Dynamics of Protein Hydration Water

Abstract

We present the frequency- and temperature-dependent dielectric properties of lysozyme solutions in a broad concentration regime, measured at subzero temperatures and compare the results with measurements above the freezing point of water and on hydrated lysozyme powder. Our experiments allow examining the dynamics of unfreezable hydration water in a broad temperature range including the so-called No Man's Land (160 - 235 K). The obtained results prove the bimodality of the hydration shell dynamics and are discussed in the context of the highly-debated fragile-to-strong transition of water.

5 pages, 3 figures

References in corpus (6)

• Observation of Fragile-to-Strong Dynamic Crossover in Protein Hydration Water
• Electrode Polarization Effects in Broadband Dielectric Spectroscopy
• Broadband Dielectric Spectroscopy on Human Blood
• Relaxation dynamics of a protein solution investigated by dielectric spectroscopy
• On the origins of apparent fragile-to-strong transition of protein hydration waters
• High-frequency dynamics of type-B glass formers investigated by broadband dielectric spectroscopy

Cited by in corpus (3)

• High-Precision Megahertz-to-Terahertz Dielectric Spectroscopy of Protein Collective Motions and Hydration Dynamics
• Local and Global Expansivity in Water
• Exploring water's no-man's land