HOME >> BIOLOGY >> NEWS
Basic RNA enzyme research promises single-molecule biosensors

ANN ARBOR, Mich.---Research aimed at teasing apart the workings of RNA enzymes eventually may lead to ways of monitoring fat metabolism and might even assist in the search for signs of life on Mars, according to University of Michigan researcher Nils Walter.

His latest work was published online in the Proceedings of the National Academy of Sciences June 24.

Walter and associates at U-M and colleague Xiaowei Zhuang and associates at Harvard University, use techniques that allow them to study single molecules of RNA enzymes, also known as ribozymes. Like the more familiar protein enzymes, RNA enzymes accelerate chemical reactions inside cells. Researchers want to learn how changes in ribozyme molecules affect their activity, both to better understand how evolution has shaped ribozymes to carry out their duties and to find ways of manipulating them for useful purposes.

In the recent research, Walter's group combined a technique called single-molecule fluorescence resonance energy transfer (FRET) with mathematical simulations to study a ribozyme involved in the replication of a tobacco-infecting virus. Just as a protein enzyme is not a static structure, a ribozyme also changes shape, cycling back and forth between its compact, catalytically active form and its inactive, extended form. Single-molecule FRET allowed the researchers to directly observe and measure how quickly the ribozyme switched forms and how these rates changed when various parts of the molecule were altered.

With the addition of mathematical simulations, the researchers also could investigate how changing parts of the ribozyme molecule affected its ability to catalyze chemical reactions. They were surprised to find that modifications they made anywhere on the molecule---even far from the site where the chemical reaction occurs---affected the rate of catalysis.

That's much like what is known to happen in protein enzymes, but until now there was no evidence that
'"/>

Contact: Nancy Ross Flanigan
rossflan@umich.edu
734-647-1853
University of Michigan
29-Jun-2004


Page: 1 2 3

Related biology news :

1. Basic motion measuring technology may be alternative to more expensive testing procedures
2. Basic Research and Higher Education Program Conference breaks new ground
3. Clay M. Armstrong, MD, wins 1999 Albert Lasker Basic Medical Research Award
4. Cystic Fibrosis Conference Will Showcase Latest From Clinical Care To Basic Science
5. Butterfly Wings, Beetle Horns Teach Biologists Basic Lesson In Developments Laws
6. Overfeeding Normal Infant Rats Affects Three Generations: Permanently Changes Basic Metabolism, Interferes With Reproduction
7. Ten Years of Progress For Superfund Basic Research Program
8. Anthrax enzyme images reveal secrets of antibiotic resistance, suggest new drug design
9. First glimpse of DNA binding to viral enzyme
10. Two enzymes key to calorie-burning, Brown research shows
11. Argonne scientists determine structure of staph, anthrax enzyme

Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Basic RNA enzyme research promises single molecule biosensors

(Date:11/18/2014)... 2014   EyeLock Inc. , a market ... MorphoTrust USA (Safran), a leading U.S. provider ... strategic partnership to offer comprehensive biometric identity solutions ... airport screening and financial services markets. ... consumers through a nationwide network of 1,100 IdentoGO® ...
(Date:11/10/2014)... U.S. store shelves in early 2010, and people have ... packets can be tossed into a washing machine without ... The convenience, though, has come with risks for young ... Children,s Hospital found that from 2012 through 2013, U.S. ... than 6 years of age swallowing, inhaling, or otherwise ...
(Date:11/6/2014)... paper from a team of Florida State University biologists ... could adapt to and survive environmental swings such as ... latest issue of the journal The Plant Cell ... DNA and proteins) is organized in a cell and ... are turned on and others are turned off. , ...
Breaking Biology News(10 mins):EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 2EyeLock, MorphoTrust Form Strategic Partnership to Pursue Commercial Enterprise Deployments 3Study finds laundry detergent pods, serious poisoning risk for children 2Maize analysis yields whole new world of genetic science 2
(Date:11/21/2014)... Offering a complete line of laboratory ... promotion . The Sartorius Entris Balance is the perfect ... and easy-to-maintain balance entry level balance. , The Entris ... to help customer’s bridge the gap between a basic ... very durable. Sartorius is the second biggest balance manufacturer ...
(Date:11/21/2014)... Alto, Calif. (PRWEB) November 20, 2014 ... a nonprofit, public policy research organization representing leading ... pharmaceutical firms, and PwC US today ... states in life sciences industry growth. The trend ... 2013. The 2015 California Biomedical Industry Report ...
(Date:11/21/2014)... York, NY (PRWEB) November 20, 2014 ... is now available as an open access journal featuring ... with infrared fluorescent proteins to preserve photoresponsiveness in the ... Two-color fluorescent in situ hybridization using chromogenic substrates ... chips for DNA, RNA, and protein electrophoresis , ...
(Date:11/21/2014)... Why did Stephen Hawking become so famous? ... recognizable? Why have they become icons to rival film ... Ratcliffe seeks out the answers to those questions, and ... with science. In " Stephen Hawking Smoked My Socks ... Ratcliffe puts it plainly: , “It is profoundly ...
Breaking Biology Technology:Pipette.com Announces an Extension on the Sartorius Entris Balance Promotion to the End of 2014 2California Healthcare Institute and PwC Report Boom in California’s Biomedical Industry 2California Healthcare Institute and PwC Report Boom in California’s Biomedical Industry 3California Healthcare Institute and PwC Report Boom in California’s Biomedical Industry 4BioTechniques: The International Journal of Life Science Methods Announces the Publication of the November 2014 Issue—Available in Print and Online 2BioTechniques: The International Journal of Life Science Methods Announces the Publication of the November 2014 Issue—Available in Print and Online 3“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 2“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 3“Stephen Hawking Smoked My Socks” Sparks Controversy in Science World 4
Cached News: