Amplification of enantiomeric concentrations under credible prebiotic conditions

被引：118

作者：

Breslow, Ronald ^{[1
]}

Levine, Mindy S. ^{[1
]}

机构：

[1] Columbia Univ, Dept Chem, New York, NY 10027 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2006年 / 103卷 / 35期

关键词：

amino acids; crystallization; transamination;

D O I：

10.1073/pnas.0605863103

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

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.

引用

页码：12979 / 12980

页数：2

共 6 条

[1] Partial transfer of enantioselective chiralities from α-methylated amino acids, known to be of meteoritic origin, into normal amino acids [J].