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- W4382398960 abstract "In olfactory research, odorant-binding proteins (OBPs) are promising candidates for developing biomimetic systems. In this paper, we designed an impedance sensing system by utilizing OBPs of honeybee as sensing membrane to detect molecules. Its responses to odorants of isoamyl acetate and butanedione were recorded by impedance spectroscopy. The relative decrease of charge transfer resistance of the sensing concentration was optimized from 10-9 M to 10-4 M. Sensitivity and selectivity of the sensor were investigated from different proteins, ligands and electrodes. To explore molecular recognition processes of the olfactory sensor, the tertiary structure of OBPs was modeled and the odorants were docked into its special hydrophobic cavity. The correlations between the conformational changes of the protein and impedance spectrum changes of the biosensor were discussed with a theoretical mode. The results suggested that the OBPs-based olfactory sensor could dynamically detect the specific ligand-protein interactions. The biomimetic design that made full use of the conformational change properties could provide a sensitive, low-cost, real-time, label-free and ease of operating approach for chemicals detection. If needed, the approach could be applied to other proteins, which shows attractive potential for biotechnological applications." @default.
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- W4382398960 date "2015-07-01" @default.
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- W4382398960 title "Biomimetic Olfactory Sensor for Dynamically and Conveniently Monitoring Ligands Binding to Odorant-Binding Proteins with Impedance Sensing" @default.
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- W4382398960 doi "https://doi.org/10.1016/s1452-3981(23)17276-2" @default.
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