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Updated: Jun 26, 2026

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4D Imaging of Protein Aggregation in Live Cells
Published on: April 5, 2013
基于结构的方法用于蛋白质折叠的光控制
Fuzhong Zhang1, Arash Zarrine-Afsar, M Sameer Al-Abdul-Wahid
1Department of Chemistry, University of Toronto, 80 Saint George Street, Toronto M5S 3H6 Canada.
Journal of the American Chemical Society
|January 28, 2009
概括
研究人员使用一种新的交叉链接器策略设计了可光切换的蛋白质. 这种方法可以通过光来远程控制蛋白质折叠和生物化学过程,为生物技术提供了新的途径.
科学领域:
- 生物化学 生物化学
- 蛋白质工程是指蛋白质工程.
- 生物技术是生物技术.
背景情况:
- 可光切换的蛋白质可以远程控制生物功能.
- 开发用于光感应蛋白活性的方法对于先进的生物化学应用至关重要.
研究的目的:
- 设计一种用于制造可光切换蛋白质的一般方法.
- 为了证明蛋白质折叠和展开的光控制,使用可光开关的内分子交叉链接器.
主要方法:
- 在FynSH3域中引入一对氨酸残留物,以创建特定的交叉链接站点.
- 使用可光切换的交叉链接器,其cis和trans同位素具有不同的长度偏好.
- 照射了蛋白质交叉链接系统,以便在折叠和展开状态之间切换.
主要成果:
- 引入了氨酸残留的FynSH3突变被交叉链接器的转变形式破坏了稳定,导致共存的折叠和展开状态.
- 照射到交叉连接器的cis同位素恢复了蛋白质的折叠,活性状态.
- 在蛋白质折叠和展开状态之间展示了光触发的切换.
结论:
- 可切换交叉连接器的基于结构的设计是光控制球状蛋白折叠的可行策略.
- 这种方法为开发可光切换蛋白质的各种应用提供了可通用的方法.
- 为生物化学过程的远程调节提供了一个新的工具.
相关概念视频
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
Protein Folding
Overview
Molecular Chaperones and Protein Folding
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...
The...
Molecular Chaperones and Protein Folding
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...
The...
Protein Organization
Proteins are polymers of amino acid residues. They are versatile and responsible for different cellular functions, including DNA replication, molecular transport, catalysis, and structural support. Proteins have a hierarchical structure comprising at least three levels of organization: primary, secondary, and tertiary structure. Some large proteins have a quaternary structure where individual protein subunits are linked together.
The primary structure of a protein is its amino acid sequence.
The primary structure of a protein is its amino acid sequence.

