A origem da homoquiralidade biológica

quinta-feira, abril 01, 2010

Cold Springs Harbor Perspectives in Biology

The Origin of Biological Homochirality

Donna G. Blackmond

-Author Affiliations
Department of Chemistry, The Scripps Research Institute, La Jolla, California 92037
Correspondence:blackmond@scripps.edu

Abstract

The single-handedness of biological molecules has fascinated scientists and laymen alike since Pasteur's first painstaking separation of the enantiomorphic crystals of a tartrate salt more than 150 yr ago. More recently, a number of theoretical and experimental investigations have helped to delineate models for how one enantiomer might have come to dominate over the other from what presumably was a racemic prebiotic world. This article highlights mechanisms for enantioenrichment that include either chemical or physical processes, or a combination of both. The scientific driving force for this work arises from an interest in understanding the origin of life, because the homochirality of biological molecules is a signature of life.

Copyright © 2010 Cold Spring Harbor Laboratory Press; all rights reserved

+++++