Navigation Links
ASU researcher may have discovered key to life before its origin on Earth
Date:2/28/2008

of any contamination. They discovered a preponderance of left-handed amino acids over their right-handed form.

The findings of Cronin and Pizzarello are probably the first demonstration that there may be natural processes in the cosmos that generate a preferred amino acid handedness, Jeffrey Bada of the Scripps Institution of Oceanography, La Jolla, Calif., said at the time.

The new PNAS work was made possible by the finding in Antarctica of an exceptionally pristine meteorite. Antarctic ices are good curators of meteorites. After a meteorite falls -- and meteorites have been falling throughout the history of Earth -- it is quickly covered by snow and buried in the ice. Because these ices are in constant motion, when they come to a mountain, they will flow over the hill and bring meteorites to the surface.

Thanks to the pristine nature of this meteorite, we were able to demonstrate that other extraterrestrial amino acids carry the left-handed excesses in meteorites and, above all, that these excesses appear to signify that their precursor molecules, the aldehydes, also carried such excesses, Pizzarello said. In other words, a molecular trait that defines life seems to have broader distribution as well as a long cosmic lineage.

This study may provide an important clue to the origin of molecular asymmetry, added Brown associate professor and co-author Huang.


'/>"/>

Contact: Skip Derra
skip.derra@asu.edu
480-965-4823
Arizona State University
Source:Eurekalert

Page: 1 2

Related biology news :

1. Electronic structure of DNA revealed for 1st time by Hebrew University and collaborating researchers
2. Researchers offer new theory for dogfish and skate population outburst on Georges Bank
3. UCLA researchers solve decade-old mystery
4. Rats on islands disrupt ecosystems from land to sea, researchers find
5. Iowa State researchers help piece together the corn genomes first draft
6. U-M researchers release most detailed global study of genetic variation
7. LSU researchers challenge analyses on sustainability of Gulf fisheries
8. Researchers probe a DNA repair enzyme
9. Managing uncertainty important in ecological balance: ASU researcher
10. Oregon researchers study widespread areas of low oxygen off northwest coast
11. Stanford researchers say living corals thousands of years old hold clues to past climate changes
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:7/29/2014)... Aarhus University researchers have developed an easier method ... strengthen the work involved in diagnosing diseases. , ... provides a strong partnership that can be used ... conjugates which tag proteins with DNA ... sensitive detection and visualisation of biological material. The ...
(Date:7/29/2014)... PARIS, 29 JULY 2014 With thirty days to ... for the FEBS-EMBO 2014 Conference are well underway. The ... Biochemical Societies (FEBS), EMBO, and the French Society for ... Saturday, 30 August to Thursday, 4 September at the ... 2014 Conference is the largest meeting for the life ...
(Date:7/29/2014)... bacteria and algae, propel themselves using whip-like appendages ... a millimetre long, function like tiny oars, helping ... cilia are found on the surfaces of many ... liquids over the cell. , Flagella and ... expel pathogens from our airways, they establish the ...
Breaking Biology News(10 mins):New method provides researchers with efficient tool for tagging proteins 2Counting down to FEBS-EMBO 2014 in Paris, France 2Microscopic rowing -- without a cox 2Microscopic rowing -- without a cox 3
... Fusarium samples. A Virginia Tech plant pathologist ... detect airborne pathogens above agricultural fields. , ... and weed science in the College of Agriculture ... and engineering with his interdisciplinary research but has ...
... common practice among many college students involves "pulling all-nighters", ... practice associated with lower grade-point averages compared to those ... abstract that will be presented Wednesday at SLEEP 2007, ... Societies (APSS). , "Sleep in college students is generally ...
... a microbial protein to improve water quality. , But ... from potentially toxic nanoparticles in their own environments, and ... the same thing on a larger scale. , ... and Lawrence Berkeley National Laboratory found that bacteria from ...
Cached Biology News:Small, self-controlled planes combine plant pathology and engineering 2Small, self-controlled planes combine plant pathology and engineering 3Microbes at work cleaning up the environment 2
(Date:7/29/2014)... 29, 2014  Pomerantz LLP is investigating claims on ... the "Company") (NASDAQ: IPXL).  Such investors are advised to ... or 888-476-6529, ext. 237. The investigation ... directors have violated Sections 10(b) and 20(a) of the ... July 29, 2014, Impax Laboratories, Inc. (the "Company") issued ...
(Date:7/29/2014)... Calif. , July 29, 2014 /PRNewswire-iReach/ -- ... agreement with FORMA Therapeutics, Inc., to provide access ... proprietary fragment-based lead discovery platform for novel small ... excited about the opportunity to work with FORMA ... of epigenetics and protein homeostasis. FORMA Therapeutics, decision ...
(Date:7/29/2014)... (PRWEB) July 29, 2014 TransVac Solutions, ... linen collection and transport solutions for hospitals, will be ... Healthcare Engineering (ASHE) Annual Conference & Technical Exhibition Aug. ... present its technology for making hospitals cleaner, reducing infection ... over the hospital’s life cycle. Staff will be ...
(Date:7/29/2014)... 29, 2014  Sigma-Aldrich Corporation (NASDAQ: SIAL ... increased its investment in Green Chemistry and donated more ... last year, the Company announced Monday in its new ... the World? The report comes in ... being a responsible corporate citizen, including recognition for the ...
Breaking Biology Technology:SHAREHOLDER ALERT: Pomerantz Law Firm Investigates Claims On Behalf of Investors of Impax Laboratories, Inc. - IPXL 2Nanosyn Announces Expanded Partnership With FORMA Therapeutics 2TransVac Presents Cost Saving Technology at ASHE Conference for Keeping Hospitals Cleaner 2Sigma-Aldrich Achieves Record Success in Environmental, Community Initiatives 2Sigma-Aldrich Achieves Record Success in Environmental, Community Initiatives 3
... prescription ... solution, ... new Xtremityscan System and give away a free unit at the ... Xtremityscan is a digital shape acquisition system that allows users ...
... to Create One of the Industry,s Largest eClinical ... ... PAREXEL International,Corporation (Nasdaq: PRXL ), a leading global biopharmaceutical ... plc, a company traded on the London Stock Exchange, ("ClinPhone"),have ...
... June 13 On Thursday, June 19, 2008,at 7:00 ... Time,members of Cell Therapeutics, Inc.,s (CTI) (Nasdaq and MTA: ... of the Annual Meeting,of Shareholders at its Seattle headquarters ... meeting will be webcast live on CTI,s website,at ...
Cached Biology Technology:PAL Health Technologies Debuts Xtremityscan System at Western Podiatric Medical Congress 2PAREXEL Reaches Agreement To Acquire ClinPhone 2PAREXEL Reaches Agreement To Acquire ClinPhone 3PAREXEL Reaches Agreement To Acquire ClinPhone 4PAREXEL Reaches Agreement To Acquire ClinPhone 5Cell Therapeutics, Inc. Special Meeting in Lieu of Annual Meeting of Shareholders Scheduled for Thursday, June 19, 2008 2
Direct ELISA Assay Diluent - EDTA, 10 L...
... Turn routine agarose gel electrophoresis into ... 96 system. This bufferless, pre-cast system is ... preparations, restriction digests, and more. Fully automated, ... the E-Gel 96 system makes your high-throughput ...
SpectroQuest single beam 4nm UV/Vis spectrophotometer; stand-alone unit; large angled LCD screen; large sample compartment...
... Cloning Kit, 40 reactions. Optimized for ... all PCR products with blunt or ... by offering consistently better signal-to-noise ratios ... positive clones.Amplicons generated by proof-reading thermostable ...
Biology Products: