4 years ago

In Situ Autofluorescence Spectroelectrochemistry for the Study of Microbial Extracellular Electron Transfer

In Situ Autofluorescence Spectroelectrochemistry for the Study of Microbial Extracellular Electron Transfer
Hilke Wichmann, Uwe Schröder, Jörg Overmann, Katharina Huber, Peter Jomo Walla, Boyke Bunk, Igor Schmidt, Alexander Pieper
Here, we propose the use of in situ autofluorescence spectroelectrochemistry to gain access to the mechanisms of the extracellular electron transfer (EET) of electrochemically active bacteria. By studying the spectroelectrochemical behavior of biofilms enriched with Geobacter anodireducens, we i) determine the chemical nature of the respective EET components, ii) address kinetic EET aspects, and iii) propose potential-dependent structural changes of outer membrane cytochromes during EET. Bacteria studies: In situ autofluorescence spectroelectrochemistry is proposed as a tool to study the extracellular electron transfer (EET) of electrochemically active bacteria. The chemical nature of EET components and potential-dependent structural changes of outer-membrane cytochromes are investigated.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/celc.201700675

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