Navigation Links
NASA and university researchers find a clue to how life turned left
Date:7/25/2012

GREENBELT, Md. -- Researchers analyzing meteorite fragments that fell on a frozen lake in Canada have developed an explanation for the origin of life's handedness why living things only use molecules with specific orientations. The work also gave the strongest evidence to date that liquid water inside an asteroid leads to a strong preference of left-handed over right-handed forms of some common protein amino acids in meteorites. The result makes the search for extraterrestrial life more challenging.

"Our analysis of the amino acids in meteorite fragments from Tagish Lake gave us one possible explanation for why all known life uses only left-handed versions of amino acids to build proteins," said Dr. Daniel Glavin of NASA's Goddard Space Flight Center in Greenbelt, Md. Glavin is lead author of a paper on this research to be published in the journal Meteoritics and Planetary Science.

In January, 2000, a large meteoroid exploded in the atmosphere over northern British Columbia, Canada, and rained fragments across the frozen surface of Tagish Lake. Because many people witnessed the fireball, pieces were collected within days and kept preserved in their frozen state. This ensured that there was very little contamination from terrestrial life. "The Tagish Lake meteorite continues to reveal more secrets about the early Solar System the more we investigate it," said Dr. Christopher Herd of the University of Alberta, Edmonton, Canada, a co-author on the paper who provided samples of the Tagish Lake meteorite for the team to analyze. "This latest study gives us a glimpse into the role that water percolating through asteroids must have played in making the left-handed amino acids that are so characteristic of all life on Earth."

Proteins are the workhorse molecules of life, used in everything from structures like hair to enzymes, the catalysts that speed up or regulate chemical reactions. Just as the 26 letters of the alphabet are arra
'/>"/>

Contact: Bill Steigerwald
William.a.steigerwald@nasa.gov
301-286-5017
NASA/Goddard Space Flight Center
Source:Eurekalert

Page: 1 2 3 4 5

Related biology news :

1. University of Houston study shows BP oil spill hurt marshes, but recovery possible
2. University of Alberta led research may have discovered how memories are encoded in our brains
3. BGI, University of Helsinki and Wuhan University sign a MOU concerning cooperation on genomics
4. Marshall University study may lead to new treatments for prostate cancer
5. University leads £6 million EU project to tackle obesity
6. A University of Tennessee professors hypothesis may be game changer for evolutionary theory
7. Life expectancy may affect when you get married, divorced, have kids: Queens University study
8. University of Toronto biologists predict extinction for organisms with poor quality genes
9. University of Minnesota invention helps advance reliability of alternative energy
10. Israel names Tel Aviv Universitys Renewable Energy Center a Center of Research Excellence
11. University of Minnesota startup offers game-changing energy solutions that reduce CO2 emissions
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:2/10/2015)... WALTHAM, Mass., Feb. 10, 2015  Alere Inc. ... announced its financial results for the quarter ended ... Executive Officer and President of Alere said, "We ... refocussing Alere as the global leader in rapid ... closing the Alere Health divestiture in early January ...
(Date:2/5/2015)... Conn. , Jan. 26, 2015 NXT-ID, Inc. ... the "Company"), a biometric authentication company focused on the ... new corporate website ( http://www.nxt-id.com/ ) as part of ... smart wallet. The Company launched its new consumer website ... Gino Pereira , CEO of NXT-ID said, "Our new ...
(Date:2/5/2015)... , Jan. 30, 2015  It is gratifying ... power and potential for genomic science as a means ... disease prevention and treatment.  I was honored to participate ... government-funded precision medicine program. Since the ... science of genomics—from the first sequenced genome of a ...
Breaking Biology News(10 mins):Alere Inc. Announces Fourth Quarter 2014 Results 2Alere Inc. Announces Fourth Quarter 2014 Results 3Alere Inc. Announces Fourth Quarter 2014 Results 4Alere Inc. Announces Fourth Quarter 2014 Results 5Alere Inc. Announces Fourth Quarter 2014 Results 6Alere Inc. Announces Fourth Quarter 2014 Results 7Alere Inc. Announces Fourth Quarter 2014 Results 8Alere Inc. Announces Fourth Quarter 2014 Results 9Alere Inc. Announces Fourth Quarter 2014 Results 10Alere Inc. Announces Fourth Quarter 2014 Results 11Alere Inc. Announces Fourth Quarter 2014 Results 12Alere Inc. Announces Fourth Quarter 2014 Results 13Alere Inc. Announces Fourth Quarter 2014 Results 14Alere Inc. Announces Fourth Quarter 2014 Results 15Alere Inc. Announces Fourth Quarter 2014 Results 16Alere Inc. Announces Fourth Quarter 2014 Results 17Alere Inc. Announces Fourth Quarter 2014 Results 18Alere Inc. Announces Fourth Quarter 2014 Results 19Alere Inc. Announces Fourth Quarter 2014 Results 20Alere Inc. Announces Fourth Quarter 2014 Results 21Alere Inc. Announces Fourth Quarter 2014 Results 22Alere Inc. Announces Fourth Quarter 2014 Results 23Alere Inc. Announces Fourth Quarter 2014 Results 24Alere Inc. Announces Fourth Quarter 2014 Results 25Alere Inc. Announces Fourth Quarter 2014 Results 26Alere Inc. Announces Fourth Quarter 2014 Results 27Alere Inc. Announces Fourth Quarter 2014 Results 28Alere Inc. Announces Fourth Quarter 2014 Results 29Alere Inc. Announces Fourth Quarter 2014 Results 30Alere Inc. Announces Fourth Quarter 2014 Results 31Alere Inc. Announces Fourth Quarter 2014 Results 32Alere Inc. Announces Fourth Quarter 2014 Results 33Alere Inc. Announces Fourth Quarter 2014 Results 34Alere Inc. Announces Fourth Quarter 2014 Results 35Alere Inc. Announces Fourth Quarter 2014 Results 36
... Nationwide Children,s Hospital was awarded $11.5 million from the ... role as one of two Biospecimen Core Resources (BCR) for ... could total up to $49.2 million over six years. ... Health (NIH). The goal of the project is to perform ...
... Jan. 10, 2011 Aware, Inc. (Nasdaq: AWRE ... telecommunications and biometrics industries, today announced that on January 5, ... Jr. and John S. Stafford, III to the Aware Board ... a Class III Director and will serve on the Board,s ...
... EAST LANSING, Mich. As the rate of preterm ... U.S. births a Michigan State University epidemiologist is ... some mothers who deliver babies early are at an ... links would help researchers identify which groups of women ...
Cached Biology News:Nationwide Children's Hospital awarded $11.5 million contract extension for biospecimen banking 2Aware Announces Appointment of New Directors 2Aware Announces Appointment of New Directors 3Why do preterm deliveries pose cardiovascular risks for moms? 2
(Date:3/3/2015)... CARLOS, Calif. , March 3, 2015  Rosa ... expertise in drug-disease modeling and simulation research, today announced ... the 2015 American Society for Clinical Pharmacology and Therapeutics ... March 3-7 2015.   Logo - ... and Rosa will present a poster describing a quantitative ...
(Date:3/3/2015)... 2015 Cambridge Semantics, the leading provider ... today announced that it has been named to KMWorld’s ... Knowledge Management.’ , To create the list each ... and system integrators who identify organizations dedicated to the ... information to the right people at the right time. ...
(Date:3/3/2015)... Elsevier,s DirectCourse online curricula ... training to comply with new CMS requirements   ... new crosswalk tool to help providers of ... direct service workers as a means to comply with ... CMS amended the regulations, effective March 17, ...
(Date:3/3/2015)... 2015 GlobalStemCellsGroup.com has recruited ... Alcocer, a biomedical researcher and founding partner of Criogenix ... team of biomedical professors who will teach the “Diplomat ... SA de CV is a private company registered in ... Companies in Mexico (RENIECYT). , Camacho Alcocer will teach ...
Breaking Biology Technology:Rosa & Co. Announces Two Poster Presentations at the American Society for Clinical Pharmacology and Therapeutics 2015 Annual Meeting 2Rosa & Co. Announces Two Poster Presentations at the American Society for Clinical Pharmacology and Therapeutics 2015 Annual Meeting 3Cambridge Semantics Named to KMWorld’s 2015 ‘100 Companies That Matter in Knowledge Management’ 2Elsevier's DirectCourse Can Help States Meet and Exceed New CMS Requirements for Home and Community-Based Services 2Elsevier's DirectCourse Can Help States Meet and Exceed New CMS Requirements for Home and Community-Based Services 3Mario Camacho Alcocer Joins Global Stem Cells Group Faculty 2Mario Camacho Alcocer Joins Global Stem Cells Group Faculty 3
... just the expected crowd of educators is congregating at ... Conference that runs through Friday; as the technologies ... fields involved. In addition to K-12 and higher education ... and military organizations. , ,Distance Learning 2005 is addressing ...
... The Centers for Medicare and Medicaid Services plan to officially ... Vista within the next few weeks, according to news accounts ... ,CMS officials hope that providing the new program, known as ... records by private clinicians. , ,Vista, a software program used ...
... Ann Stunden, director of the Division of Information Technology ... 2005 award for information technology leadership from the national ... for "strong and ground-breaking leadership in the information technology ... ago." , ,A co-founder and executive director of ...
Cached Biology Technology:Education conference focusing on importance of integrating technology 2Education conference focusing on importance of integrating technology 3Education conference focusing on importance of integrating technology 4
Human Serum FDA Licensed US Donor Centers Sterile / Non-sterile: Sterile Filtered to 0.2 micron Information: Extensive Viral Testing ...
Normal human AB serum, pooled...
Human alpha-1-antitrypsin. No cross-reactivity with alpha-1-acid glycoprotein, serum albumin or other serum proteins....
Human/Mouse/Rat JNK Pan Specific Affinity Purified PAb...
Biology Products: