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:4/14/2016)... April 14, 2016 BioCatch ... Detection, today announced the appointment of Eyal Goldwerger ... role. Goldwerger,s leadership appointment comes at a ... of the deployment of its platform at several of ... technology, which discerns unique cognitive and physiological factors, is ...
(Date:3/31/2016)... 31, 2016   ... the "Company") LegacyXChange is excited to release ... soon to be launched online site for trading 100% ... ) will also provide potential shareholders a sense of ... to an industry that is notorious for fraud. The ...
(Date:3/29/2016)... 2016 LegacyXChange, Inc. (OTC: ... SelectaDNA/CSI Protect are pleased to announce our successful effort ... variety of writing instruments, ensuring athletes signatures against counterfeiting ... from athletes on LegacyXChange will be assured of ongoing ... Bill Bollander , CEO states, "By ...
Breaking Biology News(10 mins):
(Date:6/23/2016)... Calif. , June 23, 2016  Blueprint Bio, ... biological discoveries to the medical community, has closed its ... Matthew Nunez . "We have received ... with the capital we need to meet our current ... essentially provide us the runway to complete validation on ...
(Date:6/23/2016)... ... June 23, 2016 , ... ClinCapture, the only free ... and will showcase its product’s latest features from June 26 to June 30, ... poster on Disrupting Clinical Trials in The Cloud during the conference. DIA ...
(Date:6/23/2016)... FRANCISCO , June 22, 2016  Amgen (NASDAQ: ... sponsorship of the QB3@953 life sciences incubator ... human health. The shared laboratory space at QB3@953 was ... overcome a key obstacle for many early stage organizations ... part of the sponsorship, Amgen launched two "Amgen Golden ...
(Date:6/22/2016)... , June 22, 2016 Research and ... Global Markets" report to their offering. ... billion in 2014 from $29.3 billion in 2013. The market is ... of 13.8% from 2015 to 2020, increasing from $50.6 billion in ... projected product forecasts during the forecast period (2015 to 2020) are ...
Breaking Biology Technology: