Navigation Links
New research rejects 80-year theory of 'primordial soup' as the origin of life
Date:2/2/2010

ical gradients across a honeycomb of microscopic natural caverns at hydrothermal vents. These catalytic cells generated lipids, proteins and nucleotides giving rise to the first true cells.

The team focused on ideas pioneered by geochemist Michael J. Russell, on alkaline deep sea vents, which produce chemical gradients very similar to those used by almost all living organisms today - a gradient of protons over a membrane. Early organisms likely exploited these gradients through a process called chemiosmosis, in which the proton gradient is used to drive synthesis of the universal energy currency, ATP, or simpler equivalents. Later on cells evolved to generate their own proton gradient by way of electron transfer from a donor to an acceptor. The team argue that the first donor was hydrogen and the first acceptor was CO2.

"Modern living cells have inherited the same size of proton gradient, and, crucially, the same orientation positive outside and negative inside as the inorganic vesicles from which they arose" said co-author John Allen, a biochemist at Queen Mary, University of London.

"Thermodynamic constraints mean that chemiosmosis is strictly necessary for carbon and energy metabolism in all organisms that grow from simple chemical ingredients [autotrophy] today, and presumably the first free-living cells," said Lane. "Here we consider how the earliest cells might have harnessed a geochemically created force and then learned to make their own."

This was a vital transition, as chemiosmosis is the only mechanism by which organisms could escape from the vents. "The reason that all organisms are chemiosmotic today is simply that they inherited it from the very time and place that the first cells evolved and they could not have evolved without it," said Martin.

"Far from being too complex to have powered early life, it is nearly impossible to see how life could have begun without chemiosmosis", concluded Lane. "It
'/>"/>

Contact: Ben Norman
Benorman@wiley.com
44-124-377-0375
Wiley-Blackwell
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. Research at Marshall University may lead to new ways to transport and manipulate molecules
2. Ability to navigate may be linked to genes, researcher says
3. Scripps Research scientists create new way to screen libraries of 10 million or more compounds
4. MSU researcher identifies cell mechanism leading to diabetic blindness
5. Boston University School of Medicine researcher awarded the 2010 Avanti Award in Lipids
6. Case Western Reserve University works with Johnson & Johnson Services Inc. on research grant
7. National Jewish Health researchers discover how virulent bacteria
8. Epigenetics could help researchers determine any risks associated with low-dose radiation
9. University of the Basque Country researchers decode transcriptome for gray mullet
10. Advances in cancer detection research by Virginia Tech engineer featured in British magazine
11. Research breakthrough could lead to new treatment for malaria
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:4/17/2014)... A credit-card-sized anthrax detection cartridge developed at Sandia ... makes testing safer, easier, faster and cheaper. , ... is commonly found in soils all over the world ... both humans and animals. The bacteria can survive in ... B. anthracis may occur through skin contact, inhalation ...
(Date:4/17/2014)... engineer has developed a patented technique that improves ... The same technique could help police during drug ... Kay L. Theede chair in engineering and department ... research team have created a template-based system that ... The distance detection method called stand-off bomb ...
(Date:4/17/2014)... honored Clemson professor Rajendra Singh Thursday as a ... and expand solar deployment in the residential, commercial ... Banks Professor of Electrical and Computer Engineering and ... considered a local hero leading the charge across ... in solar power and driving policy changes at ...
Breaking Biology News(10 mins):Pocket-sized anthrax detector aids global agriculture 2Pocket-sized anthrax detector aids global agriculture 3Patented research remotely detects nitrogen-rich explosives 2White House honors Clemson professor as 'Champion of Change' for solar deployment 2
... are the most populous organisms on the planet. They ... habitats by means of genetic variations that provide the ... what scientists believe is a random mutation and exchange ... that sometimes confers an advantage, and which then becomes ...
... to experience a "moderate" regional "red tide" this spring and ... to study the toxic algae that causes the bloom. The ... beings, however the toxins they produce can accumulate in filter-feeding ... shellfish poisoning (PSP) in humans who consume them. Under ...
... honored as the 2012 recipient of the ACMG Foundation/Signature ... College of Medical Genetics (ACMG) 2012 Annual Clinical Genetics ... for the award for her platform presentation, "Triheptanoin Therapy ... Ms. Barone will complete her Doctor of Medicine degree ...
Cached Biology News:Study shows unified process of evolution in bacteria and sexual eukaryotes 2Study shows unified process of evolution in bacteria and sexual eukaryotes 3Researchers report potential for a 'moderate' New England 'red tide' in 2012 2Researchers report potential for a 'moderate' New England 'red tide' in 2012 3Researchers report potential for a 'moderate' New England 'red tide' in 2012 42012 ACMG Foundation/Signature Genomic Laboratories Travel Award winner announced 2
(Date:1/15/2014)... The Pittcon Organizing Committee is pleased to announce that Innovative ... e-Journal and producer of Food Labs Conference , ... the co-location of Food Labs Conference to be held in ... fee to attend the two-day Food Lab Conference, March 4-5. ...
(Date:1/15/2014)... 2014 ­ RedBrick Health , a fast-growing leader ... announces that EmblemHealth , the New ... now providing the RedBrick Compass health assessment, combined with ... of its members. EmblemHealth is among the first health ...
(Date:1/15/2014)... 2014 The Microcompetition with Foreign DNA theory ... of these latent viruses is the Epstein Barr Virus (EBV), ... arthritis (RA) is a chronic inflammatory disease that destroys the ... that RA patients have high concentrations of EBV DNA in ...
(Date:1/15/2014)... TaiGen Biotechnology Company, Limited ("TaiGen") today announced that they ... Russian pharmaceutical company, to develop and commercialize nemonoxacin (Taigexyn ... , Turkey and other members ... antibiotic for the treatment of bacterial infections including those ...
Breaking Biology Technology:Pittcon Announces Second Year Partnership With Food Safety Tech 2Pittcon Announces Second Year Partnership With Food Safety Tech 3EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 2EmblemHealth Selects RedBrick Health to Power its Next-Generation Health Engagement and Behavior Change System 3Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 2Study: Rheumatoid Arthritis (RA) Patients Have EBV; The CBCD Says this is Consistent with Microcompetition 3TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 2TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 3TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 4
... Rao and his team are researching nano-scale cantilevers that have ... or gases in the air. Put them into a small ... alerts in battle, in industry, in health care and even ... to do this work has been something we,ve only seen ...
... 98% and Adjusted EBITDA Up 70% Year-Over-Year, ... Inc. (NYSE: WX ), a leading pharmaceutical, ... with operations,in China and the United States, today ... ended September 30, 2008. During the quarter,WuXi,s net ...
... announced today the successful closure of its Starfish ... capital fundraising in,Australia. The fund will invest in ... of this fundraising is an endorsement of Starfish ... the development of,innovative companies that, with the right ...
Cached Biology Technology:Clemson researchers advance nanoscale electromechanical sensors 2WuXi PharmaTech Announces Third Quarter 2008 Results 2WuXi PharmaTech Announces Third Quarter 2008 Results 3WuXi PharmaTech Announces Third Quarter 2008 Results 4WuXi PharmaTech Announces Third Quarter 2008 Results 5WuXi PharmaTech Announces Third Quarter 2008 Results 6WuXi PharmaTech Announces Third Quarter 2008 Results 7WuXi PharmaTech Announces Third Quarter 2008 Results 8WuXi PharmaTech Announces Third Quarter 2008 Results 9WuXi PharmaTech Announces Third Quarter 2008 Results 10WuXi PharmaTech Announces Third Quarter 2008 Results 11WuXi PharmaTech Announces Third Quarter 2008 Results 12WuXi PharmaTech Announces Third Quarter 2008 Results 13Starfish Ventures Closes Australia's Largest Venture Capital Fund With $185 Million Tech Fund 2
Sterile concentration of Dithiothreitol (DTT) solution in phosphate buffer (pH 7.0). Dilute contents in one vial (10- fold) to 100 ml. For use in liquefying sputum samples....
Silica bead method is an economic method of DNA extraction from agarose...
DTT, 25g...
... Agarose overlays are commonly ... Many commercial "DNA grade" agaroses ... toxic to insect cells or ... to obtain good overlays. Novagen's ...
Biology Products: