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Direct electron transfer between a chemically, viologen‐modified glassy‐carbon electrode and ferredoxins from spinach and Megasphaera elsdenii
Author(s) -
van Dijk Cees,
van Eijs Ton,
van Leeuwen Johan W.,
Veeger Cees
Publication year - 1984
Publication title -
febs letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.593
H-Index - 257
eISSN - 1873-3468
pISSN - 0014-5793
DOI - 10.1016/0014-5793(84)80048-4
Subject(s) - spinach , ferredoxin , electron transfer , chemistry , library science , biochemistry , computer science , photochemistry , enzyme
Direct reversible electron transfer between an electrode and ferredoxins has been described by several authors [l-8]. Recently, we have shown that at the dropping mercury electrode the efficiency of reduction of both 4Fe-4FS and 2Fe-2S ferredoxins can be enhanced drastically [8]. This increase in reduction efficiency was obtained by addition of a positively charged polymer or surfactant to the negatively charged ferredoxins, indicating that electrostatic effects play an important, if not a predominating role. Authors in [5,6] have reported on the reduction and oxidation of spinach ferredoxin at a gold electrode on which a polymeric form of methyl viologen was adsorbed. Authors in [7] have described the direct reversible