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Autophagy is a conserved pathway that delivers cytoplasmic contents to the lysosome for degradation. Here we consider its roles in neuronal health and disease. We review evidence from mouse knockout studies demonstrating the normal functions of autophagy as a protective factor against neurodegeneration associated with intracytoplasmic aggregate-prone protein accumulation as well as other roles, including...
The UbiB protein kinase-like (PKL) family is widespread, comprising one-quarter of microbial PKLs and five human homologs, yet its biochemical activities remain obscure. COQ8A (ADCK3) is a mammalian UbiB protein associated with ubiquinone (CoQ) biosynthesis and an ataxia (ARCA2) through unclear means. We show that mice lacking COQ8A develop a slowly progressive cerebellar ataxia linked to Purkinje...
Coenzyme Q, or ubiquinone, is an endogenously synthesized lipid-soluble antioxidant that plays a major role in the mitochondrial respiratory chain. Although extensively studied for decades, recent data on coenzyme Q have painted an exciting albeit incomplete picture of the multiple facets of this molecule's function. In humans, mutations in the genes involved in the biosynthesis of coenzyme Q lead...
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