Low-Temperature Heat Capacity and Glassy Behavior of Lysozyme Crystal†

摘要: Heat capacities of tetragonal hen egg-white lysozyme crystals containing different amounts water have been measured in the temperature region between 8 and 300 K. A broad glass transition was observed at about 150 K for with more than 24.0 wt % content. These also exhibited a spontaneous exothermic effect due to crystallization supercooled contained melting process above temperature. The 13.6 7.4 gave rise only 165 218 K, respectively. fully dried crystal showed no thermal anomaly up freezable unfreezable were estimated from enthalpies fusion water. content dependence magnitude excess heat capacity suggest that arises cooperative motion segments th...