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FARAFARA Cure FA

Binding of yeast frataxin to the scaffold for Fe-S cluster biogenesis, Isu

Friedreich ataxia is caused by reduced activity of frataxin, a conserved iron-binding protein of the mitochondrial matrix, thought to supply iron for formation of Fe-S clusters on the scaffold protein Isu. Frataxin binds Isu in an iron-dependent manner in vitro. However, the biological relevance of this interaction and whether in vivo the interaction between frataxin and Isu is mediated by adaptor proteins is a matter of debate. Here, we report that alterations of conserved, surface-exposed residues of yeast frataxin, which have deleterious effects on cell growth, impair Fe-S cluster biogenesis and interaction with Isu while altering neither iron binding nor oligomerization.

Read More: Binding of yeast frataxin to the scaffold for Fe-S cluster biogenesis, Isu

About the Author

Jen Farmer

Jen Farmer

Executive Director

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