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Direct Bioelectrocatalysis by NADP-Reducing Hydrogenase from Pyrococcus furiosus

Oleg G. Voronin, Daan J. Van Haaster, Elena E. Karyakina, Wilfred R. Hagen, Arkady A. Karyakin*

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

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 languageEnglish
Pages (from-to)2264-2266
Number of pages3
JournalElectroanalysis
Volume19
Issue number21
DOIs
Publication statusPublished - 2007

Keywords

  • Bioelectrocatalysis
  • Enzyme electrode
  • Hydrogen equilibrium potential
  • Hydrogenase
  • NAD(P)

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