Tag: "bacteria" at biology news
New biosensor rapidly detects deadly foodborne pathogen
...ed a sensor that can detect the potentially deadly bacteria
Listeria monocytogenes in less than 24 hours at co...most at risk of contracting the disease. The bacteria
classified as Listeria include six different species, but only L. monocytogenes can infect humans. T...
Biologists ID molecular block for social 'cheaters'
...oorganisms: when slime mold amoebae run out of the bacteria
they eat, they group, then form a fruiting body in which about one-fifth of the single-celled individuals within the colony sacrifice themselves to form the stalk that holds up the spores. Before forming a stalk, the colony goes through a stage where...
Botulism bug says no to nitric oxide, provides key to molecule's role in human cell signaling
...ules, nitric oxide (NO), from a toxin to anaerobic bacteria
the planet's oldest life form into a beneficial signaling molecule in higher animals. It also offers an explanation for how the decades-old practice of treating meat with sodium nitrite prevents life-threatening food poisoning known as botulism. ...
Yale scientists find cooperative RNA switches in nature
... new riboswitch (RNA regulatory sequence) class in bacteria
that operates as a rare "ON" switch for genetic regulation of the three proteins in a glycine processing system. "This seems like something only a biochemist can appreciate, but what it really means is that modern RNA has what it takes to run the com...
Emory chemists develop bacteria that may help decaffeinate coffee
... an important advance in harnessing the ability of bacteria
to make new molecules, and their discovery could e...allivan. His research team is interested in making bacteria
synthesize molecules that they would otherwise not make on their own, resulting in molecules that ma...
Study describes basic mechanism in cell growth control involving damaged DNA
... Degradation also occurs when proteins of invading bacteria
or viruses are recognized as faulty. "In addition, the cell uses protein degradation as one major way to regulate its own activity, to rid itself of proteins no longer needed, including the tumor suppressor protein p53," said Xiong. This protein stop...
Cooperation to create a new tuberculosis vaccine
...ction provided by BCG to be so limited because BCG bacteria
fail to induce the complete immune response requir...e that our technology can also protect against the bacteria
causing TB. With Stefan Kaufmann and the MPI-IB we have found a highly renowned and experienced part...
UF scientists have bionanotechnology recipe to find elusive bacteria
... beef or provide a crucial early warning alarm for bacteria
used as agents of bioterrorism and for early disea...bodies -- molecules used to seek specific types of bacteria
-- and attaches, or "conjugates", them to tiny dye-loaded particles. "A bioconjugated particle is ...
INEEL uses extremophile bacteria to ease bleaching's environmental cost
...friendly. Scientists have found Thermus brockianus bacteria
produce a hardy enzyme that can be put to work bre...ide can rid fresh fruits and vegetables of harmful bacteria
such as Salmonella and E. coli; pasteurize dairy products; and sterilize paper food packages such as...
Laboratory test of evolutionary theory confirms importance of links between populations
...-Researchers studying the evolutionary dynamics of bacteria
and viruses in bubbling glass tubes have confirmed... were able to track adaptations that arose in both bacteria
and virus populations and show that the pattern of adaptations depended on both the environment in w...
Antibiotic identified as potential anti-cancer candidate
... that was formerly thought to be important only in bacteria
has now been shown to be a potential target for an...ting an enzyme in humans that is similar to one in bacteria
called peptide deformylase (Pdf) and have found that an antibiotic called actinonin, which inhibits ...
Discovery might improve design, effectiveness of anti-cancer drugs
...e enzyme cytidine deaminase, which is derived from bacteria
and many other sources, mark the first time that scientists have detected a water molecule inside a protein molecule by mass spectrometry, he said. A report on the research appears in the latest issue of the Proceedings of the National Academy of Sci...
Gene-altered mouse is model for rare autoimmune syndrome
...ls are those that directly attack invaders such as bacteria
and viruses, while B cells are the armament factories of the immune system, producing antibodies that recognize and attack such invaders. While other genetically altered mouse models had been produced that showed similar symptoms, those animals...
Genetic data crunching achieves milestone at Stanford
...n yeast to cancer-causing genes to what happens to bacteria
when they're deprived of iron. Microarray data have also allowed scientists to understand how various drugs affect the malaria bug, to find out what the immune system attacks in patients with autoimmune diseases and to pinpoint genes involved in mult...
OHSU study: Bacterial switching mechanism key to survival
...ass of drugs that disrupt a crucial mechanism that bacteria
use to adapt to available energy sources, and esse...he mechanism behind the ability of "gram-positive" bacteria
to switch their metabolic programs to take advantage of the best-available carbon source for energy....
Clues to improving TB treatment
...n in-depth look at a protein found in tuberculosis bacteria
suggest that the protein can be disabled when it b...lecules. With this protein sidelined, tuberculosis bacteria
become more sensitive to treatment by a "second-line" drug called ethionamide, or ETH. Second-li...
New method studies living bacterial cells
...ry have found a new way to study individual living bacteria
cells and analyze their chemistry. In research published today in Science, the scientists used high-energy X-ray fluorescence measurements for mapping and chemical analyses of single free-floating, or planktonic, and surface-adhered, or biofilm, cel...
Bug's-eye-view of urinary tract reveals E.coli infection genes
...f the 5,611 genes in a pathogenic strain of E.coli bacteria
were turned on, or expressed, in mice with urinary...ion levels for the CFT073 strain of E. coli as the bacteria
grew in three different environments. The first was a container of nutrient-rich Luria broth. The se...
Insects implicated in the evolution of new human infectious diseases
...s with the help of nematode worms. This family of bacteria
are known as Photorhabdus (glowing rods) because t...an diseases. "Understanding the mechanism that the bacteria
use to change their disease-causing ability is important if we are to successfully treat emerging in...
A clear view of mycobacterial infection
...amakrishnan and colleagues have now shown that the bacteria
have a game plan of their own. One problem in und...n that is somehow involved in the virulence of the bacteria
Ramakrishnan and colleagues have observed that RD1 is actually required for granuloma formation and...
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