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:4/3/2017)... 3, 2017  Data captured by IsoCode, ... detected a statistically significant association between the ... treatment and objective response of cancer patients ... predict whether cancer patients will respond to ... well as to improve both pre-infusion potency testing ...
(Date:3/29/2017)... 29, 2017  higi, the health IT company that ... North America , today announced a Series B ... of EveryMove. The new investment and acquisition accelerates higi,s ... to transform population health activities through the collection and ... higi collects and secures data today on behalf ...
(Date:3/24/2017)... 24, 2017 Research and Markets has announced ... Analysis & Trends - Industry Forecast to 2025" report to ... The ... a CAGR of around 15.1% over the next decade to reach ... analyzes the market estimates and forecasts for all the given segments ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... ... October 11, 2017 , ... Disappearing forests and increased emissions ... over 5.5 million people each year. Especially those living in larger cities are affected ... based in one of the most pollution-affected countries globally - decided to take action. ...
(Date:10/10/2017)... ... 2017 , ... For the second time in three years, ... Award. Representatives of the FirstHand program travelled to Washington, D.C. Tuesday, October 10th, ... mission is to change the trajectory of STEM education in America by dramatically ...
(Date:10/10/2017)... PA (PRWEB) , ... October 10, 2017 , ... ... year’s recipients of 13 prestigious awards honoring scientists who have ... presented in a scheduled symposium during Pittcon 2018, the world’s leading conference and ...
(Date:10/9/2017)... San Antonio, Texas (PRWEB) , ... ... ... a new study published on October 5, 2017, in the medical journal, ... demonstrated equivalence with the gold standard, video EEG, in detecting generalized tonic-clonic ...
Breaking Biology Technology: