Extraterrestrial Handedness?-Reference-Cited by-同舟云学术

Extraterrestrial Handedness?

Published:1997-02-14 Issue:5302 Volume:275 Page:942-943
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Bada Jeffrey L.¹

Affiliation:

1. The author is at Scripps Institution of Oceanography, University of California at San Diego, La Jolla, CA, 92093-0212, USA.

Abstract

Biological systems exhibit molecular handedness: During biosynthesis, predominantly L amino acids rather than D amino acids are incorporated into proteins. The origins of this handedness remain puzzling. In his Perspective, Bada discusses results reported by Cronin and Pizzarello in the same issue (p. 951 ) showing a slight excess of L amino acids in a well-known extraterrestrial object, the Murchison meteorite. This finding suggests the existence of an enrichment process in cosmochemical environments and could possibly be the source of molecular handedness on Earth.

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

Reference14 articles.

1. For example see J. L. Bada Nature 374 594 (1995)

2. D. B. Cline Ed. Physical Origin of Homochirality in Life (American Institute of Physics New York 1996) and references therein. [HN6].

3. Kvenvolden K. et al. Nature 228 923 (1970);

4. Kvenvolden K. , Lawless J. G. , Ponnamperuma C., Proc. Natl. Acad. Sci. U.S.A. 68, 486 (1971);

5. Pollack G. E. , Cheng C. , Kvenvolden K. A., Geochim. Cosmochim. Acta 39, 1571 (1975).

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