THE NATURE OF IRON IN FERREDOXIN
- 1 June 1964
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences
- Vol. 51 (6) , 1085-1092
- https://doi.org/10.1073/pnas.51.6.1085
Abstract
The magnetic susceptibility and Mbssbauer spectra of ferredoxin indicate that all 7 Fe atoms are strong-field ferric but that they exist in 2 structurally nonequivalent environments. The chemical studies on ferredoxin indicate that the Fe atoms are distributed into 2 structurally nonequivalent states of populations of 2 and 5 and that there are at least 2 ferric atoms in ferredoxin. A model for the active site of ferredoxin is proposed in which the 7 Fe atoms are arranged linearly and are bound together via S bridges furnished by the 7 cysteine residues and 6 inorganic sulfide atoms.Keywords
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