Direct electrochemistry of cytochrome bo3 oxidase at a series of gold nanoparticles-modified electrodes

Frederic Melin, Thomas Meyer, Styven Lankiang, Sylvia K. Choi, Robert B. Gennis, Christian Blanck, Marc Schmutz, Petra Hellwig

Research output: Contribution to journalArticle


New membrane-protein based electrodes were prepared incorporating cytochrome bo3 from Escherichia coli and gold nanoparticles. Direct electron transfer between the electrode and the immobilized enzymes was achieved, resulting in an electrocatalytic activity in presence of O 2. The size of the gold nanoparticles was shown to be important and smaller particles were shown to reduce the overpotential of the process.

Original languageEnglish (US)
Pages (from-to)105-108
Number of pages4
JournalElectrochemistry Communications
Issue number1
StatePublished - Jan 1 2013


  • Direct electron transfer
  • Electrocatalysis
  • Gold nanoparticles
  • Membrane protein

ASJC Scopus subject areas

  • Electrochemistry

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