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Pressure Induced Hydration Dynamics of Membranes

F. Osterberg·M. Kriechbaum·A. Polcyn·V. Skita·M. W. Tate·P. T. C. So·S. M. Gruner·Shyamsunder Erramilli
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Abstract

Pressure-jump initiated time-resolved x-ray diffraction studies of dynamics of the hydration of the hexagonal phase in biological membranes show that (i) the relaxation of the unit cell spacing is non-exponential in time; (ii) the Bragg peaks shift smoothly to their final positions without significant broadening or loss in crystalline order. This suggests that the hydration is not diffusion limited but occurs via a rather homogeneous swelling of the whole lattice, described by power law kinetics with an exponent $ β= 1.3 \pm 0.2$.

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F. Osterberg, M. Kriechbaum, A. Polcyn, V. Skita, M. W. Tate, P. T. C. So, S. M. Gruner, Shyamsunder Erramilli. 1993-10-28. Pressure Induced Hydration Dynamics of Membranes. https://doi.org/10.1103/physrevlett.72.2967

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