Study of phase transition in tetragonal lysozyme crystals by AC-nanocalorimetry

被引：7
|
作者：
Svanidze, Anna V. [1 ,2 ]
Huth, Heiko [2 ]
Lushnikov, Sergey G. [1 ]
Schick, Christoph [2 ]
机构：
[1] AF Ioffe Phys Tech Inst, St Petersburg 194021, Russia
[2] Univ Rostock, Inst Phys, D-18051 Rostock, Germany
来源：
THERMOCHIMICA ACTA | 2012年 / 544卷
关键词：
Lysozyme crystal; Phase transition; Heat capacity; Ac-nanocalorimetry; EGG-WHITE LYSOZYME; GLASS-TRANSITION; X-RAY; CHIP CALORIMETER; HYDRATION SHELL; RIBONUCLEASE-A; HEAT-CAPACITY; HUMIDITY; PROTEINS;
D O I：
10.1016/j.tca.2012.06.013
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Differential ac-nanocalorimetric studies of a structural phase transition in the vicinity of 306 K in tetragonal lysozyme crystals have been carried out. It was found that the anomalies in the temperature dependences of heat capacity of the crystals look like gimel-type anomalies. On the other hand, a pronounced temperature hysteresis has been observed at temperature cycling. The variation of experimental conditions such as relative humidity, frequency of the AC heat flow applied to the crystal of the order of 10 Hz, and heating rate seem not to affect the temperature of the anomaly in C-p(T). Crown Copyright (c) 2012 Published by Elsevier B.V. All rights reserved.
引用
收藏
页码：33 / 37
页数：5
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