Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Rhythmic genomics -- the yeast metronome and the walk of life

09.04.2009
New genome sequence information from the humble baker's yeast has revealed surprising variation in a set of genes that can be thought of as nature's oldest clock. In a paper published in Genome Research scientists show how ribosomal RNA genes that are essential to all Earth's organisms provide insight into how genomes maintain their integrity on their evolutionary journey.

Ribosomal RNA sequence changes have been ticking away like clockwork for over 3 billion years, maybe even pre-dating the origin of the DNA world itself. However, even the slightest changes in sequence of these genes can be fatal. It is vital to conserve the important genetic 'cogs' to make sure cells function correctly. However, significant changes do occur, contrary to expectation, and yet the yeast somehow still survives.

Furthermore, when two yeasts hybridise the clocks appear to re-set, apparently overwriting each others' rhythm and eliminating unwanted variations on the theme. This provides clues as to how key motifs are conserved and allows us to track the evolutionary history of hybrids.

Steve James, lead researcher at the Institute of Food Research (IFR), said "I have sequenced these genes to selectively identify yeast species for over 15 years and had no idea they would turn out to be so variable."

Rob Davey, computational biologist at the National Collection of Yeast Cultures (NCYC), said "we can use new computer techniques to model the changes mathematically and really get to grips with what orchestrates the variation in these important cell housekeepers."

Ian Roberts, Curator of NCYC, said "Yeasts are everywhere around us in nature and industry. This extra level of detail allows us to resolve important differences between yeasts and gain maximum benefits from their use in food, drink and healthcare."

This work was carried out in collaboration with the Wellcome Trust Sanger Institute and the Massachusetts Institute of Technology. The IFR is an institute of the Biotechnology and Biological Sciences Research Council (BBSRC).

Contacts:

IFR Press Office
Zoe Dunford, Tel: 01603 255111, email: zoe.dunford@bbsrc.ac.uk
Andrew Chapple, Tel: 01603 251490, email: andrew.chapple@bbsrc.ac.uk

Andrew Chapple | EurekAlert!
Further information:
http://www.bbsrc.ac.uk
http://www.ncyc.co.uk
http://www.ifr.ac.uk

More articles from Life Sciences:

nachricht Scientists uncover the role of a protein in production & survival of myelin-forming cells
19.07.2018 | Advanced Science Research Center, GC/CUNY

nachricht NYSCF researchers develop novel bioengineering technique for personalized bone grafts
18.07.2018 | New York Stem Cell Foundation

All articles from Life Sciences >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: First evidence on the source of extragalactic particles

For the first time ever, scientists have determined the cosmic origin of highest-energy neutrinos. A research group led by IceCube scientist Elisa Resconi, spokesperson of the Collaborative Research Center SFB1258 at the Technical University of Munich (TUM), provides an important piece of evidence that the particles detected by the IceCube neutrino telescope at the South Pole originate from a galaxy four billion light-years away from Earth.

To rule out other origins with certainty, the team led by neutrino physicist Elisa Resconi from the Technical University of Munich and multi-wavelength...

Im Focus: Magnetic vortices: Two independent magnetic skyrmion phases discovered in a single material

For the first time a team of researchers have discovered two different phases of magnetic skyrmions in a single material. Physicists of the Technical Universities of Munich and Dresden and the University of Cologne can now better study and understand the properties of these magnetic structures, which are important for both basic research and applications.

Whirlpools are an everyday experience in a bath tub: When the water is drained a circular vortex is formed. Typically, such whirls are rather stable. Similar...

Im Focus: Breaking the bond: To take part or not?

Physicists working with Roland Wester at the University of Innsbruck have investigated if and how chemical reactions can be influenced by targeted vibrational excitation of the reactants. They were able to demonstrate that excitation with a laser beam does not affect the efficiency of a chemical exchange reaction and that the excited molecular group acts only as a spectator in the reaction.

A frequently used reaction in organic chemistry is nucleophilic substitution. It plays, for example, an important role in in the synthesis of new chemical...

Im Focus: New 2D Spectroscopy Methods

Optical spectroscopy allows investigating the energy structure and dynamic properties of complex quantum systems. Researchers from the University of Würzburg present two new approaches of coherent two-dimensional spectroscopy.

"Put an excitation into the system and observe how it evolves." According to physicist Professor Tobias Brixner, this is the credo of optical spectroscopy....

Im Focus: Chemical reactions in the light of ultrashort X-ray pulses from free-electron lasers

Ultra-short, high-intensity X-ray flashes open the door to the foundations of chemical reactions. Free-electron lasers generate these kinds of pulses, but there is a catch: the pulses vary in duration and energy. An international research team has now presented a solution: Using a ring of 16 detectors and a circularly polarized laser beam, they can determine both factors with attosecond accuracy.

Free-electron lasers (FELs) generate extremely short and intense X-ray flashes. Researchers can use these flashes to resolve structures with diameters on the...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

VideoLinks
Industry & Economy
Event News

Leading experts in Diabetes, Metabolism and Biomedical Engineering discuss Precision Medicine

13.07.2018 | Event News

Conference on Laser Polishing – LaP: Fine Tuning for Surfaces

12.07.2018 | Event News

11th European Wood-based Panel Symposium 2018: Meeting point for the wood-based materials industry

03.07.2018 | Event News

 
Latest News

Global study of world's beaches shows threat to protected areas

19.07.2018 | Earth Sciences

New creepy, crawly search and rescue robot developed at Ben-Gurion U

19.07.2018 | Power and Electrical Engineering

Metal too 'gummy' to cut? Draw on it with a Sharpie or glue stick, science says

19.07.2018 | Materials Sciences

VideoLinks
Science & Research
Overview of more VideoLinks >>>