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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

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charlotte.PNG

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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Written by Maria Carmen Jimenez Arevalo

Date of update September 11, 2017

Communauté Université Grenoble Alpes