Fig. 6

Hypothetical schematic of potential causes and effects of p9 methylation in neurodegeneration. (1) Nuclear encoded genetic variants may be causal for p9 hypermethylation within neuronal mitochondria, resulting in onset or exacerbation of electron transport chain dysfunction. (2) Subsequent mitochondrial dysfunction may lead to altered downstream nuclear gene expression via retrograde signaling resulting in (3) changes to various molecular and cellular processes that further contribute to neurodegenerative pathology