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Nanomaterials Facilitating Microbial Extracellular Electron Transfer at Interfaces
Advanced Materials, 2020AbstractElectrochemically active bacteria can transport their metabolically generated electrons to anodes, or accept electrons from cathodes to synthesize high‐value chemicals and fuels, via a process known as extracellular electron transfer (EET). Harnessing of this microbial EET process has led to the development of microbial bio‐electrochemical ...
Ruiwen Wang +6 more
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Extracellular electron transfer systems fuel cellulose oxidative degradation
Science, 2016The fuel for fungal enzymes Many microorganisms have specialized enzymes to target and break down plant biomass. In fungi, these enzymes, called lytic polysaccharide monooxygenases (LPMOs), partner with electron transfer partners to oxidatively cleave the polysaccharide backbone of lignocellulosic polymers. Kracher et
D. Kracher +8 more
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Extracellular electron transfer features of Gram-positive bacteria
Analytica Chimica Acta, 2019Electroactive microorganisms possess the unique ability to transfer electrons to or from solid phase electron conductors, e.g., electrodes or minerals, through various physiological mechanisms. The processes are commonly known as extracellular electron transfer and broadly harnessed in microbial electrochemical systems, such as microbial biosensors ...
Galina Pankratova +2 more
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Potential-dependent extracellular electron transfer pathways of exoelectrogens
Current Opinion in Chemical Biology, 2020Exoelectrogens are distinct from other bacteria owing to their unique extracellular electron transfer (EET) abilities that allow for anaerobic respiration with various external redox-active surfaces, including electrode and metal oxides. Although the EET process is known to trigger diverse extracellular redox reactions, the reverse impact has been long
Dong-Feng Liu, Wen-Wei Li
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Extracellular electron transfer explained
Open Access GovernmentExtracellular electron transfer explained Arpita Bose, PhD from Washington University in St. Louis, guides us through host-associated impacts and biotechnological applications of extracellular electron transfer in electrochemically active bacteria.
Arpita Bose, Aiden Wang
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Humic Substances and Extracellular Electron Transfer
2012Humic substances (HS) are redox-active organic molecules that are present in virtually all environments. A wide variety of bacteria including Fe(III)-reducers, sulfate reducers, methanogens, and fermenting bacteria can reduce HS and in a second, abiotic step, the reduced HS can transfer their electrons to terminal electron acceptors such as poorly ...
Annette Piepenbrock, Andreas Kappler
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Extracellular electron transfer mechanisms between microorganisms and minerals
Nature Reviews Microbiology, 2016Electrons can be transferred from microorganisms to multivalent metal ions that are associated with minerals and vice versa. As the microbial cell envelope is neither physically permeable to minerals nor electrically conductive, microorganisms have evolved strategies to exchange electrons with extracellular minerals.
Liang, Shi +7 more
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Bacterial extracellular electron transfer in bioelectrochemical systems
Process Biochemistry, 2012Abstract Bioelectrochemical systems (BES), typically microbial fuel cells (MFCs), have attracted increasing attention in the past decade due to their promising applications in many fields, such as bioremediation, energy generation and biosynthesis. Current-generating microorganisms play a key role in BES.
Yonggang Yang +3 more
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Extracellular Electron Transfer in Bioelectrochemically Active Microorganisms
2020Bioelectrochemical systems, such as microbial fuel cells and microbial electrosynthesis, are promising technology for energy generation and organic compound production. In the bioelectrochemical systems, extracellular electron transfer is essential in which c-type cytochrome, electrically conductive nanowires, and electron shuttles play key roles. This
Takashi Fujikawa, Kengo Inoue
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Microbial electrocatalysis: Redox mediators responsible for extracellular electron transfer
Biotechnology Advances, 2018Redox mediator plays an important role in extracellular electron transfer (EET) in many environments wherein microbial electrocatalysis occurs actively. Because of the block of cell envelope and the low difference of redox potential between the intracellular and extracellular surroundings, the proceeding of EET depends mainly on the help of a variety ...
Xiaobo Liu, Liang Shi, Ji-Dong Gu
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