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Directed import of macromolecules into mitochondria

  • General Problems of Molecular Biology
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Abstract

Mitochondria are multifunctional eukaryotic organelles that provide cells with energy via oxidative phosphorylation. They participate in the formation of Fe-S clusters, oxidation of fatty acids, and synthesis of certain amino acids and play an important role in apoptosis. Mitochondria have their own genome and are able to transcribe and translate it. However, most macromolecules functioning in mitochondria, such as proteins and some small RNAs, are imported from the cytoplasm. Protein import into mitochondria is a universal process, and its mechanism is very similar in all eukaryotic cells. Today this mechanism is known in detail. At the same time, the RNA import was discovered only in several eukaryotic groups. Nevertheless, it is proposed that this process is typical for most species. A set of imported RNA molecules varies in different organisms. Although the knowledge about the mechanisms of RNA import is less extensive than that of protein import, it becomes clear that these mechanisms greatly differ between different species. The review summarizes information about the import of such macromolecules into mitochondria.

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Authors and Affiliations

  1. Molecular Biology Department, Faculty of Biology, Moscow State University, Moscow, 119992, Russia

    P. A. Kamenski & I. A. Krasheninnikov

  2. UMR 7156 “Genetique Moleculaire, Genomique, Microbiologie”, CNRS-ULP, Strasbourg, 67084, France

    P. A. Kamenski & I. A. Tarassov

  3. Institut de Biologie Moleculaire des Plantes CNRS, Strasbourg, 67084, France

    E. N. Vinogradova

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  1. P. A. Kamenski
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Original Russian Text © P.A. Kamenski, E.N. Vinogradova, I.A. Krasheninnikov, I.A. Tarassov, 2007, published in Molekulyarnaya Biologiya, 2007, Vol. 41, No. 2, pp. 216–233.

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Kamenski, P.A., Vinogradova, E.N., Krasheninnikov, I.A. et al. Directed import of macromolecules into mitochondria. Mol Biol 41, 187–202 (2007). https://doi.org/10.1134/S0026893307020021

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  • DOI: https://doi.org/10.1134/S0026893307020021

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