Monothiol glutaredoxins can bind linear [Fe3S4]+ and [Fe4S4]2+ clusters in addition to [Fe2S2]2+ clusters: spectroscopic characterization and functional implications.

  title={Monothiol glutaredoxins can bind linear [Fe3S4]+ and [Fe4S4]2+ clusters in addition to [Fe2S2]2+ clusters: spectroscopic characterization and functional implications.},
  author={Bo Zhang and Sibali Bandyopadhyay and Priyanka Shakamuri and Sunil G. Naik and Boi Hanh Huynh and J{\'e}r{\'e}my Couturier and Nicolas Rouhier and Michael K. Johnson},
  journal={Journal of the American Chemical Society},
  volume={135 40},
Saccharomyces cerevisiae mitochondrial glutaredoxin 5 (Grx5) is the archetypical member of a ubiquitous class of monothiol glutaredoxins with a strictly conserved CGFS active-site sequence that has been shown to function in biological [Fe2S2](2+) cluster trafficking. In this work, we show that recombinant S. cerevisiae Grx5 purified aerobically, after prolonged exposure of the cell-free extract to air or after anaerobic reconstitution in the presence of glutathione, predominantly contains a… 

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