Abstract
THE film technique permits us not only to examine the progress of chemical and enzyme reactions in monolayers but also to investigate mixed films, for example, lipo proteins, and the effects of injecting various reactants beneath monolayers. It has been found1 that the reactions of monolayers of lipoids such as cholesterol with substances injected into the substrate are dependent both on the nature of the polar group and on that of the hydrocarbon ‘tail’ of the injected reactant. Similar conclusions can be drawn as to the extent of reaction with monolayers of proteins. The possibilities in this case are somewhat more complex, for the protein monolayer must be regarded as a triplex system, the extended polypeptide chains separating an upper hydrophobic layer from a lower hydrophilic one, the latter containing the polar groups of the side chains of the protein.
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References
Schulman, J. H., and Rideal, E. K., Proc. Roy. Soc., B, 122, 29 (1937). Schulman, J. H., and Stenhagen, E., Proc. Roy. Soc., B, 126, 356 (1938). Schulman, J. H., Trans. Farad. Soc., 23, 1116 (1937). Marsden, J., and Schulman, J. H., Trans. Farad. Soc., 24, 749 (1938). Cockbain, E. G., and Schulman, J. H., Trans. Farad. Soc., 25, 716 (1939).
Dodds, Lawson and Campbell, NATURE, 142, 1121 (1938). Dodds, Golberg and Robinson, NATURE, 142, 34 (1938); 141, 247 (1938). Dodds and Lawson, NATURE, 139, 1068 (1937). We are indebted to Prof. Dodds and Dr. Lawson for specimens of these derivatives.
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RIDEAL, E., SCHULMAN, J. Reactions with Monolayers and their Biological Analogies. Nature 144, 100–102 (1939). https://doi.org/10.1038/144100a0
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DOI: https://doi.org/10.1038/144100a0
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