MOM22 is a receptor for mitochondrial targeting sequences and cooperates with MOM19.

MOM22 is a receptor for mitochondrial targeting sequences and cooperates with MOM19.
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MOM22是线粒体靶向序列的受体,并与MOM19合作。

DOI:
10.1002/j.1460-2075.1995.tb00094.x
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发表时间:
1995
期刊:
The EMBO Journal
影响因子:
--
通讯作者:
Roland Lill
Roland Lill
中科院分区:
--
文献类型:
--
作者:
Andreas Mayer;F. Nargang;Walter Neupert;Roland Lill

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靶向信号的识别是细胞内蛋白质分选的关键步骤。到目前为止,只有少数能够破译靶向信号的成分被鉴定出来,并且对信号与其受体之间相互作用的化学性质的了解很少。使用高度纯化的线粒体外膜囊泡,我们表明,MOM 22和MOM 19,外膜的蛋白质进口复合物的组成部分,结合前蛋白在线粒体表面以可逆的方式。与N-末端前序列特异性和直接发生相互作用,并在MOM 22或MOM 19失活后消除。结合是盐敏感的,这表明识别涉及前序列的正电荷和MOM 22的酸性胞质结构域之间的静电力。MOM 19和MOM 22可以高效交联。我们建议,这两种蛋白质形成一个复杂的功能作为前序列受体在线粒体表面和促进运动的前蛋白进入易位孔。
Recognition of targeting signals is a crucial step in protein sorting within the cell. So far, only a few components capable of deciphering targeting signals have been identified, and insights into the chemical nature of the interaction between the signals and their receptors are scarce. Using highly purified mitochondrial outer membrane vesicles, we demonstrate that MOM22 and MOM19, components of the protein import complex of the outer membrane, bind preproteins at the mitochondrial surface in a reversible fashion. Interaction specifically and directly occurs with the N‐terminal presequence and is abolished after inactivation of either MOM22 or MOM19. Binding is salt sensitive, suggesting that recognition involves electrostatic forces between the positive charges of the presequence and the acidic cytosolic domain of MOM22. MOM19 and MOM22 can be cross‐linked with high efficiency. We propose that the two proteins form a complex which functions as the presequence receptor at the mitochondrial surface and facilitates the movement of preproteins into the translocation pore.
DOI: 10.1016/s0021-9258(19)84657-4
发表时间: 1989-10
期刊: The Journal of biological chemistry
影响因子: --
作者:
M. Drygas;A. Lambowitz;F. Nargang
通讯作者: M. Drygas;A. Lambowitz;F. Nargang
DOI: --
发表时间: 1991
期刊: The Journal of biological chemistry
影响因子: --
作者:
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DOI: 10.1002/j.1460-2075.1993.tb06095.x
发表时间: 1993-11-01
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影响因子: 11.4
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通讯作者: SCHATZ, G
通过“屏蔽 RIP”技术使编码线粒体蛋白输入受体 MOM19 的粗糙脉孢菌基因失活。
DOI: 10.1093/genetics/136.1.107
发表时间: 1994
期刊: Genetics
影响因子: 3.3
作者:
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通讯作者: Nargang,FE