相关实验视频
Updated: May 12, 2026
10:12
Protein Misfolding Cyclic Amplification of Prions
Published on: November 7, 2012
19.7K
检测子样蛋白的相位过渡的协议在体外,与度变化
Xiao-Tong Chen1, Yu-Meng Sun1, Wen-Tao Wang1
1MOE Key Laboratory of Gene Function and Regulation, Guangdong Province Key Laboratory of Pharmaceutical Functional Genes, State Key Laboratory of Biocontrol, School of Life Sciences, Sun Yat-sen University, Guangzhou 510275, China.
STAR protocols
|June 21, 2025
概括
这项研究概述了一项协议,以调查子样蛋白度如何影响纤维拉林 (FBL) 阶段过渡. 该方法使用体外相位分离试验来检测FBL的凝聚状态,有助于研究蛋白质类域.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 生物物理学的生物物理.
背景情况:
- 蛋白质度极大地影响含有类域 (PLD) 的蛋白质从液态到固态相变.
- 了解这些相位过渡对于理解细胞过程和疾病机制至关重要.
研究的目的:
- 提出一个详细的协议,用于研究类蛋白度对纤维拉林 (FBL) 凝聚物的相变的影响.
- 建立一种可复制的方法,用于在体外研究蛋白相分离.
主要方法:
- 使用相分离试验的协议的开发.
- 光蛋白标记纤维拉林 (FBL) 质体的构建.
- 在体外蛋白质表达,净化和检测凝结FBL状态.
主要成果:
- 描述了分析FBL凝聚物的蛋白质度依赖相变的综合性协议.
- 该协议可以在体外检测和表征缩蛋白质状态.
结论:
- 提出的协议为研究类蛋白质相变提供了有价值的工具.
- 这种方法可以广泛应用于各种类似子的蛋白质,进步生物分子凝聚物的领域.
相关概念视频
02:39Phase Transitions: Melting and Freezing
Heating a crystalline solid increases the average energy of its atoms, molecules, or ions, and the solid gets hotter. At some point, the added energy becomes large enough to partially overcome the forces holding the molecules or ions of the solid in their fixed positions, and the solid begins the process of transitioning to the liquid state or melting. At this point, the temperature of the solid stops rising, despite the continual input of heat, and it remains constant until all of the solid is...
02:15Protein and Protein Structure
Proteins are one of the most abundant organic molecules in living systems and have the most diverse range of functions of all macromolecules. Proteins may be structural, regulatory, contractile, or protective. They may serve in transport, storage, or membranes; or they may be toxins or enzymes. Their structures, like their functions, vary greatly. They are all, however, amino acid polymers arranged in a linear sequence.
A protein's shape is critical to its function. For example, an enzyme can...
A protein's shape is critical to its function. For example, an enzyme can...
02:32Position-effect Variegation
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
01:24Protein Diffusion in the Membrane
Proteins show rotational as well as lateral diffusion across the membrane. The lateral diffusion of proteins was confirmed through the cell fusion experiment where mouse and human cells were fused, resulting in hybrid cells. When the human and mouse cells fused, the specific membrane proteins on human and mouse cells were marked with the red and green-fluorescent markers, respectively. Initially, the red and green fluorescence was located on the respective hemisphere of the cell. As time...
01:15Western Blotting
Western blotting is an analytical technique for protein identification. It has various applications in immunology and medicine, including detecting diseases like bovine spongiform encephalopathy, mad cow disease, and human and feline immunodeficiency virus from biological samples.
The technique begins with separating proteins from the sample using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), followed by protein transfer, immunoblotting, and finally, protein detection.
The technique begins with separating proteins from the sample using sodium dodecyl sulfate-polyacrylamide gel electrophoresis (SDS-PAGE), followed by protein transfer, immunoblotting, and finally, protein detection.