从RGG动机/G四重复相互作用的探索中识别G四重复结合蛋白
Zhou-Li Huang1, Jing Dai1, Wen-Hua Luo1
1School of Pharmaceutical Sciences , Sun Yat-sen University , Guangzhou 510006 , People's Republic of China.
Journal of the American Chemical Society
|December 6, 2018
概括
研究人员探索了RGG主题
科学领域:
- 生物化学
- 分子生物学
- 遗传学
背景情况:
- 氨酸/甘氨酸丰富 (RGG) 域在G-四重复 (G4) 结合蛋白中很常见.
- 这些域内的小RGG图案对于G4结合亲和力至关重要.
- 对于RGG图案本身的具体作用尚不清楚.
研究的目的:
- 澄清RGG基因在G4蛋白相互作用中的作用.
- 调查RGG动机和G4s之间的结合亲和和模式.
- 通过RGG动机探索识别新的G4结合蛋白.
主要方法:
- 系统地研究RGG基因和G4之间的结合亲和和模式.
- 对RGG重复排列和氨基酸定位对G4结合的影响的分析.
- 作为G4DNA结合蛋白的冷诱导RNA结合蛋白 (CIRBP) 的鉴定.
主要成果:
- RGG重复和间隙氨基酸的内部排列比G4结合的重复数更为重要.
- 在RGG基因中特定的氨酸和氨酸位置可以通过结合和π堆叠来增强G4结合.
- CIRBP被确定为一种新的G4DNA结合蛋白,其关键氨基酸与之前发现的RGG ( 12) 相似.
结论:
- RGG 基因在 G4 蛋白相互作用中起着至关重要的作用,具有增强结合的特定结构特征.
- 12对CIRBP的G4结合有显著的作用.
- 这项研究通过分析RGG域内的关键片来发现G4结合蛋白的新策略.
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