HOME >> BIOLOGY >> NEWS
Hitchhiking molecules could have survived fiery comet collisions with Earth, UC Berkeley experiment shows

Simulating a high-velocity comet collision with Earth, a team of scientists has shown that organic molecules hitchhiking aboard a comet could have survived such an impact and seeded life on this planet.

The results give credence to the theory that the raw materials for life came from space and were assembled on Earth into the ancestors of proteins and DNA.

"Our results suggest that the notion of organic compounds coming from outer space can't be ruled out because of the severity of the impact event," said research geologist Jennifer G. Blank of the Department of Earth and Planetary Science in the College of Letters & Science at the University of California, Berkeley.

Blank and her colleagues Randy Winans and Mike Ahrens of the Chemistry Division of Argonne National Laboratory, and engineer-mathematician Gregory Miller of the Applied Numerical Algorithms Group of Lawrence Berkeley National Laboratory, will report their preliminary findings on April 5 at the national meeting of the American Chemical Society in San Diego, Calif. The talk is part of an April 4-5 session on extraterrestrial organic chemistry organized by Blank and colleague Max P. Bernstein, a chemist in the Astrochemistry Laboratory at NASA Ames Research Center in California.

Blank's team shot a soda-can sized bullet into a nickel-sized metal target containing a teardrop of water mixed with amino acids, the building blocks of proteins. More than seventy varieties of amino acids have been found in meteorites - many the suspected cores of comets that smashed to earth - and are presumed to exist in interstellar dust clouds.

Not only did a good fraction of the amino acids survive the simulated comet collision, but many polymerized into chains of two, three and four amino acids, so-called peptides. Peptides with longer chains are called polypeptides, while even longer ones are called proteins.

"The neat thing is that we got every possible combination o
'"/>

Contact: Robert Sanders
rls@pa.urel.berkeley.edu
510-643-6998
University of California - Berkeley
5-Apr-2001


Page: 1 2 3 4

Related biology news :

1. Hitchhiking bacteria could compromise the detection of life on Mars
2. Tiny molecules have big potential as cancer drugs, Stanford researcher believes
3. Synthesized molecules studied as weapon to stop cell division in cancer cells
4. Scientists reinvent DNA as template to produce organic molecules
5. Sweet success in targeting sugar molecules to cells in living animals
6. UC Riverside researcher takes snapshots of the movement of molecules in a billionth of a second
7. Scientists pinpoint molecules that generate synapses
8. Two molecules work together to aid transport of immune cells, UT Southwestern researchers find
9. Controlling biomolecules with magnetic tweezers
10. Water molecules clump more loosely than previously thought
11. Creating polymers that act like biomolecules

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:5/16/2017)... N.J. , May 16, 2017  Veratad Technologies, ... provider of online age and identity verification solutions, announced ... K(NO)W Identity Conference 2017, May 15 thru May 17, ... Regan Building and International Trade Center. ... the globe and in today,s quickly evolving digital world, ...
(Date:5/6/2017)... , May 5, 2017 ... just announced a new breakthrough in biometric authentication ... exploits quantum mechanical properties to perform biometric authentication. These ... smart semiconductor material created by Ram Group and ... finance, entertainment, transportation, supply chains and security. Ram ...
(Date:4/19/2017)... York , April 19, 2017 ... as its vendor landscape is marked by the presence ... market is however held by five major players - ... Together these companies accounted for nearly 61% of the ... the leading companies in the global military biometrics market ...
Breaking Biology News(10 mins):
(Date:9/21/2017)... ... September 21, 2017 , ... ... who enable the world’s most progressive pharma and biotech organizations to do more ... top pharma and biotech events in Q4. , DrugDev will demonstrate DrugDev Spark™, ...
(Date:9/20/2017)... ... 2017 , ... The award-winning producers behind the American Farmer ... innovations aimed at helping farmers solve the problem of nitrogen loss. The upcoming ... 8:30aET on RFD-TV. Check your local listings for more info. , As ...
(Date:9/20/2017)... ... September 20, 2017 , ... ... of a study examining the effects of exoskeleton-assisted walking on gait parameters ... (SCI). The article, "Neuromechanical adaptations during a robotic powered exoskeleton assisted walking ...
(Date:9/19/2017)... ... 2017 , ... Participants of this educational webinar will learn ... with the advantages and disadvantages of ductless, filtered fume hoods, they will also ... , Attendees will learn from an industry expert about the different types of ...
Breaking Biology Technology:
Cached News: