News tagged with dna polymerase
Correcting a trick of the light brings molecules into view
Conventional wisdom holds that optical microscopy can't be used to "see" something as small as an individual molecule. But as it is wont, clever science has once again overturned conventional wisdom. Secretary ...
Jul 14, 2010 |
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Scientists tease DNA from eggshell of extinct birds
(PhysOrg.com) -- In a world first, scientists in Australia announced on Wednesday they had extracted DNA from the fossilised eggshells of extinct birds, including iconic giants such as the moa and elephant ...
Mar 09, 2010 |
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Physics of gene transcription unveiled
(PhysOrg.com) -- A research team has made precise measurements of where and how RNA polymerase encounters obstacles while it reads nucleosomal DNA.
May 14, 2010 |
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Chemists Discover How Cells Create Stability During Critical DNA-to-RNA Information Transfers
(PhysOrg.com) -- A pair of University of Massachusetts Amherst chemists believe they have for the first time explained how the main players in transcription -- RNA polymerase, RNA (red in illustration) and ...
Dec 29, 2009 |
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Scientists crash test DNA's replication machinery
(PhysOrg.com) -- Important molecular machines routinely crash into one another while plying their trades on DNA. New research shows that the enzymes that copy DNA before cell division, called replisomes, are the kings of ...
Feb 10, 2010 |
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Scientists observe single gene activity in living cells
Researchers at Albert Einstein College of Medicine of Yeshiva University have for the first time observed the activity of a single gene in living cells. In an unprecedented study, published in the April 22 online edition ...
Apr 21, 2011 |
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Study uncovers how DNA unfolds for transcription
(PhysOrg.com) -- The human genome contains some 3 billion base pairs that are tightly compacted into the nucleus of each cell. If a DNA strand were the thickness of a human hair, the entire human genome would ...
Jan 17, 2012 |
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A Real Dracula Story
Research, discovery and publishing in a prestigious journal are not as easy as 1-2-3. However, an outstanding mentor and a well-equipped lab made this feat possible for doctoral student Fei Jiang.
Aug 27, 2009 |
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'Sloppier copier' surprisingly efficient
The "sloppier copier" discovered by USC biologists is also the best sixth man in the DNA repair game, an article in the journal Nature shows.
Jul 15, 2009 |
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A better test to detect DNA for diagnosing diease, investigating crimes
Researchers in Singapore are reporting development of a new electronic sensor that shows promise as a faster, less expensive, and more practical alternative than tests now used to detect DNA. Such tests are ...
Aug 26, 2009 |
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Want to silence a gene? Pull here
(PhysOrg.com) -- Simply stretching DNA can silence a gene, scientists at the UA have discovered. The finding could point to a previously unknown gene control mechanism.
Mar 21, 2011 |
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DNA repair changes with the flip of a switch
(PhysOrg.com) -- The DNA blueprint in each human cell undergoes about 100,000 damaging events every day. Because a cell's survival depends on the repair of these damaged molecules, each injury signals a team ...
Aug 26, 2010 |
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Researchers Reveal Structure of Key Genetic Proofreading Protein
(PhysOrg.com) -- Nature might abhor a vacuum, but it loves a backup plan. In living organisms, physiological systems are kept under tight control by hierarchies of organic safety catches and emergency releases, ...
Jun 05, 2009 |
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Cells can read damaged DNA without missing a beat
Scientists have shown that cells' DNA-reading machinery can skim through certain kinds of damaged DNA without skipping any letters in the genetic "text." The studies, performed in bacteria, suggest a new mechanism that can ...
Feb 09, 2010 |
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The 3-dimensional transcription film
Gene expression takes place in two stages: the transcription of DNA to RNA by an enzyme called RNA polymerase, followed by the translation of this RNA into proteins, whose behaviour affects the characteristics of each individual.
Jun 17, 2010 |
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