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Photocurrent generation from hierarchical zinc-substituted hemoprotein assemblies immobilized on a gold electrode
Authors:Onoda Akira  Kakikura Yasuaki  Uematsu Taro  Kuwabata Susumu  Hayashi Takashi
Affiliation:Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Japan.
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.
Keywords:cytochromes  hemoproteins  host–guest systems  photochemistry  porphyrinoids
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