[meteorite-list] Diamino Acids Found For The First Time In A Meteorite (M...

From: MeteorHntr_at_aol.com <MeteorHntr_at_meteoritecentral.com>
Date: Thu Jun 10 18:44:49 2004
Message-ID: <1ab.256139bb.2dfa3e5b_at_aol.com>

Hey List,

So how many Amino acids have been found in Murchison plus these 7 Diamino
Acids?

I do have some small Murchison slices if anyone is interested in getting
their recomended daily allowance of Amino and Diamino Acids! If so, email me off
list.

Thanks,
Steve Arnold
Arkansas

========Original Message========
Subj: [meteorite-list] Diamino Acids Found For The First Time In A
Meteorite (Murchison Meteorite)
 Date: 6/10/2004 4:53:54 PM Central Standard Time
 From: baalke_at_zagami.jpl.nasa.gov
 To: meteorite-list_at_meteoritecentral.com
 Sent from the Internet (Details)
    




http://pubs.acs.org/cen/news/8223/8223earlyscicon.html

Diamino acids in meteorite
SARA DRAKE
Chemical &Engineering News
June 10, 2004
            
For the first time, diamino acids have been discovered in a
meteorite. Using gas chromatography and mass spectrometry, a
team led by Uwe J. Meierhenrich of the University of Bremen,
in Germany, has identified seven diamino acids-including D- and
L-2,3-diaminopropanoic acid, D- and L-2,4-diaminobutanoic acid,
3,3'-diaminoisobutanoic acid, 2,3-diaminobutanoic acid, and
4,4'-diaminoisopentanoic acid-in the Murchison chondritic
meteorite [Proc. Natl. Acad. Sci. USA, 101, 9182 (2004)].
Previously, researchers found individual amino acids in the
Murchison meteorite.

Amino acids arriving on Earth through similar avenues are
thought to have triggered life's beginnings. Diamino acids
may also have played a role in the development of life on
Earth. They are the backbone of peptide nucleic acid
materials thought to have preceded both RNA and DNA in
early life. This new work suggests that diamino acids had
extraterrestrial origins and may have arrived on Earth via
meteorites during prebiotic times.
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