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:1/20/2016)... , Jan. 20, 2016   MedNet Solutions ... the entire spectrum of clinical research, is pleased to ... MedNet,s significant achievements are the result of the company,s ... iMedNet eClinical , it,s comprehensive, easy-to-use and ... --> Key MedNet growth achievements in ...
(Date:1/18/2016)... Jan. 18, 2016  Extenua Inc., a pioneering ... the use and access of ubiquitous on-premise and ... with American Cyber.  ... leading transformational C4ISR and Cyber initiatives in support ... latest proven technology solutions," said Steve Visconti ...
(Date:1/13/2016)... ALBANY, New York , January 13, 2016 /PRNewswire/ ... Transparency Market Research has published a new market report ... Share, Growth, Trends, and Forecast, 2015 - 2023. According to ... mn in 2014 and is anticipated to reach US$1,625.8 ... from 2015 to 2023. In terms of volume, the ...
Breaking Biology News(10 mins):
(Date:2/11/2016)... BEACH, Florida , February 11, 2016 /PRNewswire/ ... PositiveID Corporation ("PositiveID" or "Company") (OTCQB: PSID), ... diagnostics, announced today that its Thermomedics subsidiary, which ... progress on its growth plan in January 2016, ... products distributors, increasing sequential monthly sales growth, and ...
(Date:2/10/2016)... , Febr. 10, 2016 /PRNewswire/ - BioAmber Inc. (NYSE: ... pleased to announce that Mitsui & Co. Ltd., its ... succinic acid plant, is investing an additional CDN$25 million ... increasing its stake from 30% to 40%.  Mitsui will ... bio-succinic acid produced in Sarnia , ...
(Date:2/10/2016)... , ... February 10, 2016 ... ... today announced that it has joined the Human Vaccines Project, a public-private ... diseases and cancer. , The Human Vaccines Project brings together leading ...
(Date:2/10/2016)... Springfield, MO (PRWEB) , ... February 10, 2016 ... ... company, will attend the International Society of Pharmaceutical Engineering (ISPE) Rocky Mountain Chapter ... of ISPE is expecting to fill more than 100 tables for its annual ...
Breaking Biology Technology: