, capturing light energy and using it to move protons across the membrane and out of the cell. In doing so, the protein maintains a balance of ions inside and outside the cell. "It's very unusual to find the two different types of rhodopsin in ...

Polymer aids in blood clotting, pointing way to new treatment

...ed pyrophosphatase, a pump-like enzyme that allows proton transport. He named it the acidocalcisome for its acidic and calcium components. Docampo has since found virtually identical pyrophosphate-containing pouches in numerous prokaryotic organisms, challenging the theory on the origin of eukaryotic organ...

Stem cells can repair torn tendons or ligaments

... detected using a special type of imaging known as proton DQF MRI, developed by Prof. Gil Navon at Tel Aviv University, which recognizes differences among collagen-containing tissue such as tendon, bone, skin, and muscle. The authors note that BMP and Smad proteins are involved in other tissues such as nerv...

Chocolate, wine, spicy foods may be OK for heartburn, Stanford study finds

...hanges they recommend. These days that's usually a proton pump inhibitor, which reduces the amount of acid secreted in the stomach. Gerson said that for the most part, medication alone is adequate to treat the symptoms of heartburn. "The main reason they probably have heartburn is that their sphincter musc...

'Pinball protons' created by ultraviolet rays and other causes can lead to DNA damage

...gia have discovered for the first time that when a proton is knocked off one of the pairs of bases that make...University of Georgia studied how the removal of a proton from the Guanine-Cytosine (G-C) base pair is involved in creating lesions that can lead to replicati...

One therapeutic dose of radiation causes 30 percent spongy bone loss in mice

... typically receive either gamma or, less commonly, proton radiation. Astronauts on a Mars mission are expected to receive extended periods of low-dose radiation of multiple types, including protons and heavy ions, Bateman said. Source "A murine model for bone loss from therapeutic and space-relevant s...

Smoking changes brain chemistry

...f Bonn in Germany. Dr. Gür and colleagues used proton magnetic resonance spectroscopy (MRS) to study 21 ...rs compared the data collected from the smokers to proton MRS data collected from 35 age- and gender-matched healthy controls. The results showed that the...

Mars mission Risk 29: Scientists research ways to reduce radiation-induced brain damage

... of California Irvine, Irvine, Calif., high energy proton dose-rate and mixed field effects on neoplastic transformation in vitro Jerry Shay, University of Texas Southwestern Medical Center, Dallas, risk assessment of space radiation-enhanced colon tumorigenesis Betsy Sutherland, Brookhaven National L...

Brains can recover from alcoholic damage but patients should stop drinking as soon as possible

...scanned using magnetic resonance imaging (MRI) and proton MR-spectroscopy upon admission and after short-term sobriety. Only the patients that managed to abstain from alcohol without receiving any psychotherapeutic medication were included in the study, and those with secondary alcohol-induced disorders, as...

Procedure predicts embryos most likely to result in pregnancy

...es as well as ones that did not. "We found that proton NMR, a non-invasive nuclear magnetic resonance form of spectroscopy, will determine the metabolic profile of the embryo and accurately predict its reproductive potential," said Seli, who plans to confirm the findings in a larger trial. ...

Shedding new light on proteorhodopsin

...established that proteorhodopsin is a light-driven proton pump, able to transport protons across cellular me... E. coli and observed the response to light of the proton motive force (pmf), the electrochemical potential of protons across cellular membranes that bacteria...