相关实验视频
Updated: Jul 27, 2025
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Agarose Gel Electrophoresis for the Separation of DNA Fragments
Published on: April 20, 2012
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开发一种新型的二维凝电泳协议,使用阿加洛斯原生凝电泳
Masataka Nakagawa1, Yui Tomioka1, Chiaki Sakuma1
1Research and Development Division, Kyokuto Pharmaceutical Industrial Co., Ltd., Takahagi-shi, Ibaraki, Japan.
Electrophoresis
|June 9, 2023
概括
一个新的二维电泳协议将原生阿加罗斯凝电泳与SDS-PAGE或SDS阿加罗斯凝电泳相结合,用于快速蛋白质分析. 这种具有成本效益的方法可在一天内可视化各种蛋白质,包括复杂的蛋白质.
科学领域:
- 生物化学 生物化学
- 蛋白质组学是指蛋白质组学.
- 分析化学 分析化学
背景情况:
- 二维 (2D) 电泳对于蛋白质分离和分析至关重要.
- 现有的原生电泳方法,如蓝色原生-PAGE在同时可视化酸性和基本性蛋白质方面存在局限性.
- 需要一个多功能,经济高效,快速的二维电泳协议.
研究的目的:
- 开发和验证一种新的2D电泳协议,将原生阿加罗斯凝电泳与SDS-PAGE或SDS阿加罗斯凝电泳相结合.
- 为了使基本和酸性蛋白质在其原始状态或复杂结构中的同时可视化.
- 为蛋白质分析提供一个快速,具有成本效益和多功能平台.
主要方法:
- 开发了一种使用His/MES缓冲器 (pH 6.1) 进行一维 (1D) 原生阿加罗斯凝电泳的2D电泳协议.
- 整合了1D原生阿加罗斯凝条,用于第二维 (2D) 的垂直二硫酸 (SDS) 聚烯胺凝电泳 (PAGE) 或平面SDS阿加罗斯凝电泳.
- 使用单个电泳装置以低成本进行定制操作.
主要成果:
- 成功可视化了基本和酸性蛋白质,原生蛋白质复合体,单克隆和多克隆抗体,以及像IgM pentamer和β-galactosidase tetramer这样的大型蛋白质复合体.
- 用五种模型蛋白质证明了该协议的有效性:BSA,XA因子,卵子转移素,IgG和lyszyme.
- 在一天内 (大约5-6小时) 完成了完整的分析.
结论:
- 开发的2D电泳协议提供了一种真正的原生电泳方法,与染料结合方法不同.
- 这种创新技术为全面的蛋白质分析提供了快速,经济有效和多功能解决方案.
- 该协议可扩展用于进一步分析,包括西方涂抹和质谱.
相关概念视频
02:35DNA Agarose Gel Electrophoresis
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Agarose gel electrophoresis is a laboratory technique commonly used to separate DNA fragments by size. However, it can also be used to isolate and purify DNA fragments using a gel extraction protocol.
Gel extraction follows five major steps: running gel electrophoresis to separate fragments, isolating the individual bands, extracting DNA from those bands, and removing the dye and salts from the extracted mixture to obtain pure DNA.
In cloning experiments, both the insert and vector DNA...
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In cloning experiments, both the insert and vector DNA...
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01:22Two-dimensional Gel Electrophoresis
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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...
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01:27SDS-PAGE
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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...
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