If you've ever suffered the misery of food poisoning from a bacterium like Shigella or Salmonella, then your cells have been on the receiving end of "nanoinjectors"—microscopic spikes made from proteins through which pathogens ...
Bio & Medicine
Mar 14, 2014
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The theory of evolution suggests that present-day organisms evolved from earlier life forms.
Biochemistry
Dec 13, 2013
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(Phys.org) —The cytoskeletal proteins of eukaryotes polymerize into self-organized patterns even as pure solutions. However, to see more complex dynamics, like filament sliding or rotation, various motor proteins and cofactors ...
When attacking body cells, bacteria, such as salmonellae or Yersinia (plague pathogens), inject specific bacterial proteins through hollow, syringe-like structures – called injectisomes – into the host cells. These substances ...
Cell & Microbiology
Dec 9, 2013
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Like the Marvel Comics superhero Iceman, some bacteria have harnessed frozen water as a weapon. Species such as Pseudomonas syringae have special proteins embedded in their outer membranes that help ice crystals form, and ...
Biochemistry
Oct 23, 2013
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Highlighting an important but unexplored area of evolution, scientists at The Scripps Research Institute (TSRI) have found evidence that, over hundreds of millions of years, an essential protein has evolved chiefly by changing ...
Cell & Microbiology
Sep 29, 2013
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Scientists have sequenced the genomes of nearly 6,900 organisms, but they know the functions of only about half of the protein-coding genes thus far discovered. Now a multidisciplinary effort involving 15 scientists from ...
Cell & Microbiology
Sep 23, 2013
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It's not just in toothpaste and mouthwash—fluoride is found in just about everything from rocks and water to the soil and the sea. It is the 13th most abundant element in the Earth's crust, and it's extremely toxic to single-celled ...
Cell & Microbiology
Sep 19, 2013
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(Phys.org) —Growing concern about bacterial resistance to existing antibiotics has created strong interest in new approaches for therapeutics able to battle infections. The work of an international team of researchers that ...
Cell & Microbiology
Sep 9, 2013
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From the lab to the computer: Scientists from the University of Freiburg have developed a computer program to predict the functions of bacterial gene regulators. This online software which is called CopraRNA could save researchers ...
Cell & Microbiology
Aug 30, 2013
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