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:10/15/2014)... Gauß-Allianz has admitted Johannes Gutenberg University Mainz (JGU) ... science hub continues to maintain a significant nationwide ... , "The acceptance of Johannes Gutenberg University Mainz ... a milestone in the national and international competition ... state of Rhineland-Palatinate can be proud that Mainz ...
(Date:10/15/2014)... SHELTON, Conn. , Oct. 15, 2014 NXT-ID, Inc. ... a biometric authentication company focused on the growing mobile commerce market ... NASDAQ MarketSite in Times Square on Monday October 13 th . ... with CTO David Tunnel and angel investor Mr. ... Gino Pereira , CEO of NXT-ID thanked his investors and employees ...
(Date:10/14/2014)... – Like discriminating thieves, prostate cancer tumors scavenge and ... body. But such avarice may be a fatal weakness. ... way to kill prostate cancer cells by delivering a ... destroys the diseased cells brimming with the mineral, leaving ... two drugs already commercially available for other uses, could ...
Breaking Biology News(10 mins):Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 2Johannes Gutenberg University Mainz joins Germany's Gauss-Allianz as a full member 3Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 2Photo Release: NXT-ID Inc. Rings Opening Bell of the NASDAQ Stock Market October 13th 3Prostate cancer's penchant for copper may be a fatal flaw 2
... UC San Diego have been honored by organizations for ... oceans. Postdoctoral researcher Octavio Aburto-Oropeza in Scripps, Marine ... and Conservation (CMBC) was selected to receive a Kathryn ... selected as the sole winner in a worldwide, merit-based ...
... -- The most robust statistical examination to date of our ... of all living humans -- confirms that she lived about ... a side-by-side comparison of 10 human genetic models that each ... set of assumptions about the way humans migrated, expanded and ...
... Philadelphia, PA, 17 August 2010 - Everyone is special ... view, no two humans are genetically identical. This means that ... less comm. on in the overall population. Some ... ,code, are missing entirely. These variants are likely to have ...
Cached Biology News:Scripps Oceanography biologists awarded prestigious honors 2Mother of all humans lived 200,000 years ago 2Mother of all humans lived 200,000 years ago 3Developmental problems: Some exist in the genes 2
(Date:10/19/2014)... The report "Chocolate, Cocoa Beans, Lecithin, Sugar and ... and Forecast (2011 - 2016)," analyzes the chocolate ... the major market drivers, restraints, and opportunities for the ... The global chocolate market is expected to grow from ... an estimated CAGR of 2.7% from 2011 to 2016. ...
(Date:10/18/2014)... The “Human Insulin Market- by Product ... Modern Human Insulin (Rapid Acting, Long Acting, Premixed)], ... Others) - Forecast to 2018” provides a detailed ... current market trends, and strategies impacting the global ... forecasts of the revenue and share analysis. , ...
(Date:10/18/2014)... 18, 2014 The Asia-Pacific hardware encryption ... in Asia-Pacific with analysis and forecast of revenue. This ... expected to reach $51,362.6 million by 2018, at a ... through the TOC of the Asia-Pacific hardware encryption market ... provided. This also provides a glimpse of the segmentation ...
(Date:10/18/2014)... According to a new market research ... - Global Trends & Forecasts up till 2017”, hydraulic ... 2011. This value is expected to increase from $40 ... 10% CAGR during the same period. North America is ... in terms of hydraulic horse power supplied by the ...
Breaking Biology Technology:Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 2Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 3Chocolate Market Projected To Reach $98.3 Billion by 2016 - New Report by MarketsandMarkets 4Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 2Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 3Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 4Medical Human Insulin Market Is Expected to Reach $42 billion by 2019 - New Research Report by MarketsandMarkets 5The Asia-Pacific hardware encryption display market is expected to reach $51,362.6 million by 2018 - New Report by MicroMarket Monitor 2The Asia-Pacific hardware encryption display market is expected to reach $51,362.6 million by 2018 - New Report by MicroMarket Monitor 3Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 2Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 3Hydraulic Fracturing Market Projected To Reach $64 Billion by 2017 - New Report by MarketsandMarkets 4
... More Effective Than rituximab ... in a Pre-Clinical ... announced today that ofatumumab (HuMax-CD20(R)) appeared more,effective at inducing complement ... a pre-clinical study. The CD20,antibodies were incubated with tumor cells ...
... YORK, Sept. 6 Globally, approximately 418 million,people ... danger, and costs of hepatitis in the 21st ... Hepatitis Strategies, a,new report by Kalorama Information. ... not,taking the necessary steps to contain hepatitis. Yet ...
... Globally, approximately 418 billion,people are currently infected with ... hepatitis in the 21st century cannot be,understated or ... by Kalorama Information. Paradoxically, despite the obvious ... to contain hepatitis. Yet the incidence and,prevalence of ...
Cached Biology Technology:Genmab Announces Encouraging Preclinical Data for ofatumumab 2Touching 418 Million Lives, Hepatitis Still Presents Significant Threat to Global Health 2Touching 418 Billion Lives, Hepatitis Still Presents Significant Threat to Global Health 2
...
...
...
... Anti-PRK2 MW 140kDa ... Immunogen Peptide spanning amino acids ... Purification immunoaffinity purified Quality ... RIPA lysates from HeLa cells. ...
Biology Products: