相关实验视频
Updated: Jan 26, 2026

04:40
Electrostatic Method to Remove Particulate Organic Matter from Soil
Published on: February 10, 2021
5.2K
沙佩罗宁TRiC/CCT通过细胞蛋白质稳定所必需的保存电静界面与前foldin结合
Daniel Gestaut1, Soung Hun Roh2, Boxue Ma3
1Department of Biology and Genetics, Stanford University, Stanford, CA 94305, USA.
Cell
|April 9, 2019
概括
基本的辅助子TRiC/CCT和预折/GIMc (PFD) 构成了对蛋白质折叠至关重要的超级辅助子组. 这种复合物防止有毒蛋白质聚合,并维持细胞蛋白质稳定.
科学领域:
- 分子生物学
- 结构生物学
- 细胞生物学
背景情况:
- 细胞蛋白折叠依赖于伴侣系统,如TRiC/CCT和前折叠蛋白/GIMc (PFD).
- 了解这些伴侣之间的合作对于维持蛋白质稳定至关重要.
研究的目的:
- 阐明TRiC/CCT和PFD之间的结构和功能相互作用.
- 研究PFD增强TRiC/CCT蛋白质折叠活动的机制.
主要方法:
- 低温电子显微镜 (cryo-EM) 来确定TRiC-PFD复合物的结构.
- 交叉连接质谱测绘蛋白质之间的相互作用.
- 生物化学和细胞测试以评估功能后果.
主要成果:
- 通过保存的静电接口,TRiC/CCT和PFD结合在一起,形成一个定义的架构.
- PFD在开放和关闭状态之间表现出一个形态循环,对准基板结合室.
- PFD提高了TRiC/CCT折叠率和产量,抑制了非生产周期.
- 干扰TRiC-PFD相互作用导致粉样蛋白聚合物的体内积累.
结论:
- 对于有效的细胞蛋白质稳定来说,TRiC-PFD超链组件至关重要.
- 这种复合物防止有毒的蛋白质构成,并保持蛋白质折叠的真实性.
- 这种相互作用对细胞健康至关重要, 干扰会造成有害影响.
相关概念视频
What is Conservation Biology?
24.0K
Conservation biology is a scientific field that focuses on the preservation of biodiversity in order to protect ecosystems while meeting the needs of the human population. Humans require properly functioning ecosystems to maintain our supply of natural resources, including food, medicines, and building materials.
24.0K
Conservation of Small Populations
16.7K
Small population sizes put a species at extreme risk of extinction due to a lack of variation, and a consequent decrease in adaptability. This weakens the chances of survival under pressures such as climate change, competition from other species, or new diseases. Large populations are more likely to survive pressures such as these, as such populations are more likely to harbor individuals that have genetic variants that are adaptive under new stresses. Small populations are much less...
16.7K
Conserved Binding Sites
5.1K
Many proteins’ biological role depends on their interactions with their ligands, small molecules that bind to specific locations on the protein known as ligand-binding sites. Ligand-binding sites are often conserved among homologous proteins as these sites are critical for protein function.
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
Binding sites are often located in large pockets, and if their location on a protein’s surface is unknown, it can be predicted using various approaches. The energetic method computationally...
5.1K
Electrostatic Boundary Conditions
949
Consider an external electric field propagating through a homogeneous medium. When the electric field crosses the surface boundary of the medium, it undergoes a discontinuity. The electric field can be resolved into normal and tangential components. The amount by which the field changes at any boundary is given by the difference between the field components above and below the surface boundary.
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
The surface integral of an electric field is given by Gauss's law in integral form and is related to...
949
Compounds Essential to Human Function
10.1K
The human body is composed of cells that are fundamentally made up of several different molecules. These molecules are essential to carry out all physiological processes in the body and are broadly classified into organic and inorganic based on their chemical structures.
Inorganic Compounds Essential to Human Functioning
Inorganic compounds essential to human functioning include water, salts, acids, and bases. These compounds are inorganic, i.e., they do not have a carbon-hydrogen bond. Water...
Inorganic Compounds Essential to Human Functioning
Inorganic compounds essential to human functioning include water, salts, acids, and bases. These compounds are inorganic, i.e., they do not have a carbon-hydrogen bond. Water...
10.1K
Protein-protein Interfaces
14.6K
Many proteins form complexes to carry out their functions, making protein-protein interactions (PPIs) essential for an organism's survival. Most PPIs are stabilized by numerous weak noncovalent chemical forces. The physical shape of the interfaces determines the way two proteins interact. Many globular proteins have closely-matching shapes on their surfaces, which form a large number of weak bonds. Additionally, many PPIs occur between two helices or between a surface cleft and a...
14.6K

