The possible role of metal ions and clays in prebiotic chemistryEight homoionic bentonites were prepared using alkali, alkaline earth, and transition metal ions as counterions. The interaction of the clays with 5'-AMP was studied and it was found that the alkali metal-substituted clays did not remove any nucleotide from dilute solution, and that zinc-bentonite adsorbed the most (98%). In addition, study of the interaction of seven other nucleotides with zinc-bentonite showed that the purine nucleotides were more strongly absorbed than the pyrimidine nucleotides. Langmuir isotherms were obtained for these systems and the adsorption data were explained by the adsorption coefficient and the accessibility of metal for binding.
Document ID
19800065890
Acquisition Source
Legacy CDMS
Document Type
Conference Proceedings
Authors
Lawless, J. G. (NASA Ames Research Center Extraterrestrial Research Div., Moffett Field, Calif., United States)
Edelson, E. H. (Southern California, University Los Angeles, Calif., United States)
Date Acquired
August 10, 2013
Publication Date
January 1, 1980
Subject Category
Space Biology
Meeting Information
Meeting: Life sciences and space research. Volume 18