Electron transfer process in microbial electrochemical technologies: the role of cell-surface exposed conductive proteins

Nazua L. Costa, Thomas A. Clarke, Laura-Alina Philipp, Johannes Gescher, Ricardo O. Louro, Catarina M. Paquete

Research output: Contribution to journalArticlepeer-review

44 Citations (Scopus)
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Abstract

Electroactive microorganisms have attracted significant interest for the development of novel biotechnological systems of low ecological footprint. These can be used for the sustainable production of energy, bioremediation of metal-contaminated environments and production of added-value products. Currently, almost 100 microorganisms from the Bacterial and Archaeal domains are considered electroactive, given their ability to efficiently interact with electrodes in microbial electrochemical technologies. Cell-surface exposed conductive proteins are key players in the electron transfer between cells and electrodes. Interestingly, it seems that among the electroactive organisms identified so far, these cell-surface proteins fall into one of four groups. In this review, the different types of cell-surface conductive proteins found in electroactive organisms will be overviewed, focusing on their structural and functional properties.
Original languageEnglish
Pages (from-to)308-317
JournalBioresource Technology
Volume255
Early online date31 Jan 2018
DOIs
Publication statusPublished - May 2018

Keywords

  • Extracellular electron transfer
  • Cell-surface exposed conductive proteins
  • Multiheme c-type cytochromes
  • Electroactive bacteria
  • Microbial electrochemical technologies

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