在凝内重新折叠允许在SDS-PAGE后光检测完全变质的GFPs
Misa Shiratori1, Rio Tsuyuki1, Miwako Asanuma1
1Department of Chemistry, Faculty of Science, Ochanomizu University, 2-1-1 Otsuka, Bunkyo-ku, Tokyo, 112-8610, Japan.
Analytical biochemistry
|April 7, 2025
概括
这项研究引入了一种新的方法,用于在SDS-聚烯胺凝电泳 (PAGE) 后在凝中重新折叠变质的绿色光蛋白 (GFP). 这允许直接在凝内检测光,简化了GFP融合蛋白质分析.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 蛋白质分析 蛋白质分析
背景情况:
- 绿色光蛋白 (GFPs) 对于可视化蛋白质定位和动态至关重要.
- 目前的GFP检测方法与变性SDS-聚烯胺凝电泳 (PAGE) 不兼容.
- 现有用于凝内GFP检测的协议通常涉及不完整的变性,影响蛋白质的移动性.
研究的目的:
- 开发一种方法,在标准 SDS-PAGE 之后,直接在凝中检测 GFP 融合蛋白的光.
- 为了克服GFP光与化电泳条件的不相容性.
- 为基于抗体的检测方法提供更简单,更具成本效益的替代方案.
主要方法:
- 在20%甲醇的存在下利用循环德素介导的SDS去除,在凝中重新折叠完全变质的GFPs.
- 将重新折叠协议应用于SDS-PAGE分离的GFP融合蛋白.
- 评估重新折叠方法与随后的总蛋白质染色和西部涂抹的兼容性.
主要成果:
- 在SDS-PAGE后的凝中成功地证明了完全变质的GFPs的重新折叠.
- 启用了GFP融合蛋白的直接in-gel光检测.
- 该协议与下游分析相容,例如总蛋白质染色和西部涂抹.
结论:
- 开发的循环德克斯特林介导的重新折叠技术允许在SDS-PAGE之后直接在凝内光检测GFP融合蛋白质.
- 这种方法为传统免疫检测提供了一个简单,节省时间和成本的有效替代方案.
- 需要进一步的研究,以确定这种技术在各种GFP融合蛋白中具有广泛的适用性.
更多相关视频
10:31Residue-Specific Exchange of Proline by Proline Analogs in Fluorescent Proteins: How "Molecular Surgery" of the Backbone Affects Folding and Stability
Published on: February 3, 2022
2.9K
19:23Use of Recombinant Fusion Proteins in a Fluorescent Protease Assay Platform and Their In-gel Renaturation
Published on: January 16, 2019
9.2K
相关概念视频
01:27SDS-PAGE
27.1K
Gel electrophoresis is a method that separates biological macromolecules like nucleic acids or proteins by forcing them to pass through a gel matrix under an electric field.
A variation of gel electrophoresis, termed polyacrylamide gel electrophoresis (PAGE), is commonly used for separating proteins according to their molecular size by passing them through a polyacrylamide gel. Because of the varying charges associated with amino acid side chains, PAGE can be used to separate intact...
A variation of gel electrophoresis, termed polyacrylamide gel electrophoresis (PAGE), is commonly used for separating proteins according to their molecular size by passing them through a polyacrylamide gel. Because of the varying charges associated with amino acid side chains, PAGE can be used to separate intact...
27.1K
01:22Two-dimensional Gel Electrophoresis
5.6K
Two-dimensional gel electrophoresis is a high-resolution protein separation method first introduced by O' Farrell and Klose in 1975. This method involves protein separation by two dimensions, mass and charge, making it more accurate than one-dimensional gel electrophoresis.
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such...
The first dimension separation uses the isoelectric focusing or IEF technique performed on immobilized pH gradient (IPG) strips that separate proteins according to their isoelectric points.
Biological samples, such...
5.6K