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Tag: "bacterium" at biology news

Cheaper, better disease treatments expected from faster approach to developing antibodies

...xpensive broth. As a result, harmless forms of the bacterium E. coli have already been used as factories to pro...method, an antibody that is produced by an E. coli bacterium becomes tethered to one of its inner surfaces, or membranes. Small "errors" in the genes that produc...

Out of Africa -- Bacteria, as well

...world, he was not alone: He was accompanied by the bacterium Helicobacter pylori, which causes gastritis in many people today. Together, man and the bacterium spread throughout the entire world. This is the conclusion reached by an international team of scien...

New antibacterials being developed to tackle MRSA superbug

...ons caused by staphylococci, including MRSA. The bacterium Staphylococcus aureus can infect wounds, including...t Staphylococcus aureus, or MRSA, is a form of the bacterium that is resistant to the drug methicillin and a number of other antibiotics and tends to be more dif...

Shedding new light on proteorhodopsin

...at when the ability to respire oxygen is impaired, bacterium equipped with proteorhodopsin will switch to solar power to carry out vital life processes. "Our research shows that proteorhodopsin contributes to a bacterial cell's energy balance only under certain environmental conditions, namely when the ce...

Secret of worm's poison pill box protein could produce new natural insecticide

...y of Warwick have discovered how a protein from a bacterium acts like a cunningly designed poison pill box th...an infect and kill insect pests with the help of a bacterium which they harbour inside their intestine. The bacterium uses a protein (XptA1) a toxin which h...

Antifungal drug kills TB bug

... in Manchester’s Faculty of Life Sciences. "The bacterium survives the initial attack by the body’s immune s...es of TB, known as MDR-TB. "We knew that the TB bacterium was a clever organism, able to evade the human immune system and to survive long-term, sometimes unn...

Bacteria control how infectious they become, study finds

...e professor of microbiology at Ohio State . “Say a bacterium has 3,000 genes ?NusG would regulate 2,900 of them.? But somewhere along the evolutionary path, NusG was copied and physically changed. The result was a specialized transcription factor called RfaH. Unlike NusG, RfaH controls only a small portion o...

Anthrax attack posed greater potential threat than thought

...etter containing spores of Bacillus anthracis, the bacterium that causes the deadly disease anthrax, was opened in Daschle's office at the Hart Senate Office Building in Washington, DC. Those in or near Daschle's office, judged likely to have been exposed to the spores, received antibiotics or a vaccine, as di...

McBride shows DNA detective work with paper-eating bacteria that 'glide'

... helped DOE do just that by analyzing the DNA of a bacterium that can break down cellulose, the major structural component of plants that is also found in forestry by-products (including paper) and waste feedstocks. Mark McBride, a professor of biological sciences, worked with DOE's Joint Genome Institute an...

Prehistoric origins of stomach ulcers uncovered

...Cambridge. He said: "Humans and this ulcer-causing bacterium have been intimately linked for the last 60,000 years. The research not only shows the likelihood that for tens of thousands of years our ancestors have been suffering the effects of this bacteria but it also opens up new possibilities for understand...

Male-killing bacteria makes female butterflies more promiscuous

...ust makes them more rampant!" The male-killling bacterium is transmitted from mother to son and actually kills the son before the embryo hatches into a caterpillar. Only female offspring of female carriers of the bacteria can survive, which can lead to the male population being as low as one male to every h...

Cloning the smell of the seaside

... February 2. "By isolating a single gene from a bacterium collected from the mud of Stiffkey marshes, we deduced that the mechanisms involved in DMS production differ markedly from those that had been predicted," said Prof Johnston. "And we discovered that other, wholly unexpected bacteria could also make t...

Genome sequencing reveals key to viable ethanol production

...duction. "This is the first revelation of how a bacterium chooses from its more than 100 enzymes to break do...t the University of Rochester. "Once we know how a bacterium targets a particular type of biomass, we should be able to boost that process to draw ethanol from b...

Cow protein aids in treatment of gastrointestinal disorder

...pylori. The study found that the infection-causing bacterium was eliminated in more patients treated with the traditional therapy plus lactoferrin than with the existing treatments and may be used without risk of resistance. “Various studies are under way to evaluate new antibiotics and different therapeuti...

Herpes infection may be symbiotic, help beat back some bacteria

...onic herpes virus infections can better resist the bacterium that causes plague and a bacterium that causes one kind of food poisoning, researchers report in this week's Nature. Scientists at Was...

New bacteria test could improve quality of fruit and vegetable juice

...and accurately identify Alicyclobacillus, a common bacterium found in apple, carrot, tomato, orange and pear juices, tropical fruit juices and juice blends. The bacterium won't cause human sickness, but it affects flavor and results in spoilage. Currently, a number ...

Molecule that destroys bone also protects it, new research shows

...ious pathogens such as Porphyromonas gingivalis, a bacterium that plays a major role in most periodontal disease in humans. The research findings appear in the current (May) issue of the journal Blood. Sarah L. Gaffen, Ph.D., associate professor of oral biology in the UB School of Dental Medicin...

Anthrax paralyzes immune cells with lethal toxin, UF research shows

...o develop a diagnostic blood test that detects the bacterium by checking for telltale changes in protein expres...a use to navigate around the body. "We used one bacterium to weed out another. I'm not aware of anyone ever doing that," Southwick said. "In an individual cel...

Scientists discover rare 'gene-for-gene' interaction that helps bacteria kill their host

...ntists have discovered that a cousin of the plague bacterium uses a single gene to out-fox insect immune defenc...idence for a gene-for-gene interaction between the bacterium and the insect," said Richard ffrench-Constant (correct) of Exeter University. "Photorhabdus is a...

Protein enables discovery of quantum effect in photosynthesis

... The protein, which comes from a photosynthetic bacterium that lives in extremely high temperatures, enabled the researches to discover that quantum mechanical effects appear to play a role in photosynthesis. The taco shell protein is arguably the most studied and understood protein in a complex photosy...

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