title: Cathodic photocurrent generation from zinc-substituted cytochrome b562 assemblies immobilized on an apocytochrome b562-modified gold electrode.
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.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan. onoda@chem.eng.osaka-u.ac.jp thayashi@chem.eng.osaka-u.ac.jp.
authors.forename: Akira
authors.initials: A
authors.lastname: Onoda
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Kakikura
authors.forename: Takashi
authors.initials: T
authors.lastname: Hayashi
mesh_terms: D003573:Cytochrome b Group / Q000737:chemistry*; D004560:Electricity; D004566:Electrodes; D004926:Escherichia coli / Q000737:chemistry*; D029968:Escherichia coli Proteins / Q000737:chemistry*; D006046:Gold / Q000737:chemistry*; D055767:Immobilized Proteins / Q000737:chemistry*; D008958:Models, Molecular; D055668:Photochemical Processes; D015032:Zinc / Q000737:chemistry*
chemical_list: D003573:Cytochrome b Group; D029968:Escherichia coli Proteins; D055767:Immobilized Proteins; D006046:Gold; C017850:cytochrome b562, E coli; D015032:Zinc