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Chem Commun (Camb). 2004 Oct 7;(19):2146-7. Epub 2004 Sep 7.

Racemic D,L-asparagine causes enantiomeric excess of other coexisting racemic D,L-amino acids during recrystallization: a hypothesis accounting for the origin of L-amino acids in the biosphere.

Author information

1
Department of Food Science and Nutrition, Nara Women's University, Nara 630-8506, Japan. kojo@cc.nara-wu.ac.jp

Abstract

When recrystallizations were performed using a mixture of 12 D,L-amino acids (alanine, aspartic acid, arginine, glutamic acid, glutamine, histidine, leucine, methionine, serine, valine, phenylalanine, and tyrosine) with excess D,L-asparagine, all amino acids with the same configuration as asparagine were preferentially co-crystallized, indicating that it is the nature of a mixture of racemic amino acids to produce a spontaneous high enantiomeric excess.

PMID:
15467844
DOI:
10.1039/b409941a
[Indexed for MEDLINE]

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