A new idea that elucidates the electron carrier ability of plastocyanin (and of azurin) is proposed. It emphasizes the fact that two lobes of the d-orbital, where one unpaired electron of copper (II) ion lies, are not screened by the ligand atoms, which would facilitate the electron transfer between the d-orbital and the redox partners (cytochrom f and P-700 in the case of plastocyanin). Several evidences which support the above proposal are provided.
Received: 1987-4-27
Published Online: 2014-6-2
Published in Print: 1987-12-1
© 1946 – 2014: Verlag der Zeitschrift für Naturforschung
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