Tag: "coli" at biology news

Learning to fight an adversary that won't stay down

... of new pathogen varieties like multi-resistant E. coli and Staphylococcus aureus (MRSA), the bacterium that causes methicillin-resistant tuberculosis, provide good examples of the challenges we face, says Dr. Davies. Ironically, he says, advances in molecular biology techniques have shown just how adept...

Jumping gene helps explain immune system's abilities

...iscovered in experiments in test tubes and with E. coli bacteria.Although this loop distances Hermes from its well-studied cousins, theHermes protein still has an important family trait, the researchersreport. Colleagues at the National Institutes of Health found that afew key building blocks in the prote...

UCSD Discovery Shows How Embryonic Stem Cells Perform 'Quality Control' Inspections

...iscovered in experiments in test tubes and with E. coli bacteria.Although this loop distances Hermes from its well-studied cousins, theHermes protein still has an important family trait, the researchersreport. Colleagues at the National Institutes of Health found that afew key building blocks in the prote...

New therapy for HIV/AIDS eliminates needles and excessive toxicity

...iscovered in experiments in test tubes and with E. coli bacteria.Although this loop distances Hermes from its well-studied cousins, theHermes protein still has an important family trait, the researchersreport. Colleagues at the National Institutes of Health found that afew key building blocks in the prote...

Gene sequencing explains bioremediation 'bug'

...iscovered in experiments in test tubes and with E. coli bacteria.Although this loop distances Hermes from its well-studied cousins, theHermes protein still has an important family trait, the researchersreport. Colleagues at the National Institutes of Health found that afew key building blocks in the prote...

Rats infected as newborns grew up vulnerable to memory problems during an immune challenge

...ke symptoms,. This time, the rats infected with E. coli as newborns froze 70 percent less often than the rats who'd been injected with salt water as newborns. In other words, under immune stress, the early-infected rats learned to fear the place where they'd been shocked significantly less often than rats...

Multiple Campylobacter Genomes Sequenced

...problems. But the illness can also be caused by C. coli (also found in cattle, swine, and birds), C. upsal...NCTC 11168 and with the unfinished sequences of C. coli strain RM2228 (a multi-drug-resistant chicken isolate), C. lari strain RM2100 (a clinical isolate), ...

Programmable cells: Engineer turns bacteria into living computers

...ss and graduate student Subhayu Basu programmed E. coli bacteria to emit red or green fluorescent light in response to a signal emitted from another set of E. coli. In one experiment, the cells glowed green when they sensed a higher concentration of the signal chemical and red when they sensed a lower con...

Key mechanism in genetic inheritance during cell division identified

...1 complex, obtained from genetically engineered E. coli bacteria, and compared its effects on microtubules in vitro to the effects caused by certain Dam1 mutants. Their analysis shed new light on the structural nature of the kinetochore-microtubule interface, and may provide a biochemical explanation for ...

To Stop Evolution: New Way Of Fighting Antibiotic Resistance Demonstrated By Scripps Scientists

...a protein called LexA in the bacterium Escherichia coli promotes mutations and helps the pathogen evolve r...e to antibiotics. The scientists also show that E. coli evolution could be halted in its tracks by subjecting the bacteria to compounds that block LexA. Int...

Bee mites suppress bee immunity, open door for viruses and bacteria

...he bee immune system. They injected heat-killed E. coli bacteria into virus-infected bees that were either infested with bee mites or mite free. The dead bacteria was used to trigger an immune response in the bees in the same way human vaccines cause our bodies to produce an immune response. They checked ...

Brown-Harvard team solves mobile DNA's surgical sleight-of-hand

...bda virus, which infects and lives off Escherichia coli (E. coli) bacteria. The findings are important be...r player in the process, literally snipping the E. coli DNA strands before insertion and then sealing them up afterward. The research also suggests how thre...

Say what? Bacterial conversation stoppers

...overed. In earlier work, Xavier had found that E. coli both produces and consumes AI-2. In this study, she set up an experiment where multitudes of E. coli first produced then devoured enough AI-2 to dim the lights of the marine bacteria, essentially fool...

Bacteria are key to 'green' plastics, drugs

...ses a genetically modified form of the bacteria E. coli that metabolizes glucose and produces almost pure ...Rice's succinate technology is a mutant form of E. coli that makes succinate as it's only metabolic byproduct. The bug contains more than a half-dozen genet...

Gene Bridges And Covalys To Develop Restriction-Enzyme-Free SNAP-tag Gene Fusion Kits

... of targeting vectors, modification of BACs and E. coli chromosomes, as well as viral engineering. Gene Bridges, an EMBL spin-off, is headquartered in Dresden, Germany and maintains a commercial centre is in Heidelberg. For more information, visit: www.genebridges.com ...

Researchers uncover E. coli's defense mechanism

...o Salmonella bacteria. The pathogenic forms of E. coli and Salmonella are usually transmitted to humans through undercooked meat, unwashed vegetables and cross contamination from surfaces on which these foods were prepared. Infections from either of these organisms can cause diarrhea, abdominal cramps an...

New technique rapidly detects illness-causing bacteria

...iety of bacterial pathogens, including Escherichia coli (E. coli ). The new biosensor works in a test tube and a positive result shows up as a red line on a strip, ...

Tagging pathogens with synthetic DNA 'barcodes'

...is added to a solution containing, for example, E. coli bacterial DNA, only probes with a particular color code will be programmed to bind to that DNA. The results can be seen under a fluorescent light microscope using colored filters that pass only one color at a time. A signal in which the ratio of inte...

Beyond genes: Lipid helps cell wall protein fold into proper shape

...ic proteins associated with it. In a strain of E. coli lacking PE, the GabP protein misfolded, with two a...cent compared to the transfer rate in unaltered E. coli with PE. GabP is the third membrane protein that Dowhan and colleagues have shown to be affected by...

One bacteria stops another on contact

...s that when turned on block the growth of other E. coli bacteria that they touch. The finding was a comple...are present in E. coli, including uropathogenic E. coli that cause urinary tract infections, and similar genes may be present in other pathogens such as the...

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