Living organisms need to sense the amount of energy that is available to them and regulate the activity of their genes accordingly. Scientists have made the unexpected finding that a histone protein, which wraps DNA into tight bundles and regulates gene activity, can bind a small molecule produced in our cells. This novel finding in itself was a breakthrough for researchers at the European Molecular Biology Laboratory (EMBL), but what made it more interesting was which specific molecule it binds – one from a pathway known to be linked to obesity and aging.
The EMBL researchers studied a pathway involving an enzyme (Sir2), whose activity is regulated by the availability of nutrients, and an energy molecule (NAD). This pathway, and the enzyme Sir2 in particular, has been heavily investigated because nutrients are known to regulate Sir2s activity on genes.
“Each enzymes job is to turn starting materials into final products. These usually have important functions, but while several scientists have studied the enzyme Sir2, no one has identified a role for one of the final products of the reaction in humans,” says EMBL Group Leader Andreas Ladurner.
Trista Dawson | alfa
Microscope measures muscle weakness
16.11.2018 | Friedrich-Alexander-Universität Erlangen-Nürnberg
Good preparation is half the digestion
16.11.2018 | Max-Planck-Institut für Stoffwechselforschung
Researchers at the University of New Hampshire have captured a difficult-to-view singular event involving "magnetic reconnection"--the process by which sparse particles and energy around Earth collide producing a quick but mighty explosion--in the Earth's magnetotail, the magnetic environment that trails behind the planet.
Magnetic reconnection has remained a bit of a mystery to scientists. They know it exists and have documented the effects that the energy explosions can...
Biochips have been developed at TU Wien (Vienna), on which tissue can be produced and examined. This allows supplying the tissue with different substances in a very controlled way.
Cultivating human cells in the Petri dish is not a big challenge today. Producing artificial tissue, however, permeated by fine blood vessels, is a much more...
Faster and secure data communication: This is the goal of a new joint project involving physicists from the University of Würzburg. The German Federal Ministry of Education and Research funds the project with 14.8 million euro.
In our digital world data security and secure communication are becoming more and more important. Quantum communication is a promising approach to achieve...
On Saturday, 10 November 2018, the research icebreaker Polarstern will leave its homeport of Bremerhaven, bound for Cape Town, South Africa.
When choosing materials to make something, trade-offs need to be made between a host of properties, such as thickness, stiffness and weight. Depending on the application in question, finding just the right balance is the difference between success and failure
Now, a team of Penn Engineers has demonstrated a new material they call "nanocardboard," an ultrathin equivalent of corrugated paper cardboard. A square...
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16.11.2018 | Health and Medicine
16.11.2018 | Life Sciences
16.11.2018 | Life Sciences