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Latest RNA world hypothesis Stories

RNA-world Hypothesis Under The Microscope
2012-10-15 05:27:46

redOrbit Staff & Wire Reports - Your Universe Online A chemical model developed by a team of US researchers shows how the Earth's first life forms may have packaged the genetic coding material known as ribonucleic acid (RNA), demonstrating one of the earliest steps that could have paved the way for the formation of cellular life some four billion years ago. The Penn State University scientists behind the project used a type of macromolecule called polymers to create primitive...

Researchers Create Synthetic DNA/RNA That Can Evolve
2012-04-20 07:04:05

Researchers have created artificial genetic material known as Xenonucleic acids, or XNAs, that can store information and evolve over generations in a comparable way to DNA. The research, reported Friday in the journal Science, has implications for the fields of molecular medicine and biotechnology, and sheds new light on how molecules first replicated and assembled into life billions of years ago. Living systems owe their existence to the information-carrying molecules DNA and...

2012-02-15 23:07:55

Computer engineers may have just provided the medical community a new way of figuring out exactly how one of the three building blocks of life forms and functions. University of Central Florida Engineering Assistant Professor Shaojie Zhang used a complex computer program to analyze RNA motifs — the subunits that make up RNA (ribonucleic acid). RNA is one of three building blocks of life along with DNA and proteins. Knowing how all three building blocks work together and how they...

2012-01-09 13:15:50

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 faithfully reproducing themselves as well as generating the myriad proteins vital to living systems. Yet according to John Chaput, a researcher at the Center for Evolutionary Medicine and Informatics, at Arizona State University´s Biodesign Institute®, it may not always have been so. Chaput...

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2011-08-11 06:16:06

UC Merced professor coauthors paper published in Nature Chemistry, offering insight into how naturally occurring RNA precursors may have formed on Earth billions of years ago 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 University of California, Merced. The study, "A Route to Enantiopure RNA Precursors from Nearly...

2011-04-25 12:40:31

Technique offers detailed view of how RNA levels change RNA plays a critical role in directing the creation of proteins, but there is more to the life of an RNA molecule than simply carrying DNA's message. One can imagine that an RNA molecule is born, matures, and eventually, meets its demise. Researchers at the Broad have developed an approach that offers many windows into the lifecycle of these essential molecules and will enable other scientists to investigate what happens when something...

2011-01-19 23:20:54

Scientists are reporting an advance in overcoming a major barrier to the use of the genetic material RNA in nanotechnology "” the field that involves building machines thousands of times smaller than the width of a human hair and now is dominated by its cousin, DNA. Their findings, which could speed the use of RNA nanotechnology for treating disease, appear in the monthly journal ACS Nano. Peixuan Guo and colleagues point out that DNA, the double-stranded genetic blueprint of life, and...

2010-10-12 13:43:59

European Science Foundation reports on the future of ribonucleic acid research A Europe-wide network of labs focusing on RNA research is needed to make the most of RNA's high potential for treating a wide range of diseases. The recommendation for this virtual research institute comes from a panel of biologists at the European Science Foundation in a report published today, 'RNA World: a new frontier in biomedical research'. Ten years on from the human genome project, RNA (ribonucleic acid)...

2010-08-12 15:49:54

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. To the surprise of researchers, this RNA complex seems to play a critical role in the ability of the organism to infect human cells, a job carried out almost exclusively by proteins produced from DNA's instruction manual. "What these cells are doing is using ancient RNA technology...

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2010-02-22 16:30:41

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 step toward understanding "the very origin of Earthly life," the lead researcher contends. The smallest RNA enzyme ever known to perform a cellular chemical reaction is described in a paper published this week in the Proceedings of the National Academy of Sciences. The paper was written...


Word of the Day
cock-a-hoop
  • Exultant; jubilant; triumphant; on the high horse.
  • Tipsy; slightly intoxicated.
This word may come from the phrase 'to set cock on hoop,' or 'to drink festively.' Its origin otherwise is unclear. A theory, according to the Word Detective, is that it's a 'transliteration of the French phrase 'coq a huppe,' meaning a rooster displaying its crest ('huppe') in a pose of proud defiance.' Therefore, 'cock-a-hoop' would 'liken a drunken man to a boastful and aggressive rooster.'
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