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MIB Seminar: Engineering Microorganisms that Create and Communicate with Materials

Dates:17 January 2017
Times:16:00 - 17:00
What is it:Seminar
Organiser:Department of Materials
Speaker:Dr Ajo-Franklin's
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  • By Department of Materials

Dr. Ajo-Franklin's research group uses biophysics and synthetic biology to engineer and explore the nanoscale interface between living microbes and inorganic materials. We are particularly interested in the basic mechanisms underlying charge transfer and assembly of materials at this living/non-living interface. In the first part of my talk, I will describe how we have engineered bi-directional electronic communication between living microbes and non-living systems using synthetic biology. By transplanting extracellular electron transfer pathways into the industrial organism Escherichia coli, we can confer upon these cells a molecularly-defined route to both accept and donate electrons to electrodes. Both current production and current consumption shift the metabolism of E. coli in well-defined ways, demonstrating that this electronic interface can control intracellular state. In the second part of my talk, I will describe how we have used surface-layer (S-layer) proteins as a programmable material. S-layer proteins form a highly ordered crystalline, yet porous, layer on the outermost cell surface of most species of bacteria and archaea. By engineering S-layers on the surface of different microorganisms, we can create arrays that modulate both the binding and mineralization of inorganic materials.

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Dr Ajo-Franklin's

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