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相关概念视频

Molecular Chaperones and Protein Folding03:00

Molecular Chaperones and Protein Folding

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The native conformation of a protein is formed by interactions between the side chains of its constituent amino acids. When the amino acids cannot form these interactions, the protein cannot fold by itself and needs chaperones. Notably, chaperones do not relay any additional information required for the folding of polypeptides; the native conformation of a protein is determined solely by its amino acid sequence. Chaperones catalyze protein folding without being a part of the folded protein.
The...
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Molecular Chaperones and Protein Folding03:00

Molecular Chaperones and Protein Folding

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Induced-fit Model01:13

Induced-fit Model

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Most chemical reactions in cells require enzymes—biological catalysts that speed up the reaction without being consumed or permanently changed. They reduce the activation energy needed to convert the reactants into products. Enzymes are proteins, that usually work by binding to a substrate—a reactant molecule that they act upon.
Enzymes exhibit substrate specificity, meaning that they can only bind to certain substrates. This is mainly determined by the shape and chemical...
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相关实验视频

Updated: Mar 17, 2026

Studies of Chaperone-Cochaperone Interactions using Homogenous Bead-Based Assay
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Studies of Chaperone-Cochaperone Interactions using Homogenous Bead-Based Assay

Published on: July 21, 2021

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采用NMR信息分子建模捕获动态伴奏基质相互作用

Loïc Salmon1, Logan S Ahlstrom1,2, Scott Horowitz1

  • 1Department of Molecular, Cellular and Developmental Biology, and the Howard Hughes Medical Institute, University of Michigan , Ann Arbor, Michigan 48109, United States.

Journal of the American Chemical Society
|July 15, 2016
PubMed
概括
此摘要是机器生成的。

与免疫蛋白7 (Im7) 等基质进行动态相互作用,从而协助Spy等护卫蛋白进行蛋白折叠. 这项研究揭示了

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Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry
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Exploring Biomolecular Interaction Between the Molecular Chaperone Hsp90 and Its Client Protein Kinase Cdc37 using Field-Effect Biosensing Technology
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Exploring Biomolecular Interaction Between the Molecular Chaperone Hsp90 and Its Client Protein Kinase Cdc37 using Field-Effect Biosensing Technology

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相关实验视频

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Studies of Chaperone-Cochaperone Interactions using Homogenous Bead-Based Assay
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Defining Hsp33's Redox-regulated Chaperone Activity and Mapping Conformational Changes on Hsp33 Using Hydrogen-deuterium Exchange Mass Spectrometry
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Exploring Biomolecular Interaction Between the Molecular Chaperone Hsp90 and Its Client Protein Kinase Cdc37 using Field-Effect Biosensing Technology
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科学领域:

  • 生物化学和分子生物学
  • 结构生物学
  • 计算生物学

背景情况:

  • 通过防止蛋白质聚合和促进适当的蛋白质折叠,Chaperones对于维持蛋白质稳定至关重要.
  • 陪伴物影响基质构造动态的确切机制尚不完全理解.

研究的目的:

  • 在残留水平上阐明Spy和其基质免疫蛋白7 (Im7) 之间的动态相互作用.
  • 开发和验证一个计算方法,将NMR数据与模拟用于研究灵活的生物分子复合体.

主要方法:

  • 利用特定地点的核磁共振 (NMR) 数据来构建单个结合伙伴的系统特定力场.
  • 采用粗粒度分子模拟来建模伴奏基质复合动力学.
  • 对实验生物物理测量进行验证的模拟结果.

主要成果:

  • 模拟准确地复制了Spy-Im7复合体的试验结合数据.
  • 在结合时,Im7折叠伴随着减少的形状交换,而Spy的灵活区域则增强了与各种基质形状的相互作用.
  • 间使Im7在折叠状态下释放,平衡基质动态.

结论:

  • 综合性NMR和模拟方法提供了详细的,残留水平的动态伴侣基质相互作用的理解.
  • 这种策略为研究其他灵活的生物分子系统提供了可通用的平台.
  • 这些发现增强了我们对伴侣介导蛋白质折叠路径的理解.