nucleic acids into mitochondria addressing.

The present invention relates to a shuttle system for importing nucleic acid of interest into a mitochondrion. This system is based on the use of a fusion protein between a mitochondrial targeting sequence and a protein binding a nucleic acid of interest. The shuttle system is useful, for example, in the agricultural field, in the field of gene therapy, and as part of research projects to characterize the function of mitochondrial genes.