Glassy water at cryogenic temperatures

Glassy water at cryogenic temperatures

For decades, physicists, physical chemists, and biologists have been tremendously intrigued by the unusual thermodynamic and kinetic properties of supercooled water. Theories have been proposed to account for the properties but these theories remain contentious for lack of experimental evidence. We investigate phase behaviors of water at cryogenic temperatures, especially high-density amorphous (HDA) ice and its glass-to-cryogenic liquid transition. The results will provide new insight into the physical origin of the anomalous properties of supercooled water.

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Biophysical study on protein function and dynamics

Biophysical study on protein function and dynamics

Protein crystals used in X-ray protein crystallography have properties that distinguish them from typical inorganic crystals. An important difference is that protein crystals contain internal water, typically comprising 40 to 60 % of the volume of the crystal. This internal water forms solvent channels inside protein crystals and fills the significant void volume between the folded protein molecules that compose the crystal. We investigate the protein-water interactions inside protein crystals using X-ray diffraction. The results will shed light on the physical origin of protein dynamics in relation to water-protein interactions.

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(Korean Article) 

고압력 X-선 단백질 결정학

한국물리학회 물리학과 첨단기술

2015년 9월 제24권 9호 수록

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