ChemPhysChem

Cover image for Vol. 16 Issue 11

Editor: Greta Heydenrych; Editorial Board Chairs: Christian Amatore, Michael Grätzel, Michel Orrit

Impact Factor: 3.419

ISI Journal Citation Reports © Ranking: 2014: 7/34 (Physics Atomic Molecular & Chemical); 41/139 (Chemistry Physical)

Online ISSN: 1439-7641

Associated Title(s): Advanced Materials, ChemBioChem, ChemCatChem, ChemElectroChem, ChemSusChem, Small

12_04/2011Cover Picture: Electron Transfer between Genetically Modified Hansenula polymorpha Yeast Cells and Electrode Surfaces via Os-complex modified Redox Polymers (ChemPhysChem 4/2011)

The cover picture depicts the possible electron-transfer pathway between genetically modified Hansenula polymorpha yeast cells and an electrode surface via Os-complex modified redox polymers. The recombinant cells overexpress flavocytochrome b2 (FC b2), which is involved in l-lactate oxidation within the mitochondria. Overproduction of FC b2 seems to enhance the ability of the cells to exchange charges with extracellular electron acceptors across the membrane. Close contact of the Os-complex modified polymer to the cell wall appears to be a prerequisite for the transfer of electrons from the intracellular FC b2/l-lactate catalytic cycle to an electrode surface and suggests the critical involvement of a plasma membrane located redox system. On p. 806 W. Schuhmann et al. give insight into the functioning of the yeast-cell-based bioelectrochemical electron-transfer pathway. The authors thank Dr. M. Gebala for designing the picture.

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