title: Photocurrent generation from hierarchical zinc-substituted hemoprotein assemblies immobilized on a gold electrode.
abstract: All connected: a protein-immobilized electrode comprising hierarchical assemblies of photoactive cytochrome b(562) reconstituted with zinc protoporphyrin IX exhibits remarkably enhanced photocurrent generation relative to an electrode bearing a single zinc-substituted hemoprotein layer. The protein oligomers, which bear a covalently linked protoporphyrin group, assemble by a supramolecular heme/heme pocket interaction.
authors.affiliation: Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Japan.
authors.forename: Akira
authors.initials: A
authors.lastname: Onoda
authors.forename: Yasuaki
authors.initials: Y
authors.lastname: Kakikura
authors.forename: Taro
authors.initials: T
authors.lastname: Uematsu
authors.forename: Susumu
authors.initials: S
authors.lastname: Kuwabata
authors.forename: Takashi
authors.initials: T
authors.lastname: Hayashi
mesh_terms: D045303:Cytochromes b / Q000737:chemistry / Q000235:genetics / Q000378:metabolism; D004566:Electrodes; D006046:Gold / Q000737:chemistry*; D006420:Hemeproteins / Q000737:chemistry / Q000378:metabolism*; D055767:Immobilized Proteins / Q000737:chemistry / Q000378:metabolism; D055668:Photochemical Processes; D011524:Protoporphyrins / Q000737:chemistry; D058525:Quartz Crystal Microbalance Techniques; D015032:Zinc / Q000737:chemistry*
chemical_list: D006420:Hemeproteins; D055767:Immobilized Proteins; D011524:Protoporphyrins; C017803:zinc protoporphyrin; D006046:Gold; D045303:Cytochromes b; D015032:Zinc