相关实验视频
Updated: Jul 17, 2026

11:41
Magnetic Tweezers for the Measurement of Twist and Torque
Published on: May 19, 2014
最小的振能量转移受体用于托
Jaap Broos1, Hendri H Pas, George T Robillard
1Department of Biochemistry and Groningen Biomolecular Science and Biotechnology Institute (GBB), University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands. J.Broos@chem.rug.nl
Journal of the American Chemical Society
|June 13, 2002
概括
这项研究引入了用于共振能量转移 (RET) 测量的迪亚齐林配体,使用托作为捐赠者. 这种新的方法在蛋白质化学中提供了准确的距离信息.
科学领域:
- 生物物理化学 生物物理化学
- 蛋白质科学 蛋白质科学
- 频谱学是一种光谱学.
背景情况:
- 共振能量转移 (RET) 是一种强大的技术,用于测量生物分子内的距离.
- 烯酸是一种多用途的内在化物,在RET研究中用作捐赠物.
- 迪亚齐林配体具有作为高效能接受器的潜力.
研究的目的:
- 评估作为RET距离测量的接受器的迪亚齐林配体的实用性.
- 在蛋白质科学中展示托-迪亚齐林供体-受体对的应用.
- 建立一种方法,在复杂的生物系统中获得准确的距离信息.
主要方法:
- 作为共振能量转移 (RET) 接受器,利用了迪亚齐林配体.
- 使用托及其类似物作为光谱捐赠剂.
- 研究了一种来自大肠杆菌的d-mannitol和mannitol载体 (EIImtl) 的单一三甲基突变的迪亚齐林衍生物.
- 应用Förster共振能量传输 (FRET) 原则来确定距离.
主要成果:
- 建立了用于RET测量的托-迪亚齐林捐赠者-接受者对.
- 确定了这个对的10 Å的福斯特距离.
- 证明能够测量高达17 Å的距离.
- 使用模型化合物和蛋白质系统验证了该方法.
结论:
- 迪亚齐林配体是有效的接受器,用于与托芬捐赠者进行RET距离测量.
- 迪亚齐林的小尺寸和二的光谱特性使它们成为蛋白质化学的有吸引力的对.
- 这种方法可以提供准确的RET距离信息,这对于了解蛋白质结构和功能至关重要.
相关概念视频
Potential Energy
The energy stored by a structure and location of matter in space is called potential energy. For instance, raising a kettlebell changes its spatial location and increases its potential energy. Similarly, a stretched rubber band contains potential energy which, under certain conditions, can be converted into other forms of energy, such as kinetic energy.
Chemical bonds that form attractive forces between atoms also contain potential energy, called chemical energy. When a chemical reaction...
Chemical bonds that form attractive forces between atoms also contain potential energy, called chemical energy. When a chemical reaction...
Energy to Drive Translocation
Mitochondrial protein import is powered by two distinct energy sources: ATP hydrolysis and electrochemical potential across the inner membrane. Newly synthesized precursors are bound by cytosolic chaperones of the Hsp70 family, which guide them to the import receptors on the mitochondrial surface. Utilizing the energy of ATP hydrolysis, Hsp70 chaperones transfer these precursors to the TOM receptors on the mitochondrial outer membrane.
Generally, polypeptides are unfolded by two distinct...
Generally, polypeptides are unfolded by two distinct...
Protein Dynamics in Living Cells
Different fluorescence-based techniques are used to study the protein dynamics in living cells. These techniques include FRAP, FRET, and PET.
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Fluorescent recovery after photobleaching (FRAP) is a fluorescent-protein-based detection technique used to quantify protein movement rates within the cell. This method exposes a small portion of the cell to an intense laser beam. The laser beam causes permanent photobleaching of the fluorophore-tagged proteins in the exposed region. As the bleached...
Transducer Mechanism: G Protein–Coupled Receptors
G Protein–Coupled Receptors (GPCRs) are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to various stimuli. GPCRs regulate critical physiological pathways and are excellent drug targets for treating diseases such as diabetes, cancer, obesity, depression, or Alzheimer's. Nearly 35% of approved drugs implement their therapeutic effects by selectively interacting with specific GPCRs.
GPCRs are also called heptahelical, 7TM, or...
GPCRs are also called heptahelical, 7TM, or...
Transducer Mechanism: Enzyme-Linked Receptors
Enzyme-linked receptors are cell-surface receptors acting as an enzyme or associating with an enzyme intracellularly. They make excellent drug targets. Drugs can bind to the extracellular ligand-binding domain or directly affect their enzymatic domain and alter their activity.
Major types that are helpful drug targets include:
Major types that are helpful drug targets include:
Maximum Power Transfer
Numerous practical applications within engineering disciplines, such as telecommunications, necessitate optimizing power delivery to a connected load. This pursuit, however, entails inherent internal losses, which can either equal or exceed the power supplied to the load. The Thevenin equivalent circuit is helpful in finding the maximum power a linear circuit can deliver to a load. It is assumed in this context that the load resistance can be adjusted.
By substituting the entire circuit with...
By substituting the entire circuit with...

