News tagged with rna molecules
Related topics: messenger rna , protein , cells , genes , gene expression
Simpler times: Did an earlier genetic molecule predate DNA and RNA?
(PhysOrg.com) -- In the chemistry of the living world, a pair of nucleic acids—DNA and RNA—reign supreme. As carrier molecules of the genetic code, they provide all organisms with a mechanism for ...
Jan 09, 2012 |
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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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Chemists see first building blocks to life on Earth
Scientists at The University of Manchester have developed an experiment that sheds new and fascinating light on how life on Earth might have begun.
May 13, 2009 |
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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 create tiny RNA molecule with big implications for life's origins
An extremely small RNA molecule created by a University of Colorado at Boulder team can catalyze a key reaction needed to synthesize proteins, the building blocks of life. The findings could be a substantial ...
Feb 22, 2010 |
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Human cells can copy not only DNA, but also RNA
Single-molecule sequencing technology has detected and quantified novel small RNAs in human cells that represent entirely new classes of the gene-translating molecules, confirming a long-held but unproven hypothesis that ...
Aug 10, 2010 |
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New method for generating human stem cells is remarkably efficient
The ability to efficiently generate patient-specific stem cells from differentiated cells and then reliably direct them to form specialized cells (like neurons or muscle) has tremendous therapeutic potential for replacing ...
Sep 30, 2010 |
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Study builds on plausible scenario for origin of life on Earth
A relatively simple combination of naturally occurring sugars and amino acids offers a plausible route to the building blocks of life, according to a paper published in Nature Chemistry co-authored by a professor at the Un ...
Aug 09, 2011 |
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Dangerous bacterium hosts genetic remnant of life's distant past
Within a dangerous stomach bacterium, Yale University researchers have discovered an ancient but functioning genetic remnant from a time before DNA existed, they report in the August 13 issue of the journal Science.
Aug 12, 2010 |
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A mystery solved: How genes are selectively silenced
Cells read only those genes which are needed at a given moment, while the others are chemically labeled and, thus, selectively turned off. Scientists at the German Cancer Research Center have now been the first to discover ...
Oct 18, 2010 |
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Scientists get glimpse of how the 'code' of life may have emerged
A portion of the "code" of life has been unraveled by a UC Santa Barbara graduate student from the town of Jojutla, Mexico.
Mar 23, 2011 |
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These cancer cells will self-destruct in 5...4...
Cancer is a difficult disease to treat because it's a personal disease. Each case is unique and based on a combination of environmental and genetic factors. Conventional chemotherapy employs treatment with ...
Sep 06, 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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Newly explored bacteria reveal some huge RNA surprises
(PhysOrg.com) -- Yale University researchers have found very large RNA structures within previously unstudied bacteria that appear crucial to basic biological functions such as helping viruses infect cells ...
Dec 02, 2009 |
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Molecular alternatives to DNA, RNA offer new insight into life's origins
Living systems owe their existence to a pair of information-carrying molecules: DNA and RNA. These fundamental chemical forms possess two features essential for life: they display heredity—meaning they can encode and ...
Apr 19, 2012 |
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