Auto-inhibitory Mechanism of the Human Mitochondrial RNase P Protein Complex.

Auto-inhibitory Mechanism of the Human Mitochondrial RNase P Protein Complex.
复制标题

人线粒体 RNase P 蛋白复合物的自抑制机制。

DOI:
10.1038/srep09878
复制
发表时间:
2015-04-30
期刊:
影响因子:
4.6
通讯作者:
Shen Y
Shen Y
中科院分区:
综合性期刊3区
文献类型:
--
作者:
Li F;Liu X;Zhou W;Yang X;Shen Y

文献摘要

参考文献

被引文献

相似文献

已知tRNA在遗传信息从DNA到蛋白质的传递中起着重要作用。tRNA前体的成熟由核糖核酸内切酶RNase P进行,其典型地由主要RNA片段和辅助蛋白组成。然而,新鉴定的人线粒体RNase P样蛋白(MRPP 123)复合物是独特的,因为它是由三种蛋白质组成,没有RNA。在这里,我们确定了MRPP 123复合物亚基3(MRPP 3)的晶体结构,它被认为是进行催化反应。结合生物化学测定的详细结构分析表明,MRPP3处于自抑制构象,其中催化所必需的金属离子被排除在活性位点之外。我们的研究结果表明,进一步的调控是必要的,以重新排列的构象的MRPP3的活性位点,并触发它,从而提供了重要的信息,以了解MRPP123的激活。
It is known that tRNAs play an essential role in genetic information transfer from DNA to protein. The maturation of tRNA precursors is performed by the endoribonuclease RNase P, which classically consists of a main RNA segment and accessory proteins. However, the newly identified human mitochondrial RNase P-like protein (MRPP123) complex is unique in that it is composed of three proteins without RNA. Here, we determined the crystal structure of MRPP123 complex subunit 3 (MRPP3), which is thought to carry out the catalytic reaction. A detailed structural analysis in combination with biochemical assays suggests that MRPP3 is in an auto-inhibitory conformation in which metal ions that are essential for catalysis are excluded from the active site. Our results indicate that further regulation is necessary to rearrange the conformation of the active site of MRPP3 and trigger it, thus providing important information to understand the activation of MRPP123.
PRP8中的构象开关介导了促进前MRNA外显子连接的金属离子配位。
DOI: 10.1038/nsmb.2556
发表时间: 2013-06
影响因子: 16.8
作者:
Schellenberg, Matthew J.;Wu, Tao;Ritchie, Dustin B.;Fica, Sebastian;Staley, Jonathan P.;Atta, Karim A.;LaPointe, Paul;MacMillan, Andrew M.
通讯作者: MacMillan, Andrew M.
DOI: 10.4161/rna.24513
发表时间: 2013-06-01
期刊: RNA BIOLOGY
影响因子: 4.1
作者:
Howard, Michael J.;Liu, Xin;Engelke, David R.
通讯作者: Engelke, David R.
DOI: 10.1093/nar/gkq701
发表时间: 2010-12
影响因子: 14.9
作者:
Jarrous N;Gopalan V
通讯作者: Gopalan V
DOI: 10.1074/jbc.m704572200
发表时间: 2007-09-21
影响因子: 4.8
作者:
Lee, Changkeun;Kramer, Gisela;Appling, Dean R.
通讯作者: Appling, Dean R.
DOI: 10.1038/nature09516
发表时间: 2010-12-09
期刊: Nature
影响因子: 64.8
作者:
Reiter NJ;Osterman A;Torres-Larios A;Swinger KK;Pan T;Mondragón A
通讯作者: Mondragón A