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Human anamorsin was implicated in cytosolic iron-sulfur (Fe/S) protein biogenesis. Here, the structural and metal-binding properties of anamorsin and its interaction with Mia40, a well-known oxidoreductase involved in protein trapping in the mitochondrial intermembrane space (IMS), were characterized. We show that (1), anamorsin contains two structurally independent domains connected by an unfolded...
Background: Cytochrome c has five distinct pH-dependent conformational states, including two alkaline forms of unknown structure. It is believed that in both of the alkaline forms a Lys residue is ligated to the heme, but the identity of the Lys residue is different. Exchange between these forms would require extensive structural rearrangement. Mutation of the heme axial ligand (Met80) to Ala in Saccharomyces...
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