Rieske iron protein movement

Consilient Mechanisms for Electron Transfer/Proton Transport Reside in the Movement of the Rieske Iron Protein FeS Center... 

Movement of Rieske Iron Protein, Both Metaphorically and Literally, Represents a Movable Cusp of Insolubility... 

Tian, H., White, S., Yu, L., and Yu, C. A., 1999, Evidence for the head domain movement of the rieske iron-sulfur protein in electron transfer reaction of the cytochrome bcl complex, J. Biol. Chem. 274 7146n7152. 

Now that it is substantiated that the [2Fe 2S] domain of the Rieske iron-sulfur protein is not static but moves between domains of cytochrome-c, and cytochrome-/ subunits, and that it is likely that such movement may provide a novel mechanism to allow catalysis of all the reactions involved in the oxidation of hydroquinone at the Qo site and the subsequent bifurcated pathway of electron transfer. It has been found that during the movement, the mobile [2Fe 2S] domain retains essentially the same tertiary structure, and the anchoring N-terminal tail of the R-ISP molecule remains in the same fixed position. The movement occurs through an extension of a helical segment in the short linking span. 

AR Crofts, S Hong, Z Zhang and EA Berry (1999) Physicochemical aspects of the movement of the Rieske iron sulfur protein during quinol oxidation by the bci complex from mitochondria and photosynthetic bacteria. Biochemistry 38 15827-15839... 

---