News tagged with transfer rnas
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 |
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In next-gen DNA sequence, new answers to a rare and devastating disease
In Leigh syndrome, infants are born apparently healthy only to develop movement and breathing disorders that worsen over time, often leading to death by the age of 3. The problem is that the mitochondria responsible for powering ...
Sep 06, 2011 |
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Software helps synthetic biologists customize protein production
A software program developed by a Penn State synthetic biologist could provide biotechnology companies with genetic plans to help them turn bacteria into molecular factories, capable of producing everything from biofuels ...
Jul 21, 2011 |
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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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Working in concert
As cells go about the process of building new proteins, each amino acid gets delivered individually to the protein-synthesizing machinery of the ribosome by a specialized transfer RNA (tRNA) molecule. This ...
Dec 06, 2010 |
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Researchers discover potential genetic target for heart disease
Researchers at the University of Cincinnati (UC) have found a potential genetic target for heart disease, which could lead to therapies to prevent the development of the nation's No. 1 killer in its initial stages.
Nov 17, 2010 |
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Molecular fossil: Crystal structure shows how RNA, one of biology's oldest catalysts, is made
(PhysOrg.com) -- In today's world of sophisticated organisms proteins are the stars. They are the indispensible catalytic workhorses, carrying out the processes essential to life. But long, long ago ribonucleic ...
Nov 14, 2010 |
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The pre-history of life: Elegantly simple organizing principles seen in ribosomes
With few exceptions, all known forms of life on our planet rely on the same genetic code to specify the amino acid composition of proteins. Although different hypotheses abound, just how individual amino acids ...
Apr 12, 2010 |
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Spying on a cellular director in the cutting room
Like a film director cutting out extraneous footage to create a blockbuster, the cellular machine called the spliceosome snips out unwanted stretches of genetic material and joins the remaining pieces to fashion a template ...
Mar 21, 2010 |
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Researchers uncover chemical basis for extra 'quality control' in protein production
December 9, 2009 -Even small errors made by cells during protein production can have profound disease effects, and nature has developed ways to uncover these mistakes and correct them. Though in the case of one essential ...
Dec 09, 2009 |
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Cells defend themselves from viruses, bacteria with armor of protein errors
When cells are confronted with an invading virus or bacteria or exposed to an irritating chemical, they protect themselves by going off their DNA recipe and inserting the wrong amino acid into new proteins to defend them ...
Nov 25, 2009 |
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Secrets of a Life-Giving Amino Acid Revealed
(PhysOrg.com) -- Selenium is a trace element crucial to life -- too little or too much of it is fatal. In the July 17 issue of the journal Science, researchers at Yale University and University of Illinois at Chi ...
Jul 16, 2009 |
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Genetic switch potential key to new class of antibiotics
Researchers have determined the structure of a key genetic mechanism at work in bacteria, including some that are deadly to humans, in an important step toward the design of a new class of antibiotics, according to an accelerated ...
Apr 17, 2009 |
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