Mmm1p, a mitochondrial outer membrane protein, is connected to mitochondrial DNA (mtDNA) nucleoids and required for mtDNA stability.

Mmm1p, a mitochondrial outer membrane protein, is connected to mitochondrial DNA (mtDNA) nucleoids and required for mtDNA stability.
复制标题

MMM1P是一种线粒体外膜蛋白,与线粒体DNA(mtDNA)核苷连接,并需要mtDNA稳定性。

DOI:
10.1083/jcb.152.2.401
复制
发表时间:
2001-01-22
期刊:
The Journal of cell biology
影响因子:
--
通讯作者:
Jensen RE
Jensen RE
中科院分区:
其他
文献类型:
--
作者:
Hobbs AE;Srinivasan M;McCaffery JM;Jensen RE

文献摘要

参考文献

被引文献

相似文献

在酿酒酵母中,线粒体在细胞外围形成一个分枝的管状网状结构。Mmm1p是维持正常线粒体形状所必需的,在mmm1突变体中,线粒体形成大的球形细胞器。为了进一步探索Mmm1p的功能,我们检测了活细胞中Mmm1p -绿色荧光蛋白(GFP)融合的定位。我们发现Mmm1p-GFP位于线粒体外膜上的小点状结构中,毗邻基质定位的线粒体DNA类核子集。我们还发现,温度敏感的mmm1-1突变体在转移到限制性温度后立即将线粒体DNA传递给子细胞时存在缺陷。正常线粒体类核结构在非允许温度下也以类似的动力学崩溃。此外,我们发现线粒体内膜结构在mm1断裂菌株中明显混乱。我们认为Mmm1p是线粒体内外膜连接的一部分,将线粒体DNA类核固定在基质中。
In the yeast Saccharomyces cerevisiae, mitochondria form a branched, tubular reticulum in the periphery of the cell. Mmm1p is required to maintain normal mitochondrial shape and in mmm1 mutants mitochondria form large, spherical organelles. To further explore Mmm1p function, we examined the localization of a Mmm1p–green fluorescent protein (GFP) fusion in living cells. We found that Mmm1p-GFP is located in small, punctate structures on the mitochondrial outer membrane, adjacent to a subset of matrix-localized mitochondrial DNA nucleoids. We also found that the temperature-sensitive mmm1-1 mutant was defective in transmission of mitochondrial DNA to daughter cells immediately after the shift to restrictive temperature. Normal mitochondrial nucleoid structure also collapsed at the nonpermissive temperature with similar kinetics. Moreover, we found that mitochondrial inner membrane structure is dramatically disorganized in mmm1 disruption strains. We propose that Mmm1p is part of a connection between the mitochondrial outer and inner membranes, anchoring mitochondrial DNA nucleoids in the matrix.
DOI: 10.1083/jcb.139.7.1663
发表时间: 1997-12-29
期刊: The Journal of cell biology
影响因子: --
作者:
Kerscher O;Holder J;Srinivasan M;Leung RS;Jensen RE
通讯作者: Jensen RE
DOI: 10.1083/jcb.126.6.1375
发表时间: 1994-09
期刊: The Journal of cell biology
影响因子: --
作者:
Burgess SM;Delannoy M;Jensen RE
通讯作者: Jensen RE
DOI: 10.1083/jcb.136.3.545
发表时间: 1997-02-10
影响因子: 7.8
作者:
Berger, KH;Sogo, LF;Yaffe, MP
通讯作者: Yaffe, MP
DOI: 10.1073/pnas.140063197
发表时间: 2000-07-05
影响因子: 11.1
作者:
Kaufman, BA;Newman, SM;Butow, RA
通讯作者: Butow, RA
DOI: 10.1083/jcb.109.6.2603
发表时间: 1989-12
期刊: The Journal of cell biology
影响因子: --
作者:
Pon L;Moll T;Vestweber D;Marshallsay B;Schatz G
通讯作者: Schatz G