Direct Electrochemistry of the Photosynthetic Blue Copper Protein

Hill, B. Nigel Oliver, and David Whitford. Contribution from the Inorganic Chemistry Laboratory, Oxford University, Oxford OX1 3QR,. United Kingdom. R...
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J . A m . Chem. SOC.1985, 107, 1473-1476

1473

Direct Electrochemistry of the Photosynthetic Blue Copper Protein Plastocyanin. Electrostatic Promotion of Rapid Charge Transfer at an Edge-Oriented Pyrolytic Graphite Electrode Fraser A. Armstrong,* H. Allen 0. Hill, B. Nigel Oliver, and David Whitford Contribution from the Inorganic Chemistry Laboratory, Oxford University, Oxford OX1 3QR, United Kingdom. Received October 8, 1984

Abstract: Direct (unmediated) electrochemistry of the photosynthetic “blue” copper protein plastocyanin may be readily achieved at an edge-oriented pyrolytic graphite electrode over the pH range 4-8. Promotion of rapid charge transfer by Mg2+ ions (