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edf2956cbd3e0006c82d1fde31d4a26b
2009-12-12 12:10:23

Scientists studying how bacteria under stress collectively weigh and initiate different survival strategies say they have gained new insights into how humans make strategic decisions that affect their health, wealth and the fate of others in society. Their study, published this week in the early online edition of the journal Proceedings of the National Academy of Sciences, was accomplished when the scientists applied the mathematical techniques used in physics to describe the complex...

2009-11-30 16:25:01

Scientists are building a clearer image of the machinery employed by bacteria to spread antibiotic resistance or cause diseases such as whooping cough, peptic stomach ulcers and legionnaires' disease. The spread of antibiotic resistance amongst bacteria is a growing problem, making certain diseases increasingly difficult to treat. New strategies for attacking the bacteria are needed, yet virtually no novel-mechanism antibiotics are currently in development. Gram-negative bacteria "“...

2009-04-27 12:47:44

U.S. government scientists say they have decoded the structure of a protein complex secretion system that is essential for infection. The research, conducted in part at the U.S. Department of Energy's Brookhaven National Laboratory, involving a needle-like protein complex on the surface of certain bacteria may help scientists develop new strategies to thwart infection. The scientists said their research involved a needle-like protein complex known as a type III secretion system, on the...

2009-04-27 08:35:00

Decoded structure of secretion system, essential for infection, could lead to new drugs New details of the composition and structure of a needlelike protein complex on the surface of certain bacteria may help scientists develop new strategies to thwart infection. The research, conducted in part at the U.S. Department of Energy's Brookhaven National Laboratory, will be published April 26, 2009, in the advance online edition of Nature Structural & Molecular Biology. The scientists were...

2009-04-23 08:14:54

Several bacterial pathogens use toxins to manipulate human host cells, ultimately disturbing cellular signal transduction. Until now, however, scientists have been able to track down only a few of the proteins that interact with bacterial toxins in infected human cells. Now, researchers of the Max Planck Institute of Biochemistry in Martinsried and the Max Delbrck Center for Molecular Medicine (MDC) Berlin-Buch in Germany have identified 39 interaction partners of these toxins, using novel...

2009-04-16 15:35:19

A single crafty protein allows the deadly bacterium Salmonella enterica to both invade cells lining the intestine and hijack cellular functions to avoid destruction, Yale researchers report in the April 17 issue of the journal Cell. This evolutionary slight-of-hand sheds new insights into the lethal tricks of Salmonella, which kills more than 2 million people a year. "In evolutionary terms, this hijacking of cellular machinery to diversify the function of a bacterial protein is mind...

2009-03-19 10:46:15

HZI researchers identify molecular signal pathway in diarrhea illnesses The bacterium Escherichia coli is part of the healthy human intestinal flora. However, E. coli also has pathogenic relatives that trigger diarrhea illnesses: enterohemorrhagic E.coli bacteria. During the course of an infection they infest the intestinal mucosa, causing injury in the process, in contrast to benign bacteria. The EHECs adhere to the surface of the mucosal cells and alter them internally: a part of the...

2c8f30b72f070f53a7fea724642788dd
2008-03-06 13:20:00

New insights into how plant toxin ricin kills cells could help scientists develop drugs to counteract poisoningsA powerful plant toxin widely feared for its bioterrorism potential may one day be tamed using findings about how the toxin attacks cells. The findings may also help scientists combat food poisoning episodes such as those recently caused by bacteria-tainted produce and ground meat.Biotechnology researchers at Rutgers University have discovered that ricin, extracted from abundant...

2007-11-24 06:00:25

By Glick, Bernard R Todorovic, Biljana; Czarny, Jennifer; Cheng, Zhenyu; Duan, Jin; McConkey, Brendan To date, there has been only limited commercial use of plant growth-promoting bacteria in agriculture, horticulture, and silviculture. However, with recent progress toward understanding the mechanisms that these organisms utilize to facilitate plant growth, the use of plant growth-promoting bacteria is expected to continue to increase worldwide. One of the key mechanisms employed by plant...

2005-06-02 23:59:30

COLUMBUS, Ohio "“ Researchers have uncovered the link between two biochemical pathways that plants use to defend themselves against pathogens "“ pathways that scientists have long believed worked independently of each other. Knowing how these pathways of immunity work may one day help researchers breed plants that can better resist a variety of pathogens, said David Mackey, the study's lead author and an assistant professor of horticulture and crop science at Ohio State...


Latest Secretion Reference Libraries

45_d2fcb725ecc7dee8dbe887c765abd299
2011-04-14 14:17:06

Agrobacterium tumefaciens is the causal agent of crown gall disease (the formation of tumours) in over 140 species of dicot. It is rod shaped. Symptoms are caused by the insertion of a small segment of DNA into the plant cell. It is an alphaproteobacterium of the family Rhizobiaceae which includes the nitrogen fixing legume symbionts. They are pathogenic and provide no benefit to the plant. It also affects a wide variety of plants. In an economical sense it affects walnuts, grape vines,...

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Word of the Day
penuche
  • A fudgelike confection of brown sugar, cream or milk, and chopped nuts.
'Penuche' is a variant of 'panocha,' a coarse grade of sugar made in Mexico. 'Panocha' probably comes from the Spanish 'panoja, panocha,' ear of grain.
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