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- W2747742031 abstract "Abstract Copper ions play a major role in biological processes. Abnormal Cu 2+ ions concentrations are associated with various diseases, hence, can be used as diagnostic target. Monitoring copper ion is currently performed by non-portable, expensive and complicated to use equipment. We present a label free and a highly sensitive electrochemical ion-detecting biosensor based on a Gly-Gly-His tripeptide layer that chelate with Cu 2+ ions. The proposed sensing mechanism is that the chelation results in conformational changes in the peptide that forms a denser insulating layer that prevents RedOx species transfer to the surface. This chelation event was monitored using various electrochemical methods and surface chemistry analysis and supported by theoretical calculations. We propose a highly sensitive ion-detection biosensor that can detect Cu 2+ ions in the pM range with high SNR parameter." @default.
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- W2747742031 date "2017-08-25" @default.
- W2747742031 modified "2023-10-01" @default.
- W2747742031 title "Copper Induced Conformational Changes of Tripeptide Monolayer Based Impedimetric Biosensor" @default.
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- W2747742031 doi "https://doi.org/10.1038/s41598-017-10288-z" @default.
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