相关实验视频
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Assays for Validating Histone Acetyltransferase Inhibitors
Published on: August 6, 2020
希斯乙转移酶复合体稳定了swi/snf与促进核细胞体的结合
A H Hassan1, K E Neely, J L Workman
1Howard Hughes Medical Institute and Department, of Biochemistry and Molecular Biology, The Pennsylvania State University, 16802, University Park, PA, USA
Cell
|April 6, 2001
概括
在SWI/SNF染色体重塑器被转录激活器招募到促进者,导致核细胞破坏. 它的保留需要通过HAT复合体的激活剂或胰岛素乙化.
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.
- 染色体生物学 染色体生物学
背景情况:
- SWI/SNF是一个关键的染色质重塑复合体.
- 了解它在基因促进体中的确切作用至关重要.
- 它的招聘和留守机制尚未完全阐明.
研究的目的:
- 研究SWI/SNF在促进体的特定位点染色质重塑中的功能.
- 通过转录激活器招募后分析SWI/SNF分布,功能和保留.
- 阐明SWI/SNF与酸转移酶 (HAT) 复合体之间的相互作用.
主要方法:
- 使用纯化的系统进行生化分析.
- 研究了一种特定序列的转录激活剂对SWI/SNF的招募.
- 评估核细胞干扰和SWI/SNF保留在促进体-近位核细胞上.
- 研究了由SAGA和NuA4 HAT复合体对素乙化的作用.
主要成果:
- 激活剂的招募导致了SWI/SNF结合和局部核细胞组破坏.
- SWI/SNF的保留取决于持续的激活剂结合或基因素乙化.
- 通过SAGA或NuA4增强的SWI/SNF保留在促进体上.
- 证明了HAT和SWI/SNF之间的功能联系.
结论:
- 在激活剂结合后,SWI/SNF被招募到促进体和重塑核体.
- 通过HATs进行的素乙化稳定了SWI/SNF对促进体的结合.
- 这些发现为有序招募染色体修饰复合物提供了机制基础.
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