The crystal structure of human Argonaute2.

The crystal structure of human Argonaute2.
复制标题

DOI:
10.1126/science.1221551
复制
发表时间:
2012-05-25
期刊:
Science (New York, N.Y.)
影响因子:
--
通讯作者:
MacRae IJ
MacRae IJ
中科院分区:
其他
文献类型:
--
作者:
Schirle NT;MacRae IJ

文献摘要

参考文献

被引文献

相似文献

Argonaute蛋白形成了真核生物中介导RNA沉默的RNA诱导沉默复合物(RISC)的功能核心。人Argonaute2(Ago2)的2.3 μ m分辨率晶体结构揭示了具有用于结合引导和靶RNA的中央裂缝的双叶分子。引导RNA的异质混合物的核苷酸2至6以A型构象定位,用于与mRNA靶标进行碱基配对。在核苷酸6和7之间存在扭结,其可能在miRNA靶标识别或切割的RNA产物的释放中起作用。PIWI结构域中的串联色氨酸结合口袋定义了一个可能的相互作用表面,用于招募GW182或其他富含色氨酸的辅因子。这些结果将使基于结构的方法能够利用人类RNA沉默的未开发的治疗潜力。
Argonaute proteins form the functional core of the RNA-induced silencing complexes (RISCs) that mediate RNA silencing in eukaryotes. The 2.3 Å resolution crystal structure of human Argonaute2 (Ago2) reveals a bi-lobed molecule with a central cleft for binding guide and target RNAs. Nucleotides 2 to 6 of a heterogeneous mixture of guide RNAs are positioned in an A-form conformation for base pairing with mRNA targets. Between nucleotides 6 and 7 there is a kink, which may function in miRNA target recognition or release of sliced RNA products. Tandem tryptophan binding pockets in the PIWI domain define a likely interaction surface for recruitment of GW182 or other tryptophan-rich cofactors. These results will enable structure-based approaches for harnessing the untapped therapeutic potential of RNA silencing in humans.
DOI: 10.1126/science.1102514
发表时间: 2004-09-03
期刊: SCIENCE
影响因子: 56.9
作者:
Song, JJ;Smith, SK;Joshua-Tor, L
通讯作者: Joshua-Tor, L
DOI: 10.1128/mcb.00380-09
发表时间: 2009-08-01
影响因子: 5.3
作者:
Baillat, David;Shiekhattar, Ramin
通讯作者: Shiekhattar, Ramin
DOI: 10.1038/nsmb.2149
发表时间: 2011-11-01
影响因子: 16.8
作者:
Fabian, Marc R.;Cieplak, Maja K.;Sonenberg, Nahum
通讯作者: Sonenberg, Nahum
DOI: 10.1038/nature02123
发表时间: 2003-11-27
期刊: NATURE
影响因子: 64.8
作者:
Lingel, A;Simon, B;Sattler, M
通讯作者: Sattler, M
DOI: 10.1038/nsb1016
发表时间: 2003-12-01
期刊: NATURE STRUCTURAL BIOLOGY
影响因子: --
作者:
Song, JJ;Liu, JD;Joshua-Tor, L
通讯作者: Joshua-Tor, L