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:9/30/2014)... When it comes to using marijuana, new research, involving ... the Journal of Leukocyte Biology , ... mean that you should. That,s because a team of ... may do serious long-term damage to the immune system. ... inflammatory diseases, such as multiple sclerosis, inflammatory bowel disease ...
(Date:9/30/2014)... to know what goes wrong with your muscles because of ... what "normal" actually is. That,s where a new research report ... FASEB Journal comes in. In the report, a ... molecules that can help scientists "see" which genes are active ... found never-before-detected gene activity and that men have approximately 400 ...
(Date:9/30/2014)... is available in German . ... behavioural response to risky situations such as exposure to ... now found in a long-term study on different populations ... metabolic rate and ambient temperature. High metabolic rates and ... in these scenarios birds were more likely to approach ...
Breaking Biology News(10 mins):Adolescent exposure to thc may cause immune systems to go up in smoke 2Scientists identify which genes are active in muscles of men and women 2Risky metabolism 2
... BEER-SHEVA, ISRAEL, August 8, 2012 Ben-Gurion University of ... (290,000) from the Wolfson Family Charitable Trust and Wolfson ... and its environmental impact. According to BGU,s Vice ... two projects are part of the University,s overall commitment ...
... Innovative problem solving requires trying many different solutions. That,s ... that it,s true for hyenas, too. The study, published ... Royal Society B , presented steel puzzle boxes with raw ... the meat, the hyenas had to slide open a bolt ...
... For much of the year drought has been plaguing American ... appear to be losing the turf war against climate when ... State University-led study looked at the drought tolerance of 426 ... to better understand how grasslands in different parts of the ...
Cached Biology News:Diversity keeps grasslands resilient to drought, climate change 2Diversity keeps grasslands resilient to drought, climate change 3
(Date:9/30/2014)... is available in German . ... Universitt Mnchen (TUM) have demonstrated a new kind of ... that future computer chips could be based on three-dimensional ... main enabling technology of the semiconductor industry CMOS ... TUM researchers and collaborators at the University of Notre ...
(Date:9/30/2014)... YORK , Sept. 30, 2014 ... and segments with highest potential revenues Do you ... updated report gives you revenue predictions for those ... For those therapies you find financial data, R&D ... analysis you get sales forecasts to 2024 at ...
(Date:9/30/2014)... 30, 2014 Over the last decade, ... to rising R&D budgets and increased acceptance of new ... pharmaceutical and biotechnology industries are also catalyzing the growth ... market is expected to grow at a strong CAGR ... to be worth $2,532.6 million by 2019. The market ...
(Date:9/30/2014)... 30, 2014  RegeneRx Biopharmaceuticals, Inc. (OTC: RGRX) ... has received a Canadian Patent for Inhibition or ... patent includes claims using thymosin beta 4, various ... for these purposes.  The patent will expire in ... ( www.regenerx.com ) RegeneRx is ...
Breaking Biology Technology:A new dimension for integrated circuits: 3-D nanomagnetic logic 2A new dimension for integrated circuits: 3-D nanomagnetic logic 3Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 2Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 3Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 4Biosimilars and Follow-On Biologics: World Industry and Market Prospects 2014-2024 5Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 2Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 3Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 4Global Laboratory Filtration Market To See 7.0% CAGR to 2019 Says a Research Report Available at ReportsnReports.com 5RegeneRx Receives Canadian Patent for Inhibition or Reversal of Skin Aging 2
... Workshop Set for Sept. 3, UPPSALA, Sweden and ... Bernard de Bruyne, M.D., Ph.D., will present the,benefits of ... the outcomes of multivessel PCI in a workshop at ... The EBAC-accredited,workshop, which is sponsored by Radi Medical Systems, ...
... Cepheid (Nasdaq:,CPHD) will present at the Thomas Weisel ... Hotel, Boston, September 5 to 7, 2007. Chief,Executive ... Finance and,Chief Financial Officer, John R. Sluis will ... The webcast, along with accompanying presentation slides, may ...
... Verenium,Corporation (Nasdaq: VRNM ), a leading developer of ... high-performance specialty,enzymes, announced today that Carlos A. Riva, President ... the Cowen and Company Clean,Energy Conference. The presentation is ... 6, 2007 and will take place at Le Parker ...
Cached Biology Technology:Interventional Cardiologists Nico Pijls, Bernard De Bruyne to Discuss Benefits of Measuring Coronary Pressure in Improving Multivessel PCI at ESC Congress 2007 2Cepheid to Present at Thomas Weisel Partners Healthcare Conference 2Verenium Corporation to Present at the Upcoming Cowen and Company Clean Energy Conference 2Verenium Corporation to Present at the Upcoming Cowen and Company Clean Energy Conference 3
... Certify products ATP-Free using Mo Bio ... sensitive ATP-Free certification service that will allow you ... level of accuracy and enable you to deliver ... Mo Bios ATP detection limit is 3.5 ...
... Microarrays: Biomedical Photometrics Inc. (Waterloo, Ontario, Canada) ... have collaborated to develop a fluorescence reader ... The DNAscope AT is based on BPIs ... automatically reads up to six ArrayTubes in ...
... a comprehensive kinase analysis service utilizing ... peptide microarrays synthesized on Paraflo microfluidic ... quantitative measurement of kinase kinetic activities, ... service includes preparation of your kinase ...
... The JNK (c-Jun NH2-terminal kinase) ... three identified MAP kinase pathways in ... response to environmental stress, is associated ... itself, and is implicated in the ...
Biology Products: