Mutations in Fis1 disrupt orderly disposal of defective mitochondria

Abstract excerpt

Mitochondrial fission is mediated by the dynamin-related protein Drp1 in metazoans. Drp1 is recruited from the cytosol to mitochondria by the mitochondrial outer membrane protein Mff. A second mitochondrial outer membrane protein, named Fis1, was previously proposed as recruitment factor, but Fis1(-/-) cells have mild or no mitochondrial fission defects. Here we show that Fis1 is nevertheless part of the...

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