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Science 23 March 1979:
Vol. 203. no. 4386, pp. 1243 - 1244
DOI: 10.1126/science.424749
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Articles

Science, Vol 203, Issue 4386, 1243-1244
Copyright © 1979 by American Association for the Advancement of Science

articles

L Amino acids and D-glucose bind stereospecifically to a colloidal clay

SC Bondy and ME Harrington

L-Leucine, L-aspartate, and D-glucose bind in a stereospecific manner to a colloidal clay, bentonite. This binding has high-affinity, saturable characteristics. The biologically uncommon enantiomers, D-leucine, D-asparatate, and L-glucose, do not exhibit any selective absorption on bentonite. It is suggested that this difference between stereoisomers could account for the evolution of life forms possessing a great preponderance of L amino acids and D-glucose.


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
Adsorption and discrimination of alanine and alanyl-alanine enantiomers by allophane.
H. HASHIZUME, B. K. G. THENG, and A. YAMAGISHI (2002)
Clay Minerals 37, 551-557
   Abstract »    Full Text »    PDF »
Origins of Chirality in Nature: A Reassessment of the Postulated Role of Bentonite.
J. B. YOUATT and R. D. BROWN (1981)
Science 212, 1145-1146
   Abstract »    PDF »
Stereospecific sorption of L amino acids by colloidal clay.
T. Jackson (1979)
Science 206, 483-484
   PDF »


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