相关实验视频

Updated: Jun 17, 2025

Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids

Characterization of pH-Dependent Reversible Self-Assembly of Amyloid Beta 1-40-Coated Gold Colloids

Published on: March 21, 2025

通过声音介导的粉样纤维的核和生长

Anna Kozell¹, Aleksei Solomonov¹, Roman Gaidarov²

¹Department of Molecular Chemistry and Materials Science, Weizmann Institute of Science, 7610001 Rehovot, Israel.

Proceedings of the National Academy of Sciences of the United States of America

|August 12, 2024

概括

低振幅超声波可以触发蛋白质重新折叠和来自单体的粉样纤维延长. 这些声音诱导的粉样蛋白结构与自然形成的结构相同,为蛋白质化学提供了新的可能性.

科学领域:

生物物理学的生物物理.
蛋白质化学蛋白质化学
材料科学材料科学材料科学

背景情况:

机械能量,如超声波,通过改变稳定性和折叠来影响蛋白质复合体.
了解超声波对粉样蛋白自我组合的影响至关重要,但有限.

研究的目的:

为了研究低振幅超声波对粉样蛋白蛋白自我组装的影响.
阐明超声波诱导的蛋白质重新折叠和纤维细胞形成的机制.

主要方法:

分子动力学 (MD) 模拟来观察蛋白质的重新折叠.
低振幅超声波对酶单体的受控应用.
溶液X射线散射分析形成的纳米纤维的结构.

主要成果:

低振幅超声波诱导蛋白质单体的重新折叠,通过压力和温度效应启动初级核形成.
超声波促进来自原生折叠的lyszyme的粉样蛋白纳米纤维的受控延长.
通过超声波形成的纳米纤维组合具有与自然形成的纤维相同的结构特征.

结论:

超声波可以作为一种工具来控制蛋白质自我组装途径.
声音能量为生物物理应用中操纵蛋白质结构提供了一种新的方法.
这项研究提供了关于在蛋白质化学中使用声能的基础见解.

关键词:

粉样蛋白是什么粉样蛋白纤维状蛋白自我组装的蛋白质分子动力学模拟,分子动力学模拟小角X射线散射的小角度X射线散射.超声波超声波是指超声波的使用.

更多相关视频

Rapid Generation of Amyloid from Native Proteins In vitro

Rapid Generation of Amyloid from Native Proteins In vitro

Published on: December 5, 2013

Generation of Alpha-Synuclein Preformed Fibrils from Monomers and Use In Vivo

Generation of Alpha-Synuclein Preformed Fibrils from Monomers and Use In Vivo

Published on: June 2, 2019

相关概念视频

Amyloid Fibrils

Amyloid Fibrils

Amyloid fibrils are aggregates of misfolded proteins. Under most circumstances, misfolded proteins are either refolded by chaperone proteins or degraded by the proteasome. However, in the case of a mutation or a disease, these proteins can accumulate to form large clusters and often further assemble to form elongated fibers, called fibrils.
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...