用质谱,定位和H/D交换量化蛋白质-配体相互作用:PLIMSTEX
Mei M Zhu1, Don L Rempel, Zhaohui Du
1Resource for Mass Spectrometry, Department of Chemistry, Washington University, St. Louis, Missouri 63130, USA.
Journal of the American Chemical Society
|May 2, 2003
概括
我们开发了一种新的方法,质谱,定位和H / D交换 (PLIMSTEX) 的蛋白质-连接体相互作用,以量化蛋白质-连接体相互作用和溶液中的 conformational 变化.
科学领域:
- 生物物理学的生物物理.
- 生物化学 生物化学
- 结构生物学 结构生物学
背景情况:
- 蛋白质 - 配体相互作用是生物过程的基础.
- 了解这些相互作用对于药物设计和开发至关重要.
- 结合后的形态变化显著影响蛋白质功能.
研究的目的:
- 引入一种新的方法,PLIMSTEX,用于量化溶液中的蛋白质-配体相互作用.
- 为了确定结合性固体测量,亲和力和形状变化.
- 为生物物理特征提供一个灵敏和多功能工具.
主要方法:
- 使用质谱,定位和- (H/D) 交换.
- 采用列上的蛋白质度和淡化.
- 允许优化缓冲系统,盐和pH值.
主要成果:
- PLIMSTEX准确地量化了各种蛋白质 - 连接体系统的结合常量.
- 该方法确定了结合性静脉测量和形状变化.
- 实现高灵敏度与蛋白质的小分子数量,超过NMR和X射线晶体学.
结论:
- PLIMSTEX是一种新,敏感和多功能的方法,用于研究蛋白质 - 连接体相互作用.
- 它提供了关于结合亲和力,固体测量和形状动态学的见解.
- 自动化潜力使其适用于药物发现和蛋白质组学中的高通量选.
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