Authors: George Rajna
Some people appear to be considerably younger or older than their chronological age. Genetic signatures that may help explain this have been discovered by scientists at the Salk Institute.  Plant scientists at the Universities of Birmingham and Nottingham have unravelled a mechanism that enables flowering plants to sense and 'remember' changes in their environment.  The exocyst is a protein complex essential for life, that is comprised of eight subunits and is a crucial component in vesicle trafficking.  Researchers from the University of Chicago have developed a high-throughput RNA sequencing strategy to study the activity of the gut microbiome.  Today a large international consortium of researchers published a complex but important study looking at how DNA works in animals.  Asymmetry plays a major role in biology at every scale: think of DNA spirals, the fact that the human heart is positioned on the left, our preference to use our left or right hand ...  Scientists reveal how a 'molecular machine' in bacterial cells prevents fatal DNA twisting, which could be crucial in the development of new antibiotic treatments.  In new research, Hao Yan of Arizona State University and his colleagues describe an innovative DNA HYPERLINK "https://phys.org/tags/walker/" walker, capable of rapidly traversing a prepared track.  Just like any long polymer chain, DNA tends to form knots. Using technology that allows them to stretch DNA molecules and image the behavior of these knots, MIT researchers have discovered, for the first time, the factors that determine whether a knot moves along the strand or "jams" in place.  Researchers at Delft University of Technology, in collaboration with colleagues at the Autonomous University of Madrid, have created an artificial DNA blueprint for the replication of DNA in a cell-like structure. 
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[v1] 2018-12-27 06:30:29
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