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Biophysical Journal 7: 615-620 (1967)
© 1967 the Biophysical Society

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A Mössbauer Study of Ferri- and Ferrocytochrome c

Patrick Mcdermott, Leopold May and Joseph Orlando

ABSTRACT

The Mössbauer spectra of horse heart ferri- and ferrocytochrome c were obtained at room temperature using lyophilized powders. The Mössbauer data indicate that the iron in both lyophilized samples is in a low-spin state. The high quadrupole splittings suggest that the iron atom is in an asymmetric ligand field. Upon reduction the asymmetry increases, suggesting a change in the bonding between the protein moieties and the iron atom.






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Copyright © 1967 by the Biophysical Society.