Human TFIID binds to core promoter DNA in a reorganized structural state.

Human TFIID binds to core promoter DNA in a reorganized structural state.
复制标题

DOI:
10.1016/j.cell.2012.12.005
复制
发表时间:
2013-01-17
期刊:
影响因子:
64.5
通讯作者:
Nogales E
Nogales E
中科院分区:
生物学1区
文献类型:
--
作者:
Cianfrocco MA;Kassavetis GA;Grob P;Fang J;Juven-Gershon T;Kadonaga JT;Nogales E

文献摘要

参考文献

被引文献

相似文献

后生动物转录的机制描述对于理解控制细胞决策的分子过程至关重要。为了提供转录起始 DNA 识别步骤的结构见解,我们使用单粒子电子显微镜观察带有启动子 DNA 的人类 TFIID。该分析表明,TFIID 以两种主要且不同的结构状态共存,这两种结构状态的不同之处在于 TFIID 叶 A 的 100Å 易位。这些结构状态之间的转变由 TFIIA 调节,因为 TFIIA 和启动子 DNA 的存在促进了能够启动子识别和结合的 TFIID 的新型重排状态的形成。 DNA 标记和足迹分析以及冷冻电镜研究,绘制了 TFIID-TFIIA-DNA 结构中 TATA、Inr、MTE 和 DPE 启动子基序的位置。 TFIID 的两种结构和功能不同形式的存在表明,不同的构象异构体可以作为调节因子作用的特定靶标。
A mechanistic description of metazoan transcription is essential for understanding the molecular processes that govern cellular decisions. To provide structural insights into the DNA recognition step of transcription initiation, we used single particle electron microscopy to visualize human TFIID with promoter DNA. This analysis revealed that TFIID co-exists in two predominant and distinct structural states that differ by a 100Å translocation of TFIID’s lobe A. The transition between these structural states is modulated by TFIIA, as the presence of TFIIA and promoter DNA facilitates the formation of a novel rearranged state of TFIID capable of promoter recognition and binding. DNA-labeling and footprinting, together with cryo-EM studies, mapped the locations of the TATA, Inr, MTE, and DPE promoter motifs within the TFIID-TFIIA-DNA structure. The existence of two structurally and functionally distinct forms of TFIID suggests that the different conformers may serve as specific targets for the action of regulatory factors.
DOI: 10.1016/j.ydbio.2009.08.009
发表时间: 2010-03-15
影响因子: 2.7
作者:
Juven-Gershon, Tamar;Kadonaga, James T.
通讯作者: Kadonaga, James T.
DOI: 10.1016/j.jsb.2005.10.012
发表时间: 2006-03-01
影响因子: 3
作者:
Leschziner, AE;Nogales, E
通讯作者: Nogales, E
DOI: 10.1016/j.jsb.2006.06.001
发表时间: 2007-01-01
影响因子: 3
作者:
Chen, James Z.;Grigorieff, Nikolaus
通讯作者: Grigorieff, Nikolaus
DOI: 10.1016/j.cell.2011.04.021
发表时间: 2011-05-13
期刊: Cell
影响因子: 64.5
作者:
Levine M
通讯作者: Levine M
DOI: 10.1016/j.jsb.2006.07.003
发表时间: 2007-01-01
影响因子: 3
作者:
Hohn, Michael;Tang, Grant;Ludtke, Steven J.
通讯作者: Ludtke, Steven J.