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Eleonora Cerasoli1, Belinda K Sharpe, Derek N Woolfson
1Department of Biochemistry, School of Life Sciences, University of Sussex, Falmer BN1 9QG, UK.
Journal of the American Chemical Society
|October 27, 2005
概括
研究人员通过合并蛋白质折叠图案设计了一种新的金属触发型变换器. 这种可逆开关,在三元体和单元体之间进行过渡,对生物传感器发展有希望.
科学领域:
- 生物化学 生物化学
- 蛋白质工程是指蛋白质工程.
- 分子生物学分子生物学
背景情况:
- 蛋白质的结构变化对于生物功能至关重要.
- 设计具有可切换结构的是一种重大挑战.
- 金属离子协调提供了一个调节蛋白质结构的触发器.
研究的目的:
- 在单个多中开发一种新的金属触发型变形开关.
- 为了合并一个alpha-helical卷轴-卷轴剪切器和一个结合的单体基因.
- 为潜在的生物传感器应用创建可逆系统.
主要方法:
- 体设计包含两个不同的蛋白质折叠图案.
- 溶液相光谱分析 (例如CD光谱).
- 沉积试验和结合研究以表征结构状态.
主要成果:
- 在一个序列中成功地将alpha-helical coiled-coil trimer和结合的单体基因合并为一个序列.
- 证实了两种形式的合作折叠.
- 在金属结合时,在trimer和单体状态之间可逆切换的演示.
结论:
- 这种新的设计方法成功地创建了一个金属触发的 conformational 开关.
- 证实了切换的可逆性质.
- 这种方法为开发基于的生物传感器提供了新的途径.
相关概念视频
Protein Folding
Overview
Protein Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
Ribozymes
The term ribozyme is used for RNA that can act as an enzyme. Ribozymes are mainly found in selected viruses, bacteria, plant organelles, and lower eukaryotes. Ribozymes were first discovered in 1982 when Tom Cech’s laboratory observed Group I introns acting as enzymes. This was shortly followed by the discovery of another ribozyme, Ribonulcease P, by Sid Altman’s laboratory. Both Cech and Altman received the Nobel Prize in chemistry in 1989 for their work on ribozymes.
Ribozymes can be...
Ribozymes can be...
Ribozymes
The term ribozyme is used for RNA that can act as an enzyme. Ribozymes are mainly found in selected viruses, bacteria, plant organelles, and lower eukaryotes. Ribozymes were first discovered in 1982 when Tom Cech’s laboratory observed Group I introns acting as enzymes. This was shortly followed by the discovery of another ribozyme, Ribonulcease P, by Sid Altman’s laboratory. Both Cech and Altman received the Nobel Prize in chemistry in 1989 for their work on ribozymes.
Ribozymes can be...
Ribozymes can be...
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 Complexes with Interchangeable Parts
Groups of proteins may form a complex where each protein in this complex has a different role in the overall execution of the complex’s function. Often some of the proteins in the complex can be replaced by a closely related variant to give a complex that contains many of the same components yet is functionally distinct.
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...
The SCF ubiquitin ligase is a protein complex of five individual proteins. This complex attaches ubiquitin to other target proteins to mark them for degradation. In order to...

