Tim23-Tim50 pair coordinates functions of translocators and motor proteins in mitochondrial protein import.

Tim23-Tim50 pair coordinates functions of translocators and motor proteins in mitochondrial protein import.
复制标题

DOI:
10.1083/jcb.200808068
复制
发表时间:
2009-01-12
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Endo T
Endo T
中科院分区:
其他
文献类型:
--
作者:
Tamura Y;Harada Y;Shiota T;Yamano K;Watanabe K;Yokota M;Yamamoto H;Sesaki H;Endo T

文献摘要

参考文献

被引文献

相似文献

线粒体蛋白质运输需要线粒体膜上蛋白质转运体复合体的协调运行。TIM23复合体将蛋白质移位并插入线粒体内膜。在这里,我们分析了TIM23和TIM50的膜间隙(IMS)结构域,这两个结构域是TIM23复合体的重要亚基。我们发现,TIM23和TIM50在IMS中的相互作用促进了前体蛋白从外膜上的一个普遍的蛋白质转运体Tom40复合体转移到TIM23复合体。TIM23-Tim50的相互作用还通过促进基质中线粒体Hsp70的运动功能,促进了蛋白质跨内膜转运的后期步骤。因此,TIM23-Tim50对协调Tom40和TIM23复合体与马达蛋白的作用,以输入线粒体蛋白。
Mitochondrial protein traffic requires coordinated operation of protein translocator complexes in the mitochondrial membrane. The TIM23 complex translocates and inserts proteins into the mitochondrial inner membrane. Here we analyze the intermembrane space (IMS) domains of Tim23 and Tim50, which are essential subunits of the TIM23 complex, in these functions. We find that interactions of Tim23 and Tim50 in the IMS facilitate transfer of precursor proteins from the TOM40 complex, a general protein translocator in the outer membrane, to the TIM23 complex. Tim23–Tim50 interactions also facilitate a late step of protein translocation across the inner membrane by promoting motor functions of mitochondrial Hsp70 in the matrix. Therefore, the Tim23–Tim50 pair coordinates the actions of the TOM40 and TIM23 complexes together with motor proteins for mitochondrial protein import.
DOI: 10.1073/pnas.96.21.11770
发表时间: 1999-10-12
影响因子: 11.1
作者:
Esaki, M;Kanamori, T;Endo, T
通讯作者: Endo, T
DOI: 10.1073/pnas.96.7.3634
发表时间: 1999-03-30
影响因子: 11.1
作者:
Kanamori, T;Nishikawa, S;Endo, T
通讯作者: Endo, T
DOI: 10.1083/jcb.200708199
发表时间: 2007-11-19
期刊: The Journal of cell biology
影响因子: --
作者:
Kutik S;Guiard B;Meyer HE;Wiedemann N;Pfanner N
通讯作者: Pfanner N
DOI: 10.1016/j.cell.2005.01.011
发表时间: 2005-03-25
期刊: CELL
影响因子: 64.5
作者:
Chacinska, A;Lind, M;Rehling, P
通讯作者: Rehling, P
DOI: 10.1091/mbc.e07-07-0669
发表时间: 2008-01-01
影响因子: 3.3
作者:
Alder, Nathan N.;Sutherland, Jennifer;Johnson, Arthur E.
通讯作者: Johnson, Arthur E.