阿拉比多普西斯FLL2促进了多化复合物的液态分离
Xiaofeng Fang1, Liang Wang2, Ryo Ishikawa1,3
1John Innes Centre, Norwich, UK.
Nature
|May 3, 2019
概括
研究人员在体内发现FLL2,一个卷状卷状蛋白,是液体-液体相分离的关键调节器. FLL2通过RNA结合蛋白FCA促进核体的形成,通过近位多化增强基因调节.
科学领域:
- 细胞生物化学
- 分子生物学
- 遗传学
背景情况:
- 生物分子凝聚物通过液相分离形成,这对细胞生物化学至关重要.
- 尽管进行了广泛的体外研究,但这一过程的体内调节仍不明.
- 结合RNA的蛋白质FCA表现出相分离行为并调节转录.
研究的目的:
- 确定液态相分离的体内调节剂.
- 阐明FLL2在FCA核体形成中的作用.
- 了解FCA核体如何影响基因表达.
主要方法:
- 在Arabidopsis进行基因查以确定影响FCA功能的因素.
- 利用子宫外表达来研究FLL2的影响.
- 使用甲交叉链接来捕获体内蛋白质相互作用.
主要成果:
- 确定FLL2,一个卷状卷状蛋白,对于FCA核体的形成至关重要.
- FLL2促进近位多化,这是FCA的一个功能,但不是RNA结合.
- 宫外FLL2表达增加了FCA核体大小和数量.
- 在FLL2,FCA和RNA3'-end处理机器之间已证明的体内相互作用.
结论:
- 在体内,卷-卷蛋白可以促进液-液相分离.
- FCA核体将3'-end处理因子分隔成部分,以增强多化.
- 这项研究扩大了对类似液体的体内动态的理解.
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