Mammalian frataxin directly enhances sulfur transfer of NFS1 persulfide to both ISCU and free thiols.

Mammalian frataxin directly enhances sulfur transfer of NFS1 persulfide to both ISCU and free thiols. Aubérie Parent, Xavier Elduque, David Cornu, Laura Belot, Jean-Pierre Le Caer, Anna Grandas, Michel B. Toledano, Benoit D’Autréaux; Nature Communications 6, doi:10.1038/ncomms6686, Published 19 January 2015

These data raise important questions on the physiological mechanism of Fe-S cluster assembly and point to a unique function of ​frataxin as an enhancer of sulfur transfer within the ​NFS1–​ISD11–​ISCU complex.