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Paper by Charlotte Vendrely 2017

Published on September 11, 2017
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Communique July 21, 2017

The paper "A synthetic redox biofilm made from metalloprotein–prion domain chimera nanowires" has been published in Nature Chemistry

Here you will find the paper by Charlotte Vendrely

"Engineering bioelectronic components and set-ups that mimic natural systems is extremely challenging. Here we report the design of a protein-only redox film inspired by the architecture of bacterial electroactive biofilms. The nanowire scaffold is formed using a chimeric protein that results from the attachment of a prion domain to a rubredoxin (Rd) that acts as an electron carrier. The prion domain self-assembles into stable fibres and provides a suitable arrangement of redox metal centres in Rd to permit electron transport. This results in highly organized films, able to transport electrons over several micrometres through a network of bionanowires. We demonstrate that our bionanowires can be used as electron-transfer mediators to build a bioelectrode for the electrocatalytic oxygen reduction by laccase. This approach opens opportunities for the engineering of protein-only electron mediators (with tunable redox potentials and optimized interactions with enzymes) and applications in the field of protein-only bioelectrodes."

 



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Date of update September 11, 2017

Université Grenoble Alpes