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Adiabatic Compressibility of Globular Proteins

B. Gavish, E. Gratton and C. J. Hardy
Proceedings of the National Academy of Sciences of the United States of America
Vol. 80, No. 3, [Part 1: Biological Sciences] (Feb. 1, 1983), pp. 750-754
Stable URL: http://www.jstor.org/stable/13748
Page Count: 5
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Adiabatic Compressibility of Globular Proteins
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Abstract

The adiabatic compressibility of several globular proteins has been measured by using an ultrasonic technique in the frequency range 0.5 to 10 MHz. The contributions to the measured compressibility from the protein matrix and from surface processes involving ionization of side chains and solvation effects are discussed. The internal protein compressibility is very low, indicating the existence of ``dynamic domains'' which are tentatively assigned to secondary structure elements.

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