The molecular machines that copy DNA in a living cell are amazingly fast and accurate at pairing up the correct bases—G with C and A with T—into each new double helix.
Biochemistry
Mar 11, 2015
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All living organisms, from bacteria to humans, rely on proteins to perform their vital functions. How these proteins accomplish their tasks depends on their structure. Researchers from the Paul Scherrer Institute have now ...
General Physics
Dec 16, 2014
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The proteins that drive DNA replication—the force behind cellular growth and reproduction—are some of the most complex machines on Earth. The multistep replication process involves hundreds of atomic-scale moving parts ...
Cell & Microbiology
Oct 15, 2014
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(Phys.org) —Scientists at The University of Manchester have generated a new star-shaped molecule made up of interlocking rings, which is the most complex of its kind ever created.
Materials Science
Sep 22, 2014
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Ludwig Maximilian University of Munich researchers have discovered a further function of the base-pairing that holds the two strands of the DNA double helix together: it plays a crucial role in protecting the DNA from the ...
Biochemistry
Sep 19, 2014
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DNA—the carrier of genetic information—is constantly threatened by damage originating from exogenous and endogenous sources. Very special DNA lesions are DNA-protein crosslinks - proteins covalently linked to DNA. So ...
Cell & Microbiology
Jul 3, 2014
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Every high school biology student knows the structure of DNA is a double helix, but after DNA is converted into RNA, parts of RNA also commonly fold into the same spiral staircase shape.
Cell & Microbiology
Jul 3, 2014
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Environmental influences such as ionizing radiation, intense heat or various chemical substances damage the DNA constantly. Only thanks to efficient repair systems can mutations – changes in the DNA – largely be prevented. ...
Cell & Microbiology
May 27, 2014
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Researchers at the National Physical Laboratory (NPL) and the London Centre for Nanotechnology (LCN) have determined the structure of DNA from measurements on a single molecule using atomic force microscopy (AFM), and found ...
Bio & Medicine
May 15, 2014
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(Phys.org) —Using principles of energy transfer more commonly applied to designing solar cells, scientists at the U.S. Department of Energy's Brookhaven National Laboratory have developed a new highly sensitive way to detect ...
Materials Science
Apr 29, 2014
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