News tagged with protein toxin
Discovery of extremely long-lived proteins may provide insight into cell aging
One of the big mysteries in biology is why cells age. Now scientists at the Salk Institute for Biological Studies report that they have discovered a weakness in a component of brain cells that may explain ...
Feb 03, 2012 |
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Molding the business end of neurotoxins
For snakes, spiders, and other venomous creatures, the "business end," or active part, of a toxin is the area on the surface of a protein that is most likely to undergo rapid evolution in response to environmental constraints, ...
Feb 23, 2012 |
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Discovery of a mechanism controlling the fate of hematopoietic stem cells
(PhysOrg.com) -- Hematopoietic stem cells are capable of manufacturing all types of blood cells. But which factors influence the production of a specific type of cell? Until now, it was thought that this was ...
Jul 30, 2009 |
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How Botulism Paralyzes Nerve Cells: New Details Revealed
(PhysOrg.com) -- New structures of a botulism toxin interacting with a mimic of the nerve-cell protein it destroys suggest new ways to block this often-fatal interaction. Indeed, the mimic molecules have such ...
Jun 22, 2009 |
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Targeting toxin trafficking
Toxins produced by plants and bacteria pose a significant threat to humans, as emphasized by the recent effects of cucumber-borne Shiga toxin in Germany. Now, new research published on July 21st by the Cell Press journal ...
Jul 21, 2011 |
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New study helps explain how botulism-causing toxin can enter circulation
New research in the Journal of Cell Biology helps explain how the toxic protein responsible for botulism can enter circulation from the digestive system. The study appears online May 10.
May 10, 2010 |
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Raising the alarm when DNA goes bad (w/ Video)
Scientists have known for a long time that when DNA is damaged, a key enzyme sets off a cellular "alarm bell" to alert the cell to start the repair process, but until recently little was known about how the cell detects and ...
Aug 13, 2009 |
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Physicist detects movement of macromolecules engineered into our food
Toxin proteins are genetically engineered into our food because they kill insects by perforating body cell walls, and Professor Rikard Blunck of the University of Montreal's Group for the study of membrane proteins (GEPROM) ...
Chemistry / Analytical Chemistry
Sep 12, 2011 |
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A Forceful New Method to Sensitively Detect Proteins
(PhysOrg.com) -- Scientists at the Naval Research Laboratory recently reported the detection of toxins with unprecedented speed, sensitivity, and simplicity. The approach can sense as few as a few hundred molecules in a drop ...
Mar 13, 2009 |
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Researchers make significant strides in identifying cause of bacterial infections
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 ...
Apr 22, 2009 |
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Discovery of controlled swarm in bacteria
A study led by Spanish researchers from Universitat Autonoma de Barcelona (UAB) describes one of the mechanisms in which pathogenic bacteria populations control the way they spread over the surface of the ...
Jun 22, 2010 |
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'Gene silencing' may improve treatment of a deadly complication of liver disease
A technique that “silences,” or turns off, genes shows promise as a potential new treatment for liver fibrosis — the disease that leads to cirrhosis — scientists in Tennessee are reporting. Their study is scheduled for the ...
May 27, 2009 |
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