Yeast cytochrome c peroxidase. Coordination and spin states of heme prosthetic group.

@article{Yonetani1987YeastCC,
  title={Yeast cytochrome c peroxidase. Coordination and spin states of heme prosthetic group.},
  author={Takashi Yonetani and H Anni},
  journal={The Journal of biological chemistry},
  year={1987},
  volume={262 20},
  pages={9547-54}
}
Electronic absorption and electron paramagnetic resonance (EPR) spectroscopic examinations revealed that a freshly prepared cytochrome c peroxidase (CCP) contains a penta-coordinated high spin ferric protoheme group. The penta-coordinated high spin state of fresh CCP is maintained in a remarkably wide range of pH (4-8). The freezing of fresh CCP induces the reversible coordination of an internal strong field ligand to the heme iron to form a hexa-coordinated low spin compound, which shows EPR… CONTINUE READING

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