Reference: Salinas T, et al. (2008) Recent advances in tRNA mitochondrial import. Trends Biochem Sci 33(7):320-9

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Abstract


In many eukaryotes, tRNA import from the cytosol into mitochondria is essential for mitochondrial biogenesis and, consequently, for cell viability. Recent work has begun to unravel the molecular mechanisms involved in tRNA transport in yeast, trypanosomatids and plants. The mechanisms of tRNA targeting to, and translocation through, the double mitochondrial membrane in addition to how selectivity and regulation of these processes are achieved are the main questions that have been addressed. The characterization of both direct and co-import mechanisms involving distinct protein-import factors is in agreement with a polyphyletic origin of tRNA import. Moreover, our increased understanding of the tRNA-import pathway has been exploited recently to rescue dysfunctions associated with mitochondrial tRNA mutations.

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Journal Article
Authors
Salinas T, Duchene AM, Marechal-Drouard L
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