Role of Metal Oxides in Chemical Evolution: Interaction of Ribose Nucleotides with Alumina

Details Role of Metal Oxides in Chemical Evolution: Interaction of Ribose Nucleotides with Alumina Role of Metal Oxides in Chemical Evolution: Interaction of Ribose Nucleotides with Alumina

Mar 2009

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009asbio...9..165a&link_type=abstract

Astrobiology, Volume 9, Issue 2, pp. 165-171.

Biology

4

Chemical Evolution, Origin Of Life, Metal Oxides, Alumina, Ribonucleotides

Scientific paper

Interaction of ribonucleotides—namely, 5′-AMP, 5′-GMP, 5′-CMP, and 5′-UMP—with acidic, neutral, and basic alumina has been studied. Purine nucleotides showed higher adsorption on alumina in comparison with pyrimidine nucleotides under acidic conditions. Adsorption data obtained followed Langmuir adsorption isotherm, and Xm and KL values were calculated. On the basis of infrared spectral studies of ribonucleotides, alumina, and ribonucleotide-alumina adducts, we propose that the nitrogen base and phosphate moiety of the ribonucleotides interact with the positive charge surface of alumina. Results of the present study may indicate the importance of alumina in concentrating organic molecules from dilute aqueous solutions in primeval seas in the course of chemical evolution on Earth.

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