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The question of the possible asymmetric polymerization of aspartic acid on kaolinite

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Summary

We have been unable to confirm the recent report that kaolinite catalyzes the polymerization of aqueousd- andl-aspartic acid at different rates. In experiments wheredl-Asp was used, no induced optical rotation was found in the reaction solution. No evidence for polymer (or other product) formation was found whenl-Asp-2-14C was used, and products were searched by paper chromatography and X-ray film autoradiography. Asp is adsorbed by kaolinite, but no selectivity for one or the other enantiomer was observed.

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Authors and Affiliations

  1. Laboratory of Chemical Biodynamics, Lawrence Berkeley Laboratory, University of California, 94720, Berkeley, California, USA

    John J. McCullough & Richard M. Lemmon

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  1. John J. McCullough
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  2. Richard M. Lemmon
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On leave from Chemistry Department McMaster University Hamilton, Ontario, Canada

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McCullough, J.J., Lemmon, R.M. The question of the possible asymmetric polymerization of aspartic acid on kaolinite. J Mol Evol 3, 57–61 (1974). https://doi.org/10.1007/BF01795976

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