Navigation Links
'Ancestral Eve' crystal may explain origin of life's left-handedness
Date:4/21/2010

Scientists are reporting discovery of what may be the "ancestral Eve" crystal that billions of years ago gave life on Earth its curious and exclusive preference for so-called left-handed amino acids. Those building blocks of proteins come in two forms left- and right-handed that mirror each other like a pair of hands. Their study, which may help resolve one of the most perplexing mysteries about the origin of life, is in ACS' Crystal Growth & Design, a bi-monthly journal.

Tu Lee and Yu Kun Lin point out that conditions on the primordial Earth held an equal chance of forming the same amounts of left-handed and right-handed amino acids. Nevertheless, when the first forms of life emerged more than 3 billion years ago, all the amino acids in the proteins had the left-handed configuration. That pattern continued right up to modern plants and animals.

The scientists used mixtures of both left- and right-handed aspartic acid (an amino acid) in laboratory experiments to see how temperature and other conditions affected formation of crystals of the material. They found that under conditions that could have existed on primitive Earth, left-handed aspartic acid crystals could have formed easily and on a large scale. "The aspartic acid crystal would then truly become a single mother crystal: an ancestral Eve for the whole left-handed population," the article notes.


'/>"/>

Contact: Michael Bernstein
m_bernstein@acs.org
202-872-6042
American Chemical Society
Source:Eurekalert  

Page: 1

Related biology news :

1. Genetic ancestral testing cannot deliver on its promise, study warns
2. Clues to ancestral origin of placenta emerge in Stanford study
3. Thumbs up -- a tiny ancestral remnant lends developmental edge to humans
4. Ancestral genome of present-day African great apes & humans had burst of DNA sequence duplication
5. Native Americans descended from a single ancestral group, DNA study confirms
6. Researchers develop liquid crystal pharmaceuticals to fight cancer and other diseases
7. Unveiling the structure of microcrystals
8. Liquid crystal phases of tiny DNA molecules point up new scenario for first life on Earth
9. Scientists find missing evolutionary link using tiny fungus crystal
10. New clues to how proteins dissolve and crystallize
11. Crystal (eye) ball: Study says visual system equipped with future seeing powers
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
'Ancestral Eve' crystal may explain origin of life's left-handedness
(Date:4/19/2017)... ALBANY, New York , April 19, 2017 /PRNewswire/ ... highly competitive, as its vendor landscape is marked by ... in the market is however held by five major ... and Safran. Together these companies accounted for nearly 61% ... majority of the leading companies in the global military ...
(Date:4/13/2017)... PUNE, India , April 13, 2017 According ... Identity Proofing, Identity Authentication, Identity Analytics, Identity Administration, and Authorization), Service, Authentication ... by MarketsandMarkets™, the IAM Market is expected to grow from USD 14.30 ... Annual Growth Rate (CAGR) of 17.3%. ... ...
(Date:4/11/2017)... NXT-ID, Inc. (NASDAQ:   NXTD ) ... appointment of independent Directors Mr. Robin D. Richards ... Directors, furthering the company,s corporate governance and expertise. ... Gino Pereira , Chief Executive ... their guidance and benefiting from their considerable expertise as we ...
Breaking Biology News(10 mins):
(Date:6/22/2017)... ... June 22, 2017 , ... The first human cell line HeLa, established in ... data on cross-contamination of human cell lines with HeLa cells were published. Until recently, ... culture labs and is associated with dramatic consequences for research. , In this ...
(Date:6/20/2017)... ... June 20, 2017 , ... Biologist Dawn Maslar MS has found a biomarker ... Men Chase, Women Choose: The Neuroscience of Meeting, Dating, Losing Your Mind, and Finding ... men. ”The logical next step, in my estimation, was to scientifically track the evidence ...
(Date:6/20/2017)... ... June 20, 2017 , ... Do More with OHAUS , With ... a trusted supplier in the weighing industry, to extending its expertise across the entire ... reactions, immunoassays, hybridizations and more, allowing for its customers to 'Do More' ...
(Date:6/19/2017)... ... June 19, 2017 , ... Tunnell Consulting has been solving ... of the biggest challenges faced by life sciences, biotech and pharmaceuticals companies today is ... Kati Abraham , who is well known in the industry and brings significant ...
Breaking Biology Technology: