相关实验视频
Updated: Jun 12, 2026

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Microfluidic Mixers for Studying Protein Folding
Published on: April 10, 2012
蛋白质的折叠合作性是由其链形拓控制的
Elizabeth A Shank1, Ciro Cecconi, Jesse W Dill
1Department of Molecular & Cell Biology, University of California, Berkeley, California 94720, USA.
Nature
|May 25, 2010
概括
蛋白质拓学决定了结构域如何沟通,影响折叠合作性. 这种理解可能解释了蛋白质如何避免错误折叠和动力陷.
科学领域:
- 生物物理学的生物物理.
- 结构生物学 结构生物学
- 蛋白质折叠 蛋白质的折叠
背景情况:
- 蛋白质具有模块化架构,具有功能至关重要的独特域.
- 蛋白质域之间的通信对于催化,调节和适当的折叠至关重要.
- 破坏的域通信与蛋白质错折的病理有关.
研究的目的:
- 研究蛋白质拓如何影响域间的通信和折叠合作.
- 了解不同结构区域在机械展开过程中的能量贡献.
- 探索拓组织与蛋白质折叠景观之间的关系.
主要方法:
- 使用单分子光学子来选择性地展开T4溶酶的区域.
- 应用了克鲁克斯的波动定理来确定机械展开过程中的自由能量变化.
- 分析了拓变量 (循环变量),以评估序列组织的影响.
主要成果:
- 蛋白质的拓组织极大地影响了域之间的折叠合作性.
- 沿着多链的结构元素的顺序影响了域间的通信.
- 机械展开实验揭示了基于拓学的独特的折叠/展开景观.
结论:
- 蛋白质拓在管理域通信和折叠合作性方面发挥着关键作用.
- 特定的蛋白质拓可以在进化过程中被选择来增强域合.
- 优化拓可以帮助蛋白质避免动力陷,减少错误折叠的风险.
相关概念视频
Protein Folding
Overview
Protein Folding
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...
Protein Folding
Overview
Cooperative Allosteric Transitions
Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
Cooperative Allosteric Transitions
Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...
Cooperative Allosteric Transitions
Cooperative allosteric transitions can occur in multimeric proteins, where each subunit of the protein has its own ligand-binding site. When a ligand binds to any of these subunits, it triggers a conformational change that affects the binding sites in the other subunits; this can change the affinity of the other sites for their respective ligands. The ability of the protein to change the shape of its binding site is attributed to the presence of a mix of flexible and stable segments in the...

