Mimivirus-Encoded Nucleotide Translocator VMC1 Targets the Mitochondrial Inner Membrane.

Mimivirus-Encoded Nucleotide Translocator VMC1 Targets the Mitochondrial Inner Membrane.
复制标题

拟菌病毒编码的核苷酸易位子VMC1靶向线粒体内膜

DOI:
10.1016/j.jmb.2018.09.012
复制
发表时间:
2018
影响因子:
5.6
通讯作者:
Rassow
Rassow
中科院分区:
生物学2区
文献类型:
--
作者:
Ferramosca;Günnewig;Kreimendahl;Schwichtenberg;Sträter;Ҫakar;Guidato;Palmieri;Rassow

文献摘要

参考文献

被引文献

相似文献

Mimi病毒(棘阿米巴多食模拟病毒)是在阿米巴物种中发现的第一个巨型DNA病毒。它的基因组至少包含979个基因。其中L276编码一个核苷酸转运子,与线粒体代谢物载体相似,暂时命名为病毒线粒体载体1(VMC1)。在这项研究中,我们研究了VMC1在HeLa细胞和酵母中表达后在细胞内的分布。我们发现VMC1特异性地定位于线粒体和线粒体内膜。新合成的VMC1与线粒体外膜蛋白Tom70结合,并通过β-Barrel蛋白Tom40形成的输入通道转运。Tom40-乙基马来酰亚胺内四个半胱氨酸残基的衍生化导致了移位的延迟,但不是完全闭塞。VMC1不降低细胞存活率。线粒体膜电位和细胞内活性氧的产生均未受到影响。与内源性代谢物载体类似,拟态病毒编码的VMC1似乎是线粒体内膜上的一种特异性转运体。由于其对脱氧核糖核苷酸的渗透性,VMC1为线粒体提供了一个为复制病毒的大DNA基因组贡献核苷酸的机会。
Mimivirus (Acanthamoeba polyphaga mimivirus) was the first giant DNA virus identified in an amoeba species. Its genome contains at least 979 genes. One of these,L276, encodes a nucleotide translocator with similarities to mitochondrial metabolite carriers, provisionally named viral mitochondrial carrier 1 (VMC1). In this study, we investigated the intracellular distribution of VMC1 upon expression in HeLa cells and in the yeast Saccharomyces cerevisiae. We found that VMC1 is specifically targeted to mitochondria and to the inner mitochondrial membrane. Newly synthesized VMC1 binds to the mitochondrial outer-membrane protein Tom70 and translocates through the import channel formed by the β-barrel protein Tom40. Derivatization of the four cysteine residues inside Tom40 byN-ethylmaleimide caused a delay in translocation but not a complete occlusion. Cell viability was not reduced by VMC1. Neither the mitochondrial membrane potential nor the intracellular production of reactive oxygen species was affected. Similar to endogenous metabolite carriers, mimivirus-encoded VMC1 appears to act as a specific translocator in the mitochondrial inner membrane. Due to its permeability for deoxyribonucleotides, VMC1 confers to the mitochondria an opportunity to contribute nucleotides for the replication of the large DNA genome of the virus.
人前列腺上皮细胞质膜柠檬酸转运蛋白的分子起源
DOI: --
发表时间: 2010
期刊: EMBO Reports
影响因子: 7.7
作者:
Maciej P. Mazurek;P. Prasad;E. Gopal;S. P. Fraser;L. Bolt;Nahit Rizaner;C. Palmer;C. Foster;F. Palmieri;V. Ganapathy;W. Stühmer;M. Djamgoz;M. Mycielska
通讯作者: M. Mycielska
人 PMP34 的鉴定和表征,该蛋白与博伊丁假丝酵母的过氧化物酶体整合膜蛋白 PMP47 密切相关。
DOI: 10.1046/j.1432-1327.1998.2580332.x
发表时间: 1998
期刊: European journal of biochemistry
影响因子: --
作者:
T. Wylin;M. Baes;C. Brees;G. Mannaerts;M. Fransen;P. Veldhoven
通讯作者: P. Veldhoven
DOI: 10.1016/s0022-2836(02)00995-6
发表时间: 2002-11-01
影响因子: 5.6
作者:
Motz, C;Martin, H;Rassow, J
通讯作者: Rassow, J
线粒体载体超家族过氧化物酶体 Ca2 依赖性成员的分子克隆。
影响因子: 11.1
作者:
F. E. Weber;G. Minestrini;J. Dyer;M. Werder;D. Boffelli;S. Compassi;E. Wehrli;R. Thomas;G. Schulthess;H. Hauser
通讯作者: H. Hauser
DOI: 10.1016/0014-5793(90)81469-5
发表时间: 1990-11-26
期刊: FEBS LETTERS
影响因子: 3.5
作者:
RASSOW, J;HARTL, FU;NEUPERT, W
通讯作者: NEUPERT, W