mRNA-binding protein involved in proper cytoplasmic distribution of mitochondria. Specifically binds mRNAs of nuclear-encoded mitochondrial proteins in the cytoplasm and regulates transport or translation of these transcripts close to mitochondria, playing a role in mitochondrial biogenesis. A fraction colocalizes with tyrosinated tubulin and can be detected close to mitochondria. Belongs to the CLU family. Truncated N-terminus.