Volume 43, Issue 48 pp. 6695-6699
Communication

Meteoritic Cα-Methylated α-Amino Acids and the Homochirality of Life: Searching for a Link

Marco Crisma Dr.

Marco Crisma Dr.

Institute of Biomolecular Chemistry, CNR and Department of Chemistry, University of Padova via Marzolo 1, 35131 Padova, Italy, Fax: (+39) 049-8275239

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Alessandro Moretto Dr.

Alessandro Moretto Dr.

Institute of Biomolecular Chemistry, CNR and Department of Chemistry, University of Padova via Marzolo 1, 35131 Padova, Italy, Fax: (+39) 049-8275239

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Fernando Formaggio Prof.

Fernando Formaggio Prof.

Institute of Biomolecular Chemistry, CNR and Department of Chemistry, University of Padova via Marzolo 1, 35131 Padova, Italy, Fax: (+39) 049-8275239

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Bernard Kaptein Dr.

Bernard Kaptein Dr.

DSM Research, Life Sciences, Advanced Synthesis and Catalysis, P.O. Box 18, 6160 MD Geleen, The Netherlands

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Quirinus B. Broxterman Dr.

Quirinus B. Broxterman Dr.

DSM Research, Life Sciences, Advanced Synthesis and Catalysis, P.O. Box 18, 6160 MD Geleen, The Netherlands

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Claudio Toniolo Prof.

Claudio Toniolo Prof.

Institute of Biomolecular Chemistry, CNR and Department of Chemistry, University of Padova via Marzolo 1, 35131 Padova, Italy, Fax: (+39) 049-8275239

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First published: 09 December 2004
Citations: 28

Graphical Abstract

Catch a falling star: Peptides from chiral, Cα-methylated α-amino acids (see scheme) found in L enantiomeric excess in meteorites show diastereoselectivity when reacting with racemic proteinogenic amino acids. Accordingly, the prebiotic soup of proteinogenic amino acids may have evolved into a chirally unbalanced system, eventually seeding the homochirality of life.

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