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. 1976 May;16(5):471-80.
doi: 10.1016/S0006-3495(76)85702-5.

Temperature dependency of the rate of electron transport as a monitor of protein motion

B J Hales

Temperature dependency of the rate of electron transport as a monitor of protein motion

B J Hales. Biophys J. 1976 May.

Abstract

The temperature dependency of the rate of biological electron transport is interpreted as evolving from a contraction of the electron transport components. A theoretical expression for this temperature dependency is derived in terms of the coefficient of linear expansion (a) of the protein components. Using this expression alpha is calculated for several electron transport systems and shown to be similar to alpha-values of synthetic polymers. A discontinuity in alpha is shown to be present in all biological electron transport reactions at ca. 150 K. This discontinuity is interpreted as a change in the intramolecular bonding of the electron transport protein units.

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