bacterium 2 5

Tag: "bacterium" at biology news

Bacterial protein mimics host to cripple defenses

...sheep's clothing, a protein from a disease-causing bacterium slips into plant cells and imitates a key host protein in order to cripple the plant's defenses. This discovery, reported in this week's Science Express by researchers at the Boyce Thompson Institute (BTI) for Plant Research, advances the understandi...

Scientists map one of biology's critical light-sensing structures

...from a microbe known as Deinococcus radiodurans, a bacterium renowned for its tolerance to ionizing radiation. It was only within the last eight years that scientists from Vierstra's and other labs discovered that, like plants, some bacteria harbor phytochromes. That finding opened the way for the Wisconsin te...

Gene increases risk of tuberculosis

.... Infections with Mycobacterium tuberculosis, the bacterium that causes TB, are on the rise, with an estimated eight million new infections and two million TB-induced deaths occurring annually. But not all people who are exposed to this bug become ill -- a phenomenon largely explained by genetic differences ...

Lateral thinking produces first map of gene transmission

...teria can quickly become resistant to treatment: a bacterium with genes that confer drug resistance can, through lateral transfer, rapidly spread them to other bacteria, instead of just to their own offspring. From the early days of the science of genetics, it was assumed that transfer of genes could only be...

The bioweapon is in the post

...hem back a few weeks later, usually spliced into a bacterium such as Escherichia coli. New Scientist approached 16 such firms, identified by a Google search, to ask whether they screened orders for DNA sequences that might pose a bioterror threat. Of the 12 companies that replied, just five said they screen ev...

How E. coli bacterium generates simplicity from complexity

... these two factors are key determinants of how the bacterium organizes itself." Barrett, Palsson, and their colleagues simulated the "functional states" of E. coli's metabolic and transcriptional regulatory networks in the 15,580 environments of food sources and electron acceptors. To their surprise, no matte...

How Rickettsial pathogens break into cells

...r pathogen, to enter cells. Understanding how this bacterium interacts with the cells of its host could lead to new therapeutic strategies for diseases caused by related pathogens, including Rocky Mountain spotted fever and typhus. Pascale Cossart, an HHMI international research scholar at the Pasteur Instit...

Bacteria that cause tooth decay able to survive without important biochemical pathway

...he membrane weakens and the cell - in this case, a bacterium - becomes unable to protect itself from harsh environmental conditions. In the human mouth, its natural environment, it is typically S. mutans that goes on the attack. When sugary foods are eaten, the S. mutans population explodes, excreting lactic...

Researchers develop new method to help find deadly malaria parasite's Achilles heel

...ms -- yeast, a nematode worm, the fruit fly, and a bacterium that causes digestive-tract ulcers in humans. The authors of the study, Trey Ideker, a professor of bioengineering at UCSD's Jacobs School of Engineering, and two graduate students, Silpa Suthram and Taylor Sittler, said the malaria parasite's protei...

A salty tale: New bacterial genome sequenced from ancient salterns

...esearch and collaborators reveal the genome of one bacterium at home in the salty Spanish ponds. The bacterium is Salinibacter ruber, a bright red, rod-shaped organism. Several years ago, scientists first isolat...

Poison + water = hydrogen. New microbial genome shows how

...st recently because this is a process found in the bacterium that causes anthrax. Sporulation allows anthrax t...e may help us better understand the biology of the bacterium that causes anthrax. Building off this work, TIGR scientists are leveraging the information from th...

UCSD study finds anthrax toxins also harmful to fruit flies

...gaster. These toxins are required for the anthrax bacterium Bacillus anthracis to evade the host immune system...bacterial and viral pathogenic factors." Anthrax bacterium secretes three toxins, including LF and EF, and is only known to infect mammals. Because fruit flies...

MRSA use amoeba to spread, new research shows

...nic behaviour first evolved. A good example is the bacterium that causes legionnaires disease. Probably it was pathogenic long before humans and other animals arrived on the evolutionary scene. Even today, it has no known animal host". "The most likely reason is that Legionella and many pathogens learned th...

Minimal genome should be twice the size, study shows

...thods might also be used to build a blueprint of a bacterium with desired metabolic properties, for example identifying which genes would a bacterium need to efficiently digest specific waste chemicals. The research has been supported by the Hungari...

Microbes convert 'Styrofoam? into biodegradable plastic

...logy . The microbes, a special strain of the soil bacterium Pseudomonas putida, converted polystyrene foam ?co...researchers then supplied this oil to P. putida, a bacterium that can feed on styrene, which converted the oil into a biodegradable plastic known as PHA (polyhyd...

Scientists design potent anthrax toxin inhibitor

...Director Anthony S. Fauci, M.D. The spore-forming bacterium Bacillus anthracis produces a toxin that causes anthrax symptoms. Antibiotics are used to treat anthrax, but even with such therapy, inhalation anthrax, the most severe form of the disease, has a fatality rate of 75 percent. "There would be real val...

Scientists reveal how deadly toxin hijacks cells

...ins, of which there are seven types, are made by a bacterium commonly found in soil, known as Clostridium botulinum. Of the seven-identified by the letters A through G--botox A lasts a particularly long time in neurons. While that feature makes it especially useful in the clinic, it also means that botox A ma...

Supersized 'island' of resistance genes discovered in an infectious bacterium

...nd Genomic Information Laboratory at CNRS. This bacterium acquires resistance genes quickly--just thirty years ago it was completely susceptible to antibiotics and now it is resistant to a wide-range of antibiotics. "A. baumannii is exceptionally prone to pick up foreign DNA from other bacteria," Claverie ...

Scientists discover a new disease-causing bacterium in an immune-compromised patient

Researchers discovered a new bacterium in an immune-compromised patient, according to a study recently published in PLoS Pathogens. The bacterium belongs to the family Acetobacteraceae and includes bacteria common in the environment, some of whic...

Soil-bound prions that cause CWD remain infectious

Researchers discovered a new bacterium in an immune-compromised patient, according to a study recently published in PLoS Pathogens. The bacterium belongs to the family Acetobacteraceae and includes bacteria common in the environment, some of whic...

1 2 3 4 5 6 7 8 9 10