相关实验视频
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Chromatin Immunoprecipitation ChIP using Drosophila tissue
Published on: March 23, 2012
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聚(ADP-ribosyl) 化调节了Drosophila中的绝缘体功能和染色体内相互作用
Chin-Tong Ong1, Kevin Van Bortle, Edward Ramos
1Department of Biology, Emory University, 1510 Clifton Road NE, Atlanta, GA 30322, USA.
Cell
|September 24, 2013
概括
聚ADP-ribosyl) 基因修饰Drosophila绝缘体蛋白质,影响它们在基因组组织中的功能. 这种修改对于增强剂-促进剂相互作用和保持基因组的三维结构至关重要.
科学领域:
- 分子生物学分子生物学
- 基因组学就是基因组学.
- 表观遗传学 在表观遗传学中,表观遗传学是指表观遗传学.
背景情况:
- 绝缘体是基因组架构的关键调节器,调解DNA接触.
- 控制绝缘体活动和基因组3D组织的机制尚未完全理解.
研究的目的:
- 为了研究聚-ADP-ribosyl) 化在Drosophila中调节绝缘体功能的作用.
- 阐明多元ADP-ribosyl化如何影响三维基因组组织.
主要方法:
- 在Drosophila.中发生的多聚 (ADP-ribose) 聚合酶 (Parp) 基因突变.
- 对绝缘蛋白dCTCF和Su(Hw) 的DNA占用率的分析.
- 在体内评估蛋白质与蛋白质相互作用,核膜协会和绝缘体活性.
- 4C (染色体构造捕获碳复制) 技术用于测量染色体内相互作用.
主要成果:
- 果虫绝缘体蛋白经历了多元化 (ADP-ribosyl) 化,而Parp突变会损害绝缘体的功能.
- CP190的多分子ADP-ribosyl化增强了蛋白质相互作用,核膜协会和体内绝缘体活性.
- 在Parp突变细胞中,CP190复合体的核聚类被破坏.
- 聚 ((ADP-ribosyl) 化促进了绝缘体位点之间的染色体内相互作用.
结论:
- 聚(ADP-ribosyl) 化是Drosophila中绝缘体功能的调节机制.
- 这种翻译后修改通过调节绝缘体活动来影响三维基因组组织.
- 聚ADP-ribosyl化在建立和维护基因组架构方面发挥着重要作用.
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