Kinetics of electron transfer between cytochromes c' and the semiquinones of free flavin and clostridial flavodoxin.

@article{Meyer1986KineticsOE,
  title={Kinetics of electron transfer between cytochromes c' and the semiquinones of free flavin and clostridial flavodoxin.},
  author={Terry E. Meyer and G Cheddar and R. G. Bartsch and Elizabeth D. Getzoff and Michael A. Cusanovich and Gordon Tollin},
  journal={Biochemistry},
  year={1986},
  volume={25 6},
  pages={1383-90}
}
Rate constants have been measured for the reactions of a series of high-spin cytochromes c' and their low-spin homologues (cytochromes c-554 and c-556) with the semiquinones of free flavins and flavodoxin. These cytochromes are approximately 3 times more reactive with lumiflavin and riboflavin semiquinones than are the c-type cytochromes that are homologous to mitochondrial cytochrome c. We attribute this to the greater solvent exposure of the heme in the c'-type cytochromes. In marked contrast… CONTINUE READING