2022
DOI: 10.1101/2022.09.26.509156
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Residual Complex I activity supports glutamate catabolism and mtSLP via canonical Krebs cycle activity during acute anoxia without OXPHOS

Abstract: Anoxia halts oxidative phosphorylation (OXPHOS) causing hyper-reduction of mitochondrial matrix redox compounds which impedes dehydrogenases. By simultaneously measuring oxygen concentration, NADH autofluorescence, mitochondrial membrane potential and ubiquinone redox state in organello in real-time, we show that Complex I utilized endogenous quinones to oxidize NADH under acute anoxia. Untargeted or [U-13C]glutamate-targeted metabolomic analysis of matrix and effluxed metabolites extracted during anoxia and i… Show more

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