Reference: Da-Rè C, et al. (2014) Functional characterization of drim2, the Drosophila melanogaster homolog of the yeast mitochondrial deoxynucleotide transporter. J Biol Chem 289(11):7448-59

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Abstract


The CG18317 gene (drim2) is the Drosophila melanogaster homolog of the Saccharomyces cerevisiae Rim2 gene, which encodes a pyrimidine (deoxy)nucleotide carrier. Here, we tested if the drim2 gene also encodes for a deoxynucleotide transporter in the fruit fly. The protein was localized to mitochondria. Drosophila S2R(+) cells, silenced for drim2 expression, contained markedly reduced pools of both purine and pyrimidine dNTPs in mitochondria, whereas cytosolic pools were unaffected. In vivo drim2 homozygous knock-out was lethal at the larval stage, preceded by the following: (i) impaired locomotor behavior; (ii) decreased rates of oxygen consumption, and (iii) depletion of mtDNA. We conclude that the Drosophila mitochondrial carrier dRIM2 transports all DNA precursors and is essential to maintain mitochondrial function.

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Journal Article | Research Support, Non-U.S. Gov't
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Da-Rè C, Franzolin E, Biscontin A, Piazzesi A, Pacchioni B, Gagliani MC, Mazzotta G, Tacchetti C, Zordan MA, Zeviani M, ... Show all
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