Navigation Links
Scientists rebuild ancient proteins to reveal primordial Earth's temperature
Date:2/7/2008

GAINESVILLE, Fla. Using the genetic equivalent of an ancient thermometer, a team of scientists has determined that the Earth endured a massive cooling period between 500 million and 3.5 billion years ago.

Reporting today (Feb. 7) in the journal Nature, researchers from the University of Florida, the Foundation for Applied Molecular Evolution and the biotechnology company DNA2.0 describe how they reconstructed proteins from ancient bacteria to measure the Earths temperature over the ages.

By studying proteins encoded by these primordial genes, we are able to infer information about the environmental conditions of the early Earth, said Eric Gaucher, Ph.D., president of scientific research at the Foundation for Applied Molecular Evolution in Gainesville and the studys lead scientist. Genes evolve to adapt to the environmental conditions in which an organism lives. Resurrecting these since long-extinct genes gives us the opportunity to analyze and dissect the ancient surroundings that have been recorded in the gene sequence. The genes essentially behave as dynamic fossils.

The team wanted to measure Earths temperature billions of years ago to learn more about life on Earth during the Precambrian period. But instead of taking the traditional route analyzing rock formations or measuring isotopes in fossils they opted to do what they knew best: protein reconstruction.

Weve analyzed the temperature stability of proteins inside organisms that were around during those times, said Omjoy Ganesh, Ph.D., a structural biologist in the UF College of Medicines department of biochemistry and molecular biology. The ancient oceans were warmer. For ocean organisms living during that time to survive, the proteins within them had to be stable at high temperatures.

After scanning multiple databases, the scientists struck gold with a protein called elongation factor, which helps bacteria string together amino acids to form other protein
'/>"/>

Contact: Ann Griswold
anngriswold@gmail.com
352-273-5819
University of Florida
Source:Eurekalert

Page: 1 2

Related biology news :

1. UK scientists working to help cut ID theft
2. Scientists show that mitochondrial DNA variants are linked to risk factors for type 2 diabetes
3. Comet probes reveal evidence of origin of life, scientists claim
4. Scientists link fragile X tremor/ataxia syndrome to binding protein in RNA
5. Male elephants get photo IDs from scientists
6. Scientists retrace evolution with first atomic structure of an ancient protein
7. Muscle mass: Scientists identify novel mode of transcriptional regulation during myogenesis
8. Carnegie Mellon scientists develop nanogels that enable controlled delivery of carbohydrate drugs
9. Clemson scientists shed light on molecules in living cells
10. Scientists tackle mystery mountain illness
11. T. rex quicker than Becks, say scientists
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/28/2014)... St. Jude Children,s Research Hospital study found that 73 ... doubled their risk of developing metabolic syndrome and related ... The results appear in the current issue of the ... the 1,598 adult survivors of childhood cancer in the ... risk factors like high blood pressure, abdominal obesity, elevated ...
(Date:7/28/2014)... natural virus killers to prevent and treat HIV infection ... inflammatory response these molecules can arouse as they get ... scientists at the Weizmann Institute and the National Institutes ... of these molecules interferons around the time ... of the disease. Their research appeared in Nature ...
(Date:7/27/2014)... vitro study has revealed that nicotine and cotinine, a ... by a certain carcinogen in smoke. , The carcinogen ... tobacco leaves and ultimately ends up in the tobacco ... and liver, where it is activated by a variety ... mice has revealed that nicotine can partially interfere with ...
Breaking Biology News(10 mins):Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 2Unhealthy habits more than double risk of metabolic syndrome in childhood cancer survivors 3Interfering with interferon 2Nicotine found to inhibit DNA-strand break caused by a certain carcinogen in smoke 2
... battle between the bacterial pathogen Salmonella and the ... at the Biozentrum of the University of Basel has now ... host,s immune system. Their findings are published in the scientific ... is a bacterial infection caused by the pathogen Salmonella ...
... atom located in the vicinity of a molecule can change ... international team of researchers was able to change persistently positions ... by approaching a single copper atom to the molecule. ... simple organic molecule can be switched by approaching a single ...
... or the pipes of an organ, the proteins in the ... Now, a new study provides what researchers say is ... a technique they developed based on terahertz near-field microscopy, scientists ... (HWI) have for the first time observed in detail the ...
Cached Biology News:Typhoid fever -- A race against time 22-proton bit controlled by a single copper atom 22-proton bit controlled by a single copper atom 3The symphony of life, revealed 2The symphony of life, revealed 3
(Date:7/25/2014)... Lawrence Livermore scientists Charles Westbrook and William Pitz ... The World's Most Influential Scientific Minds ." , Westbrook ... were identified by analyzing citation data over the last ... work (2002-2012 and 2012-2013). The two were selected from ... , "This recognition is a great honor for Charlie ...
(Date:7/25/2014)... IN (PRWEB) July 25, 2014 At ... (FAA) has granted a 60-day extension for the public ... the Special Rule for Model Aircraft established by Congress ... of 2012. The 60-day extension establishes the new deadline ... United States Department of Transportation/FAA notice published in the ...
(Date:7/24/2014)... 2014 -- A novel combination of microscopy and data ... Oak Ridge National Laboratory an unprecedented look at the ... and electrochemical properties. , The research team led ... surface of a perovskite manganite, a complex material that ... to understand surface behavior could benefit researchers who are ...
(Date:7/24/2014)... Calif. , July 24, 2014  Asterias ... in the emerging field of regenerative medicine, announced ... of a presentation to investors on Tuesday, July ... PDT.  The presentation will include an overview of ... access the webcast, visit http://www.ustream.tv/channel/asterias-biotherapeutics at ...
Breaking Biology Technology:Scientists Burst onto Influential List for Combustion Research 2Scientists Burst onto Influential List for Combustion Research 3Scientists Burst onto Influential List for Combustion Research 4FAA Grants Comment Extension at the Request of AMA 2ORNL study reveals new characteristics of complex oxide surfaces 2Asterias Biotherapeutics Announces Live Investor Webcast 2Asterias Biotherapeutics Announces Live Investor Webcast 3Asterias Biotherapeutics Announces Live Investor Webcast 4
... Sept. 23 Though the new USP 797,regulations, ... impact of following the new minimums has the ... warns Steven Wieczorek,Supervisor, Environmental Sciences, Microtest, Inc., ... of USP 797,establishes bi-annual environmental sampling and testing ...
... Sept. 23 Environmental,Tectonics Corporation,s (Amex: ETC ... the sale and placement of two BARA-MED(R) XD,Monoplace ... Facility was established in Corpus Christi, Texas, in ... medical center in the region. The,facility offers South ...
... Campaign Highlights Signs, Symptoms, Impact on Families of von ... Willebrand ... are affected by the most common hereditary bleeding disorder, von,Willebrand disease (VWD), ... but according to the Centers for Disease Control and,Prevention (CDC) it takes ...
Cached Biology Technology:New USP 797 Regulations May Create New Hazards for Compounding Pharmacy Directors 2New USP 797 Regulations May Create New Hazards for Compounding Pharmacy Directors 3Environmental Tectonics Corporation Announces a Multiple Sale for Monoplace Hyperbaric Chambers 2Environmental Tectonics Corporation Announces a Multiple Sale for Monoplace Hyperbaric Chambers 3Video: Moms Raise 'Red Flag' About the Dangers of Widely Undiagnosed Bleeding Disorder 2Video: Moms Raise 'Red Flag' About the Dangers of Widely Undiagnosed Bleeding Disorder 3Video: Moms Raise 'Red Flag' About the Dangers of Widely Undiagnosed Bleeding Disorder 4
Goat polyclonal to HSPC150 ( Abpromise for all tested applications). entrezGeneID: 29089...
Anti-Mouse Reticular Fibroblast, Purified (Clone ER-TR7) (rat IgG2a)...
Mouse monoclonal [SPM302] to BCAR1, prediluted ( Abpromise for all tested applications). entrezGeneID: 9564 SwissProtID: P56945...
p21 Ras Immunogen: Recombinant C-H-ras p21(val-12). Storage: 4 C...
Biology Products: