The effect of water dynamics on conformation changes of albumin in pre-denaturation state: photon correlation spectroscopy and simulation

N. Atamas, V. Bardik*, A. Bannikova, O. Grishina, E. Lugovskoi, S. Lavoryk, Y. Makogonenko, V. Korolovych, D. Nerukh

*Corresponding author for this work

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Abstract

Water is essential for protein three-dimensional structure, conformational dynamics, and activity. Human serum albumin (HSA) is one of major blood plasma proteins, and its functioning is fundamentally determined by the dynamics of surrounding water. The goal of this study is to link the conformational dynamics of albumin to the thermal motions in water taking place in the physiological temperature range. We report the results of photon correlation spectroscopy and molecular dynamics simulations of HSA in aqueous solution. The experimental data processing produced the temperature dependence of the HSA hydrodynamic radius and its zeta potential. Molecular dynamics reproduced the results of experiments and revealed changes in the secondary structure caused by the destruction of hydrogen bonds in the macromolecule's globule.
Original languageEnglish
JournalJournal of Molecular Liquids
VolumeIn press
Early online date7 Jan 2017
DOIs
Publication statusE-pub ahead of print - 7 Jan 2017

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© 2017, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/

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