Extracellular Electron Transfer: Mechanisms and Opportunities
| Extracellular electron transfer allows electrons to traverse the cell envelope to couple intra- and extra-cellular redox processes. This process underpins bacterial colonisation of diverse habitats and provides opportunities for bioremediation and biotechnologies for sustainable production of electricity, fuels and valued chemicals. This meeting presented and debated the latest developments in our understanding of the biochemistry that underpins extracellular electron transfer. It reviewed the state-of-the-art in utilising this behaviour for sustainable technologies and identified the primary biochemical challenges to be met for the informed development of opportunities in this area. |
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Organizers:
Julea Butt (University of East Anglia, United Kingdom)
Thomas Clarke (University of East Anglia, United Kingdom)
Jochen Blumberger (University College London, United Kingdom)
Monday 21 August 2017
12:00 – 13:30 Lunch and Registration
13:30 – 13:45 Introduction and Welcome
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Multiheme Cytochromes IMonday 21 August 2017
13:45 – 14:15
Structural & biochemical characterization of the extracellular terminal reductases of Shewanella
Marcus Edwards (University of East Anglia, United Kingdom)
14:15 – 14:30
Extracellular electron transfer: Return of the Flavin
Selected Oral Communication- Jeffrey Gralnick (University of Minnesota, USA)
14:30 – 14:45
Iron oxide reduction by Geobacter sulfurreducens requires triheme cytochrome PgcA
Selected Oral Communication- Lori Zacharoff (University of Southern California, USA)
14:45 – 15:15
Exploring the electron transfer processes performed by the nanowire protein GSU1996 from Geobacter sulfurreducens
Catarina Paquete (ITQB-UNL, Portugal)
15:15 – 15:45 Tea/ Coffee Break
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Computational ApproachesMonday 21 August 2017
15:45 – 16:15
Toward a theory of electron bifurcation
David Beratan (Duke University , U.S.A.)
16:15 – 16:45
Electronic couplings for molecular charge transfer: ferro- and antiferromagnetically coupled systems
Adam Kubas (Polish Academy of Sciences, Warsaw)
16:45 – 17:00
Numerical simulations of ultrafast photoinduced electron transfers in animal (6-4) photolyases
Selected Oral Communication- Aurélien de la Lande (University of Paris-Sud, France)
17:00 – 17:30
Heme-heme electron transfer rates in multi-heme proteins: experiment and simulation
Jochen Blumberger (University College London, United Kingdom)
17:30 – 18:00 Flash Poster Presentations
18:00 – 19:15 Poster Session 1
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Microbe:Electrode Interface ITuesday 22 August 2017
09:00 – 09:30
From single molecules to cells and beyond: Electrochemical, tomographic, and computational studies of extracellular electron transport conduits
Mohamed El-Naggar (University of Southern California, U.S.A.)
09:30 – 09:45
Ligation of riboflavin functionalizes outer-membrane cytochromes complex as biological diode in Geobacter sulfurreducens PCA
Selected Oral Communication- Yoshihide Tokunou (The University of Tokyo, Japan)
09:45 – 10:00
Electrochemical Study of the Extracellular Electron Transfer of Wild Type and Mutants of Enterococcus faecalis to Electrodes
Selected Oral Communication- Lo Gorton (Lund University, Sweden)
10:00 – 10:15
Paving the way to elucidate the extracellular electron transfer mechanisms in Geobacter sulfurreducens
Selected Oral Communication- Joana Dantas (UCIBIO-Requimte, FCT-UNL, Portugal)
10:15 – 10:30
The Pcc Extracellular Electron Transfer Pathways of the Iron-reducing Bacterium Geobacter sulfurreducens
Selected Oral Communication- Liang Shi (China University of Geosciences, China)
10:30 – 11:00 Tea/ Coffee Break
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Microbe:Electrode Interface IITuesday 22 August 2017
11:00 – 11:30
Evidence for specificity in the many outer membrane electron transfer pathways of Geobacter
Daniel Bond (University of Minnesota, U.S.A.)
11:30 – 11:45
New roles of flavins and iron in taxis and extracellular electron transfer of Shewanella oneidensis MR-1
Selected Oral Communication- Lars Jeuken (University of Leeds, United Kingdom)
11:45 – 12:00
Rapid and quantitative assessment of redox conduction across electroactive biofilms by using double potential step chronoamperometry
Selected Oral Communication- Antonin Prévoteau (Ghent University, Belgium)
12:00 – 12:15
The other guys: characterization of weak electroactive biofilms
Selected Oral Communication- Enrico Marsili (Nanyang Technological University, Singapore)
12:15 – 13:30 Lunch
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Biomolecular Electronics ITuesday 22 August 2017
13:30 – 14:00
Efficient Electronic Transport across Proteins; mostly riddles, some insights
David Cahen (Weizmann Institute of Science, Israel)
14:00 – 14:30
From biocatalysis to artificial catalysis: opportunities for capitalizing on extracellular electron transport
Agostino Migliore (Duke University, USA)
14:30 – 14:45
Mimicking Extracellular Electron Transfer by Protein-Based Molecularly Doped Mats
Selected Oral Communication- Nadav Amdursky (Israel Institute of Technology, Israel)
14:45 – 15:00
Electronic coupling calculations on heterogeneous interfaces between molecules and metal / semiconductor electrodes
Selected Oral Communication- Zdenek Futera (University College London, United Kingdom)
15:00 – 15:30 Tea/ Coffee Break
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Materials Synthesis & Electrosynthesis ITuesday 22 August 2017
15:30 – 16:00
Redox Processes in Nuclear Clean-Up and Disposal: Underpinning Science and Implications for the Biobarrier Concept.
Katherine Morris (University of Manchester, United Kingdom)
16:00 – 16:15
Rate of extracellular electron transfer in Geobacter sulfurreducens
Selected Oral Communication- Bernd Giese (University of Fribourg, Switzerland)
16:15 – 16:30
Electron transfer pathways in a multihemecytochrome MtrF
Selected Oral Communication- Hiroshi Watanabe (The University of Tokyo, Japan)
16:30 – 17:45 Poster Session 2
19:30 Conference Dinner
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Biomolecular Electronics IIWednesday 23 August 2017
09:00 – 09:30
NADPH oxidases as electrochemical generators to produce ion fluxes and turgor in fungi, plants and humans
AW Segal (University College London, United Kingdom)
09:30 – 09:45
Extracellular Electron Transport of Outer-Membrane Flavocytochrome Complex Couples with Rate-limiting Proton Transport
Selected Oral Communication- Akihiro Okamoto (National Institute of Material Sciences, Japan)
09:45 – 10:00
A model for biological electron transport over centimeter-scale distances in cable bacteria
Selected Oral Communication- Filip Meysman (University of Antwerp, Belgium)
10:00 – 10:30
Photosynthetic organisms and extracellular electron transfer
Christopher Howe (University of Cambridge, United Kingdom)
10:30 – 11:00 Tea/ Coffee Break
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Materials Synthesis & Electrosynthesis IIWednesday 23 August 2017
11:00 – 11:15
Knockout Sudoku of Esoteric Microbes for Sustainable Energy
Selected Oral Communication- Buz Barstow (Princeton University, USA)
11:15 – 11:30
I do it my way – an unusual mechanism of electron uptake in a methanogen
Selected Oral Communication- Florian Mayer (DECHEMA Research Institute, Germany)
11:30 – 12:00
Throwing light on multiheme cytochromes
Julea Butt (University of East Anglia, United Kingdom)
12:00 – 12:15 Closing remarks
12:15 Lunch and Depart
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