A mechanical engineer has developed a new, high-throughput method for sorting cells capable of separating 10 billion bacterial cells in 30 minutes. The finding has already proven useful for studying bacterial cells and microalgae, and could one day have direct applications for biomedical research and environmental science - basically any field in which a large quantity of microbial samples need to be processed.
Scientists present a detailed new model that for the first time proposes how plant cells precisely position a 'dynamic and complex' structure called a phragmoplast at the cell center during every division and how it directs cytokinesis.
Scientists from both campuses of The Scripps Research Institute (TSRI) have been awarded a total of $7.9 million from the Defense Advanced Research Projects Agency (DARPA). The two teams will build what is, in essence, an artificial immune system, comprising vast 'libraries' of different types of molecules from which will emerge individual compounds to detect or neutralize an array of biological and chemical threats.
When the body forms new tissues during the healing process, cells must be able to communicate with each other. For years, scientists believed this communication happened primarily through chemical signaling. Now researchers have found that another dimension - mechanical communication - is equally if not more crucial.
Scientists try to understand how networks of genes work together to create specific patterns like stripes. They have gone beyond studying individual networks and have created computational and synthetic mechanisms for a whole 'design space' of networks in the bacteria Escherichia coli.
Scientists have established an easy to use, low-cost, rapid, and high sensitivity semiconductor-imaging based medical diagnostic biosensing system for analyzing blood and urine for early diagnosis of ailments including diabetes and Alzheimer's disease.
Researchers have successfully identified the 'molecular accelerator' that activates the peroxisomal processes. To their surprise, it turned out to be an old acquaintance: a certain module of the familiar protein Pex22p, which has hitherto always been considered an anchor protein.
Crystals of membrane proteins and protein complexes often diffract to low resolution owing to their intrinsic molecular flexibility, heterogeneity or the mosaic spread of micro-domains. At low resolution, the building and refinement of atomic models is a more challenging task. The deformable elastic network refinement method developed previously has been instrumental in the determination of several structures at low resolution. Here, DEN refinement is reviewed.