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转录因子MYC:MAX中的内在无序区域通过内部分子相互作用调节DNA结合
Stefan Schütz1, Christian Bergsdorf1, Sandra Hänni-Holzinger1
1Novartis Institutes for BioMedical Research, Novartis Campus, CH-4056 Basel, Switzerland.
Biochemistry
|January 24, 2024
概括
本质上有障碍的蛋白MYC是由分子内相互作用调节的,其DNA结合域与本质上有障碍的区域结合. 这些相互作用减缓MYC:MAX与DNA的结合,为药物发现提供了新的途径.
科学领域:
- 分子生物学分子生物学
- 蛋白质动力学 蛋白质动力学
- 转录因子法规转录因子法规
背景情况:
- MYC是一个关键的转录因子,调节细胞循环,新陈代谢和亡.
- MYC功能主要通过与其他蛋白质的相互作用来调节.
- MYC是一种基本上本质上有障碍的蛋白,与MAX形成复合体.
研究的目的:
- 调查分子内相互作用在MYC调节中的作用.
- 识别和绘制MYC:MAXDNA结合域在MYC内在无序区域上的结合点.
- 了解这些分子内相互作用如何影响MYC的DNA结合.
主要方法:
- 核磁共振 (NMR) 光谱法用于绘制结合点的地图.
- 表面等离子共振 (SPR) 来研究结合动力学.
- 准备复合全长MYC:MAX复合物的制备.
主要成果:
- 在MYC的内在无序区域上发现了MYC:MAXDNA结合域的多个结合位.
- 内部分子相互作用是由静电吸引驱动的,并表现出明显的亲和力.
- 这些相互作用与DNA结合具有竞争力,特别是涉及MYC盒0 (Mb0).
- 内分子相互作用减缓了MYC:MAX复合物的与DNA的结合.
结论:
- MYC是由其内在无序区域内的分子内相互作用调节的.
- 这些相互作用调节MYC的DNA结合活性,影响基因调节.
- 这些发现为bHLH-LZ TF监管和潜在的药物目标提供了新的见解.
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