Summary of specific activities and redox potentials of the Rieske clusters of the NT-26 wild type and mutant enzymes.

aAverage activity of at least two assays from two independent enzyme purifications.bData presented from one representative experiment. The results were the same in a separate experiment with independent enzyme preparations.cThe equivalent of this specific mutation has not been tested in the bc1 complex Rieske but all mutations removing the disulphide bridge result in a redox potential decrease [16], [18].