mitochondrial degradosome https://github.com/geneontology/go-ontology/issues/29281 mtEXO A mitochondrial protein complex with 3' to 5' exoribonuclease activity that participates in intron-independent turnover and processing of mitochondrial transcripts. In humans, the mitochondrial degradosome is a pentameric complex, and in yeast it exists as a heterodimer. cellular_component GO:0045025 mitochondrial protein-containing complex exoribonuclease complex