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[[Image:Bielefeld Germany Mediator principal.jpg|center|thumb|250px|'''Figure 1:''' Principle of electron transfer from bacteria to anode via mediators as electron shuttle.]] | [[Image:Bielefeld Germany Mediator principal.jpg|center|thumb|250px|'''Figure 1:''' Principle of electron transfer from bacteria to anode via mediators as electron shuttle.]] | ||
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Of great interest is the production of endogenous mediators. The overexpression of glyceroldehydrogenase in E. coli is a promising approach. Because many derivates of glyceroldehydrogenase are small, water-soluble redoxmolecules, they have the properties of a mediator. Futhermore, it will be tested, if there is a possibility of expressing the mediator phenazin. Phenazin is an endogenous mediator of Pseudomonas species.
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