PWOs通过调节Arabidopsis中的染色质结构来抑制基因转录
Tingting Yang1, Dingyue Wang1, Lingxiao Luo1
1State Key Laboratory of Protein and Plant Gene Research, School of Advanced Agricultural Sciences, Peking-Tsinghua Center for Life Sciences, Peking University, No.5 Yiheyuan Road, Haidian District, Beijing 100871, China.
Nucleic acids research
|November 11, 2024
概括
聚合物的PWWP-DOMAIN交互体 (PWO) 蛋白质维持染色质结构和基因抑制. 它们与PRC2和层状蛋白一起工作,以控制H3K27me3区块域及其核定位.
科学领域:
- 植物分子生物学 植物分子生物学
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
- 调节染色体结构的调节
背景情况:
- 聚合物的PWWP-DOMAIN交互体 (PWO) 蛋白质对于植物发育至关重要.
- 通过PWOs影响染色质结构的确切机制尚不清楚.
研究的目的:
- 阐明PWO蛋白在调节植物染色质结构中的作用的分子机制.
- 为了研究PWOs,Polycomb抑制复合体2 (PRC2) 和染色体组织中的层状蛋白之间的相互作用.
主要方法:
- 分析PWO1结合位点及其与基因素修饰 (H3K27me3) 的关联.
- 调查PWO和PRC2在维护H3K27me3-丰富区域 (H3K27me3-CD) 结构和核定位方面的作用.
- 检查PWOs和状蛋白在基因转录抑制中的协作.
主要成果:
- PWO1结合部位与积极的基因素修饰有关,并排除了H3K27me3.3.
- PWOs与H3K27me3-CD边界区域结合,加强了它们的完整性.
- 失去PWO或PRC2会削弱H3K27me3-CDs,导致隔间切换和从核外围迁移.
- PWOs和状蛋白质合作抑制H3K27me3-CDs中的基因转录.
结论:
- 对于维持H3K27me3-CDs.s的压制性状态来说,PWOs是必不可少的.
- 在核中,PWOs在调节H3K27me3-CDs的空间组织方面发挥着重要作用.
- PWOs与PRC2平行运行,并与状蛋白合作控制染色质结构和基因表达.
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