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• W2068055404 abstract "A simple sensing assay was established for label-free detection of HIV-1 protease. HIV-1 protease peptide substrate conjugated to magnetic beads via its N-terminus is directly fixed onto the sensor gold surface through the sulphur atom of cysteine. Surface plasmon resonance (SPR) was used to study the peptide substrate cleavage efficiency of the protease with magnetic beads of different sizes (1 μm and 30 nm). Cyclic voltammetry and faradic impedance spectroscopy were employed in order to characterize the functionalized gold electrode. It was found that the nano-sized beads are a more efficient sensing probe for the protease. Electrochemical biosensing showed a gradual decrease in charge transfer resistance after injection of the HIV-1 protease. The experimental data established a detection limit of 10 pg/ml, as well as demonstrated a drug screening assay. This HIV-1 protease biosensor represents a new detection approach which will lead to low-cost point-of-care devices for sensitive HIV-1 diagnosis, as well as high-throughput drug screening platforms." @default.
• W2068055404 created "2016-06-24" @default.
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• W2068055404 date "2013-03-01" @default.
• W2068055404 modified "2023-09-23" @default.
• W2068055404 title "A novel and rapid assay for HIV-1 protease detection using magnetic bead mediation" @default.
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• W2068055404 doi "https://doi.org/10.1016/j.bios.2012.08.049" @default.
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• W2068055404 hasPublicationYear "2013" @default.
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