离子液体抑制了酸中α-螺旋到β-板的动态过渡
Ju Liu1,2, Yanlei Wang1,2, Feng Huo1,3
1Beijing Key Laboratory of Ionic Liquids Clean Process, State Key Laboratory of Mesoscience and Engineering, CAS Key Laboratory of Green Process and Engineering, Institute of Process Engineering, Chinese Academy of Sciences, Beijing 100190, China.
Fundamental research
|August 19, 2024
概括
离子液体 (ILs) 通过在中插入子来抑制与神经退行性疾病相关的聚合. 集群IL离子表现出比自由离子更强的抑制,有助于向治疗的发展.
科学领域:
- 生物物理学的生物物理.
- 计算化学的计算化学
- 神经科学是一个神经科学.
背景情况:
- 蛋白质错误折叠和聚合,特别是α-螺旋到β-片 (α-β) 过渡,与阿尔茨海默氏症和帕金森症等神经退行性疾病有关.
- 离子液体 (ILs) 由于其生物活性和可调节性质,对向治疗具有前景,但其调节蛋白质结构的机制尚未完全理解.
研究的目的:
- 研究离子液体 (ILs) 影响酸中的α-β转换的分子机制.
- 探索IL离子结构和聚合状态在调节形状变化的作用.
主要方法:
- 用GPU加速的微秒分子动力学模拟来观察α-β转变的动力学.
- 使用相关性分析和机器学习来识别影响过渡的关键因素,并构建预测模型.
主要成果:
- 离子液态酸盐,特别是1-基-3-甲基利米达化 ([Cnmim]Cl),以自由离子或集群的形式自发地插入.
- IL离子插入显著抑制α-β过渡,集群显示出比自由离子更大的有效性.
- [C10mim]+和[C12mim]+的最大β-片含量分别减少了18.5%和44.9%.
结论:
- 这项研究阐明了ILs抑制α-β转换的机制,突出了阴离子插入和聚合的重要性.
- 开发了一个预测模型,为潜在的治疗应用提供了对ILs结构-活性关系的见解.
- 这些发现为开发基于IL的治疗与蛋白质错折相关的神经退行性疾病提供了定量基础.
相关概念视频
Protein Folding
7.9K
Proteins are chains of amino acids linked together by peptide bonds. Upon synthesis, a protein folds into a three-dimensional conformation, critical to its biological function. Interactions between its constituent amino acids guide protein folding, and hence the protein structure is primarily dependent on its amino acid sequence.
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
Protein Structure Is Critical to Its Biological Function
Proteins perform a wide range of biological functions such as catalyzing chemical reactions, providing...
7.9K
Amyloid Fibrils
9.3K
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,...
Amyloid deposits were observed as early as 1639 in the liver and the spleen. In 1854, Rudolph Virchow performed iodine staining,...
9.3K
Protein and Protein Structure
79.2K
Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme...
A protein's shape is critical to its function. For example, an enzyme...
79.2K
Protein Organization
137.1K
Overview
137.1K
Intrinsically Disordered Proteins
17.7K
Intrinsically disordered proteins are a group of proteins that do not fold into specific three-dimensional structures. Their structural flexibility allows them to complement ordered proteins to perform functions that are inaccessible to rigid structures. They are more common in eukaryotes than prokaryotes and may either be exclusively intrinsically disordered or hybrid proteins, consisting of a mix of ordered and disordered regions. The absence of a rigid structure in these proteins can be...
17.7K
Peptide Bonds
73.9K
A peptide bond covalently attaches amino acids through a dehydration reaction. One amino acid's carboxyl group and another amino acid's amino group combine, releasing a water molecule. The resulting bond is the peptide bond. The products that such linkages form are peptides. As more amino acids join this growing chain, the resulting chain is a polypeptide. Each polypeptide has a free amino group at one end. This end has the N-terminal, or the amino-terminal, and the other end has a free...
73.9K


