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首页> 外文期刊>Crystallography reports >Some properties of the solvent in monoclinic lysozyme crystals
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Some properties of the solvent in monoclinic lysozyme crystals

机译：单斜溶菌酶晶体中溶剂的某些性质

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摘要

Study by the luminescent-probe (Eu3+) method has demonstrated that water in monoclinic lysozyme crystals is readily exchanged with water from the environment. Molecules of certain organic molecules about 2 nm in size equally readily penetrate into crystals. The state of water directly surrounding protein molecules both in the protein solution and crystals differs from the state of other water molecules. The percentage of water molecules of the former type is higher in crystals than in solution. Water was found to be removed in two steps during crystal drying. The weight loss of samples upon storage at a constant temperature of ～30°C under nitrogen for 3 h is about 24%. Heating of crystals, which were dried under the above-mentioned conditions, led to the additional loss of 2.1 wt % of water. Therefore, the total water content in crystals is ～26 wt %.
机译：通过发光探针（Eu3 +）方法的研究表明，单斜溶菌酶晶体中的水很容易与环境中的水交换。大小约为2 nm的某些有机分子的分子同样容易渗入晶体。蛋白质溶液和晶体中直接围绕蛋白质分子的水的状态不同于其他水分子的状态。前一种类型的水分子在晶体中的百分比高于溶液中的百分比。发现在晶体干燥期间分两步除去水。在〜30°C的恒定温度下于氮气中保存3小时后，样品的失重约为24％。在上述条件下干燥的晶体的加热导致另外损失2.1重量％的水。因此，晶体中的总水含量为〜26wt％。

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