Abstract
The direct bioelectrocatalysis by an NAD(P)-reducing hydrogenase is reported for the first time. In contrast to previous attempts to involve similar enzymes in bioelectrocatalysis [1-4], which were in fact unsuccessful, in our report an effective electrocatalysis by Pyrococcus furiosus hydrogenase is convincingly shown by (i) achievement of the hydrogen equilibrium potential and (ii) a high current of hydrogen oxidation (0.3 mA cm-2 at 100 mV overpotential and at 75°C). The latter is just a few times lower compared to enzyme electrodes based on NAD(P)-independent hydrogenases.
Original language | English |
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Pages (from-to) | 2264-2266 |
Number of pages | 3 |
Journal | Electroanalysis |
Volume | 19 |
Issue number | 21 |
DOIs | |
Publication status | Published - Nov 2007 |
Keywords
- Bioelectrocatalysis
- Enzyme electrode
- Hydrogen equilibrium potential
- Hydrogenase
- NAD(P)