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基于酸的化配体的一般选策略:用于PDZ域介导相互作用的动态研究的探针

Matthieu Sainlos¹, Wendy S Iskenderian, Barbara Imperiali

¹Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, USA.

Journal of the American Chemical Society

|April 25, 2009

概括

研究人员使用4-DMAP染色体开发了对I类PDZ域的环境敏感探针. 这些探针在结合时增强光,有助于研究PDZ域相互作用.

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:

PDZ域是关键的蛋白相互作用模块,参与脚手架和信号传输.
PDZ域相互作用的失调与各种疾病有关,突出显示了对有效研究工具的需求.

研究的目的:

为I类PDZ领域开发一种通用和高效的制造光探针的方法.
创建高亲和度探针,保持本地序列的特异性,并在结合时显示显著的光变化.

主要方法:

利用对环境敏感的染色体,特别是4-DMAP,用于探头开发.
采用了Stargazin的C端序列和PSD-95和Shank3的PDZ域中的,以优化探针设计.
确定最大光响应的最佳染色体位置和左边长.

主要成果:

确定了4-DMAP染色体附着到的最佳条件,以向I类PDZ域.
为PSD-95和Shank3 PDZ域生成了具有保留序列特异性的高亲和度光探针.
在探针结合到目标PDZ域时,显著的光增加.

结论:

开发的探测器是研究PDZ域介导相互作用的动态和调节机制的有效工具.
这种方法为创建各种PDZ域的探测器提供了一种多功能策略.
增强的光信号有助于实时监测蛋白质与蛋白质相互作用.

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