News tagged with dna nucleotides
RNA reactor could have served as a precursor of life
(PhysOrg.com) -- Nobody knows quite how life originated on Earth, but most scientists agree that living cells did not abruptly appear from nonliving cells in a single step. Instead, there were probably a series ...
Jul 11, 2011 |
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Scientists discover new genetic sub-code
In a multidisciplinary approach, Professor Yves Barral, from the Biology Department at ETH Zurich and the computer scientists Dr. Gina Cannarozzi and Professor Gaston Gonnet, from the Computer Science Department of ETH Zurich ...
Apr 16, 2010 |
4.9 / 5 (17) |
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Powerful genome barcoding system reveals large-scale variation in human DNA
(PhysOrg.com) -- Genetic abnormalities are most often discussed in terms of differences so miniscule they are actually called "snips" — changes in a single unit along the 3 billion that make up the entire string of human ...
May 31, 2010 |
4.9 / 5 (16) |
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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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Tiny reader makes fast, cheap DNA sequencing feasible
Researchers have devised a nanoscale sensor to electronically read the sequence of a single DNA molecule, a technique that is fast and inexpensive and could make DNA sequencing widely available.
Nanotechnology / Bio & Medicine
Mar 26, 2012 |
5 / 5 (11) |
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Backtracking on DNA
(PhysOrg.com) -- Accuracy is essential for life, so in converting the information stored in DNA into a form in which it can be used, a high level of precision is required. Dr Tanniemola Liverpool from the ...
Jun 23, 2009 |
4.6 / 5 (9) |
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Critics cast doubt on recent longevity gene study findings
(PhysOrg.com) -- A recent study of centenarians (reported in PhysOrg on July 1st) that linked a number of gene variants to longevity has now been questioned by other scientists, who suggest a DNA chip known as 610-Quad, used in ...
Jul 09, 2010 |
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Autopsy study links prostate cancer to single rogue cell
that's all it takes to begin a series of events that lead to metastatic cancer. Now, Johns Hopkins experts have tracked how the cancer process began in 33 men with prostate cancer who died of the disease. Culling information ...
Apr 17, 2009 |
4.9 / 5 (8) |
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Two-step technique makes graphene suitable for organic chemistry
The future brightened for organic chemistry when researchers at Rice University found a highly controllable way to attach organic molecules to pristine graphene, making the miracle material suitable for a ...
Nanotechnology / Nanomaterials
Nov 29, 2011 |
4.8 / 5 (8) |
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lobSTR algorithm rolls DNA fingerprinting into 21st century
As any crime show buff can tell you, DNA evidence identifies a victim's remains, fingers the guilty, and sets the innocent free. But in reality, the processing of forensic DNA evidence takes much longer than a 60-minute primetime ...
Apr 27, 2012 |
4.7 / 5 (7) |
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DNA study confirms geographical origin of Jews
New research has found Jews share a genetic bond with Cypriots and Druze and confirms the Jewish diaspora maintained a strong DNA continuity despite its long separation from the Middle East, scientists said ...
Jun 09, 2010 |
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Biologists uncover a novel cellular proofreading mechanism
(PhysOrg.com) -- To make proteins, cells assemble long chains of amino acids, based on genetic instructions from DNA. That construction takes place in a tiny cellular structure called a ribosome, to which amino acids are ...
Nov 11, 2011 |
4.8 / 5 (5) |
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Scientists Build Nanostructures out of Single DNA Strands
(PhysOrg.com) -- With its unique double-helical structure, DNA has the ability to be used as a programmable building material to construct designer nanoscale architectures. Complex DNA architectures could ...
Nanotechnology / Bio & Medicine
Sep 08, 2009 |
5 / 5 (4) |
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Just like old times: Generating RNA molecules in water
A key question in the origin of biological molecules like RNA and DNA is how they first came together billions of years ago from simple precursors. Now, in a study appearing in this week's Journal of Biological Chemistry, resear ...
Nov 20, 2009 |
4 / 5 (3) |
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Versatility of stem cells controlled by alliances, competitions of proteins
Like people with a big choice to make, stem cells have a process to "decide" whether to transform into a specific cell type or to stay flexible, a state that biologists call "pluripotency." Using a technology he invented, ...
Apr 27, 2011 |
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