Although confirmed as the primary lipophilic antioxidant molecule endogenously produced by cells, the non-mitochondrial pool of CoQ10's functional role is still well debated. Recently, both Bersuker et al. (2019) and Doll et al. (2019) have identified FSP1 as a novel CoQ10 plasma membrane oxidoreductase, protecting cells from glutathione-independent ferroptosis.
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