Cathodic photocurrent generation from zinc-substituted cytochrome b562 assemblies immobilized on an apocytochrome b562-modified gold electrode

Akira Onoda; Yasuaki Kakikura; Takashi Hayashi

doi:10.1039/C3DT51469B

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Cathodic photocurrent generation from zinc-substituted cytochromeb₅₆₂ assemblies immobilized on an apocytochrome b₅₆₂-modified gold electrode

Akira Onoda,*^a Yasuaki Kakikura^a and Takashi Hayashi*^a

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* Corresponding authors

^a Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
E-mail: onoda@chem.eng.osaka-u.ac.jp, thayashi@chem.eng.osaka-u.ac.jp
Fax: +81-6-6879-7930
Tel: +81-6-6879-7928

Abstract

Hierarchical assemblies of the noteworthy photoactive cytochrome b₅₆₂ reconstituted with zinc protoporphyrin IX covalently linked with the protein surface were constructed on a gold electrode modified with an apoprotein of cytochrome b₅₆₂. The integrated photoactive hemoproteins were characterized by electrochemical impedance and quartz crystal microbalance analyses. The protein-immobilized electrode exhibits enhanced photocurrent generation relative to the one having a Zn-substituted hemoprotein monolayer.

This article is part of the themed collection: Coordination Programming: Science of Molecular Superstructures Towards Chemical Devices

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Article information

DOI: https://doi.org/10.1039/C3DT51469B
Article type: Paper
Submitted: 03 Jun 2013
Accepted: 16 Aug 2013
First published: 16 Aug 2013
This article is Open Access

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Dalton Trans., 2013,42, 16102-16107

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Cathodic photocurrent generation from zinc-substituted cytochrome b₅₆₂ assemblies immobilized on an apocytochrome b₅₆₂-modified gold electrode

A. Onoda, Y. Kakikura and T. Hayashi, Dalton Trans., 2013, 42, 16102 DOI: 10.1039/C3DT51469B

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Dalton Transactions