Modulation of hydrophobic interactions by proximally immobilized ions

C. Derek Ma, Chenxuan Wang, Claribel Acevedo-Vélez, Samuel H. Gellman () and Nicholas L. Abbott ()
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C. Derek Ma: University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, USA
Chenxuan Wang: University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, USA
Claribel Acevedo-Vélez: University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, USA
Samuel H. Gellman: University of Wisconsin-Madison, 1101 University Avenue
Nicholas L. Abbott: University of Wisconsin-Madison, 1415 Engineering Drive, Madison, Wisconsin 53706, USA

Nature, 2015, vol. 517, issue 7534, 347-350

Abstract: Chemical force microscopy measurements show that the immobilization of specific cationic groups near non-polar domains produces pronounced changes in the domains’ hydrophobic interaction strengths: charged ammonium groups double interaction strengths, whereas guanidinium groups eliminate measurable interactions.

Date: 2015
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DOI: 10.1038/nature14018

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