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DIRECT ELECTROCHEMISTRY OF THE PHOTOSYNTHETIC BLUE COPPER PROTEIN PLASTOCYANIN - ELECTROSTATIC PROMOTION OF RAPID CHARGE-TRANSFER AT AN EDGE-ORIENTED PYROLYTIC-GRAPHITE ELECTRODE

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 (<5 mM) or by mild acidification (pH 4-6) of the medium closely parallels in vivo regulatory characteristics for plastocyanin at the thylakoid membrane. The edge face of pyrolytic graphite, subjected to standard polishing procedures in air, contains a vari...

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Publication status:
Published

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Publisher copy:
10.1021/ja00292a004

Authors


ARMSTRONG, F More by this author
WHITFORD, D More by this author
Journal:
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume:
107
Issue:
6
Pages:
1473-1476
Publication date:
1985
DOI:
ISSN:
0002-7863
URN:
uuid:bbcb7871-5efa-4259-8230-8feed8495e8e
Source identifiers:
42384
Local pid:
pubs:42384
Language:
English

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