Structural and functional roles of the conserved cysteine residues of the redox-regulated import receptor Mia40 in the intermembrane space of mitochondria.

Abstract excerpt

Oxidative folding drives the import of proteins containing twin CXnC motifs into the intermembrane space of mitochondria. This import pathway employs a disulfide relay system whose key components are the redox-regulated import receptor Mia40 and the thiol oxidase Erv1. Mia40 contains six cysteine residues in a CPC-CX9C-CX9C arrangement in a highly conserved domain. We show that this domain is sufficient for the...

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