Mar 2008
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2008ssrv..135..187b&link_type=abstract
Space Science Reviews, Volume 135, Issue 1-4, pp. 187-201
Biology
6
Homochirality, Origin Of Life, Absolute Enantioselection, Mirror Symmetry Breaking
Scientific paper
Chirality, meaning handedness, pervades much of modern science, from the physics of elementary particles to the chemistry of life. The amino acids and sugars from which the central molecules of life—proteins and nucleic acids—are constructed exhibit homochirality, which is expected to be a key biosignature in astrobiology. This article provides a brief review of molecular chirality and its significance for the detection of extant or extinct life on other worlds. Fundamental symmetry aspects are emphasized since these bring intrinsic physical properties of the universe to bear on the problem of the origin and role of homochirality in the living world.
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