H3K27me3阅读器BP1的液-液相分离调节了转录抑制
Guangfei Tang1, Haoxue Xia1, Yufei Huang1,2
1State Key Laboratory for Biology of Plant Diseases and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing, 100193, China.
Genome biology
|March 12, 2024
概括
含有蛋白质1 (BP1) 的相邻的同质植物主体域形成液体凝结物来抑制真菌中的基因转录. 这一过程对于通过与表观遗传沉默机制相互作用来调节菌毒素生物合成基因至关重要.
科学领域:
- 分子生物学分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 菌类学 菌类学是指菌类学.
背景情况:
- 含有蛋白质1 (BP1) 的相邻的同质植物主体域读取真菌中的基因组修饰.
- BP1特别识别了H3K27me3,这是基因沉默的标志.
- 目前尚不清楚BP1在转录抑制中的作用.
研究的目的:
- 研究BP1参与转录抑制的机制.
- 探索液-液相分离在BP1函数中的作用.
- 了解BP1对Fusarium graminearum中的基因调节的贡献.
主要方法:
- 删除试验用于识别BP1.1的功能域.
- 分析BP1与多镇压复合物的相互作用 2.
- 评估BP1突变对H3K27me3结合和基因表达的影响.
主要成果:
- BP1通过其本质上无序的区域2 (IDR2) 介导形成液态液态相隔冷凝.
- BP1相隔离对于其与Zeste 12抑制剂的相互作用至关重要.
- 删除IDR2会破坏BP1-H3K27me3的结合,并减少菌毒素生物合成基因的抑制.
结论:
- BP1利用液体-液体相分离来维持转录抑制.
- 这项研究扩大了对后翻译修改和相分离在基因调节中的相互作用的理解.
- 在控制真菌毒性因素方面,BP1的相分离是至关重要的.
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