HOME >> BIOLOGY >> NEWS
Battle between bubbles might have started evolution

Howard Hughes Medical Institute researchers are proposing that the first battle for survival-of-the-fittest might have played out as a simple physical duel between fatty bubbles stuffed with genetic material. The scientists suggest that genetic material that replicated quickly may have been all the bubbles needed to edge out their competitors and begin evolving into more sophisticated cells.

This possibility, revealed by laboratory experiments with artificial fatty acid sacs, is in sharp contrast to a current theory of the earliest evolution of cells, which suggests that cellular evolution was driven by primordial genetic machinery that actively synthesized cell membranes or otherwise influenced cell stability or division.

The researchers, led by Howard Hughes Medical Institute investigator Jack W. Szostak, published their findings in the September 3, 2004, issue of the journal Science. Szostak and first author Irene Chen, both from Massachusetts General Hospital and Harvard Medical School, collaborated on the studies with Richard Roberts of the California Institute of Technology.

Cells are basically sacs encapsulated by bilayered membranes of fatty acids and other lipids, plus proteins. A central question in evolution is how simple versions of these cells, or vesicles, first arose and began the process of competition that drove the evolution of life.

"Most of the previous thinking about how cells grew and evolved was based on the idea of the initial evolution of structural RNAs or ribozymes -- enzymes that could synthesize membrane molecules," said Szostak. The ribozymes might have made more membrane material while the structural RNAs might have formed a cytoskeleton that influenced stability, shape, growth or division, he said.

However, Szostak and his colleagues theorized that a far simpler physical process might explain why cells would compete with one another for the materials necessary to expand their size.

"We propos
'"/>

Contact: Jennifer Michalowski
michalow@hhmi.org
301-215-8576
Howard Hughes Medical Institute
2-Sep-2004


Page: 1 2 3

Related biology news :

1. AAAS hosts Battle of the Brains to choose area student for international competition
2. Battle of the DNA bulge may help thwart cancer
3. Battle lasers
4. System failure to blame for Walkerton, North Battleford outbreaks, says U of T study
5. Researchers working to devise plan for Palo Alto Battlefield Restoration
6. Battle of the sexes leads to a biological arms race
7. Battle of the sexes leads to evolutionary arms race
8. Battle to save last stronghold of the red squirrel
9. Baby Dolphin "Little Orphan Annie" Loses Battle For Her Life
10. Late Blight Battle Goes Online, Marking 150 Year Struggle Since Irish Potato Famine
11. Landmark agreement between Samoa and UC Berkeley could help search for AIDS cure

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/14/2019)... LAKE CITY, and MARTINSRIED, Germany (PRWEB) , ... ... ... in high-throughput antibody screening and characterization, announced today that they have opened a ... Carterra’s platform has fueled the need for the new office. , The Munich ...
(Date:8/14/2019)... JOLLA, Calif. (PRWEB) , ... August 14, 2019 , ... ... insight into their future children, announces inclusion in the 38th annual Inc. 500|5000 ... been eligible to apply. To qualify, companies must have been founded and generating revenue ...
(Date:8/9/2019)... ... August 09, 2019 , ... With a demand in healthcare to ... patients will visit urgent care centers (UCC) in the coming years, according to a ... The Market for Urgent Care Centers , is a detailed look at the current ...
Breaking Biology News(10 mins):
(Date:8/14/2019)... ... August 13, 2019 , ... ... on prepackaged mobile phases for QC laboratories. After gaining a few significant clients, ... sciences approach into a valued supplier of manufacturing processing solutions, including reagents for ...
(Date:8/6/2019)... ... August 06, 2019 , ... ... characterizing microbiome populations down to the strain level, has announced partnerships with six ... other products to companies and research organizations in Australia, Benelux, Indonesia, Korea, Malaysia, ...
(Date:7/30/2019)... SAN DIEGO (PRWEB) , ... July 30, 2019 ... ... Lajollacooks4u, San Diego’s premiere team building and cooking events company. Not only has ... but it has also started offering Private Cooking Parties to its guests. , ...
(Date:7/19/2019)... NEWPORT BEACH, Calif. (PRWEB) , ... July 18, ... ... who is also known as “Ravi Everest,” will be joining forces with California-based ... to be held from July 20-22nd. Coalition Duchenne raises awareness and funding for ...
Breaking Biology Technology:
Cached News: