Transcriptomics

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ATAD3A has a scaffolding role regulating mitochondria inner membrane structure and protein assembly


ABSTRACT: The ATPase Family AAA Domain Containing 3A (ATAD3A) is a mitochondrial inner membrane protein conserved in metazoans. ATAD3A has been associated with several mitochondrial functions, including nucleoid organization, cholesterol metabolism, and mitochondrial translation. To address its primary role, we generated a neuronal-specific conditional knockout (Atad3 nKO) mouse model, which developed a severe encephalopathy by 5 months of age. Pre-symptomatic mice showed aberrant mitochondrial cristae morphogenesis in the cortex as early as 2 months. Using a multi-omics approach in the CNS of 2-3-month-old mice, we found early alterations in the organelle membrane structure. We also showed that human ATAD3A associates with different components of the inner membrane, including: OXPHOS complex I, Letm1 and prohibitin complexes. Stochastic Optical Reconstruction Microscopy (STORM) showed that ATAD3A is regularly distributed along the inner mitochondrial membrane, suggesting a critical structural role in inner mitochondrial membrane and its organization, most likely in an ATPase-dependent manner.

ORGANISM(S): Mus musculus

PROVIDER: GSE186409 | GEO | 2021/12/30

REPOSITORIES: GEO

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