pp. 377-381
S&M1076 Research Paper of Special Issue https://doi.org/10.18494/SAM.2015.1097 Published: June 8, 2015 Effective Electron Transfer of Self-Assembled Redox-Active Peptide with an Affinity for Glucose Oxidase [PDF] Shu Taira, Kenji Yokoyama, Daisaku Kaneko, Natsuki Yamaguchi and Tatsuro Endo (Received December 22, 2014; Accepted January 21, 2015) Keywords: redox-active peptide, glucose oxidase, biosensor, Fmoc solid-phase peptide synthesis, self-assembled monolayer
We describe the synthesis of a self-assembled redox-active peptide (RAP), which has an affinity for flavin adenine dinucleotide (FAD) as an electron acceptor, as well as its electrochemical characterization as a biosensor. We synthesized N-ferrocene and C-cysteine-terminated RAP (L-H-P-P-M-D-F-H-L-A-M-T-R-εAhx-C) by Fmoc solid-phase peptide synthesis. The C-cysteine-terminated RAP was immobilized on a gold electrode by the self-assembled monolayer method. It exhibited a stable electrochemical response after several potential sweeps. The FAD-captured RAP recognized glucose oxidase on the electrode surface. Current increased as the concentration of glucose increased. The self-assembled RAP-immobilized electrode effectively measures the electron transfer between the substrate and the enzyme; thus, it is suitable as a biosensor material.
Corresponding author: Tatsuro EndoCite this article Shu Taira, Kenji Yokoyama, Daisaku Kaneko, Natsuki Yamaguchi and Tatsuro Endo, Effective Electron Transfer of Self-Assembled Redox-Active Peptide with an Affinity for Glucose Oxidase, Sens. Mater., Vol. 27, No. 5, 2015, p. 377-381. |