SOG1 NAC域的DNA结合和二元化与其经历液-液相分离的能力有功能联系
Kim Mignon1,2, Rani Van der Eecken1,2, Margot Galle1,2,3,4
1Structural Biology Brussels, Vrije Universiteit Brussel, Pleinlaan 2, B-1050 Brussel, Belgium.
Nucleic acids research
|January 20, 2026
概括
SOG1转录因子的NAC域通过RNA或DNA进行液态-液态相分离. 这一过程对于植物的DNA损伤反应至关重要,它取决于DNA结合和二元化.
科学领域:
- 分子生物学分子生物学
- 生物化学 生物化学
- 植物科学 植物科学
背景情况:
- 液-液相分离 (LLPS) 调节真核转录,形成无膜有机体.
- 转录因子DNA结合,多价值相互作用和凝结之间的相互作用尚未完全理解.
研究的目的:
- 调查SOG1转录因子 (SOG1NAC) 的NAC域在LLPS中的作用.
- 阐明连接DNA结合,RNA/DNA相互作用和凝结物形成的机制.
主要方法:
- 在实验室中描述SOG1NAC的相分离行为.
- 评估SOG1NAC的DNA结合特异性和对二分化的依赖性.
- 在特定DNA片段的存在下,对RNA介导的相分离进行分析.
主要成果:
- 在实验室中,SOG1NAC通过RNA和双链DNA进行LLPS.
- 序列特异性DNA结合和LLPS取决于SOG1NAC的同质化和一个带正电荷的DNA结合部位.
- 特定的DNA片段抑制RNA介导的相分离,表明重叠的结合点.
结论:
- SOG1NAC的相分离受其DNA结合特性和二元化调节.
- 叠加的DNA和RNA结合部位表明在转录部位控制凝结物形成的机制.
- 这项研究提供了关于通过LLPS在植物中的转录调节的分子机制的见解.
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