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The role of metal ions in chemical evolution - Polymerization of alanine and glycine in a cation-exchanged clay environment (1979)

Levi, N. ; Lawless, J. G.

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Publication Date: 2011-08-17

Description: The effect of the exchangeable cation on the condensation of glycine and alanine was investigated using a series of homoionic bentonites. A cycling procedure of drying, warming and wetting was employed. Peptide bond formation was observed, and the effectiveness of metal ions to catalyze the condensation was Cu(2+) greater than Ni(2) approximately equals Zn(2+) greater than Na(+). Glycine showed 6% of the monomer incorporated into oligomers with the largest detected being the pentamer. Alanine showed less peptide bond formation (a maximum of 2%) and only the dimer was observed.

Keywords: SPACE BIOLOGY

Type: Journal of Molecular Evolution; 13; Nov. 197

Format: text

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