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Proc Natl Acad Sci U S A. 2006 Aug 29;103(35):12979-80. Epub 2006 Aug 22.

Amplification of enantiomeric concentrations under credible prebiotic conditions.

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1
Department of Chemistry, Columbia University, New York, NY 10027, USA. rb33@columbia.edu

Abstract

Solutions with as little as 1% enantiomeric excess (ee) of D- or L-phenylalanine are amplified to 90% ee (a 95/5 ratio) by two successive evaporations to precipitate the racemate. Such a process on the prebiotic earth could lead to a mechanism by which meteoritic chiral alpha-alkyl amino acids could form solutions with high ee values that were needed for the beginning of biology.

PMID:
16938839
PMCID:
PMC1559738
DOI:
10.1073/pnas.0605863103
[Indexed for MEDLINE]
Free PMC Article
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