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Article Abstract
Coenzyme F is recognized as a crucial electron carrier in methane-generating metabolism but, beyond this, has garnered significant attention for its role in diverse microbial physiologies and relevance in industrial, medical, and environmental applications. However, one limitation of current application of F is the necessity of chemical electron donors for its reduction. In this study, an electrochemical reaction system was designed to facilitate electron transfer between the electrode and F using F-dependent sulfite reductase (Fsr) as the catalyst and benzyl viologen (BV) as the redox mediator. Photometric analysis and cyclic potential scanning demonstrated that the occurrence of bidirectional (reversible) electrochemical oxidation and reduction of F in this system depended on the electrode potential. The formal redox potential of F in this system was -540 mV vs. Ag|AgCl|sat. KCl, which aligned with values previously determined using biochemical assays.
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| http://dx.doi.org/10.1016/j.bioelechem.2025.108922 | DOI Listing |
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