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- W2057262523 abstract "A strategy of metallizing peptides to serve as conduits of electronic signals that bridge between a redox enzyme and a carbon-nanotube electrode has been developed with enhanced results. In conjunction, a protocol to link the biological elements to the tips of carbon nanotubes has been developed to optimize contact and geometry between the redox enzyme and the carbon nanotube electrode array. A peptide nanowire of 33 amino acids, comprised of a leucine zipper motif, was mutated to bind divalent metals, conferring conductivity into the peptide. Reaction between a thiolate of the peptide with the sulfenic acid of the NADH peroxidase enzyme formed a peptide–enzyme assembly that are fully primed to transduce electrons out of the enzyme active site to an electrode. Scanning electron microscopy shows immobilization and linking of the assembly specifically to the tips of carbon nanotube electrodes, as designed. Isothermal titration calorimetry and mass spectrometry indicate a binding stoichiometry of at least three metals bound per peptide strand. Overall, these results highlight the gain that can be achieved when the signal tranducing units of a biosensor are aligned through directed peptide chemistry." @default.
- W2057262523 created "2016-06-24" @default.
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- W2057262523 date "2007-11-01" @default.
- W2057262523 modified "2023-09-23" @default.
- W2057262523 title "Peptide nanowires for coordination and signal transduction of peroxidase biosensors to carbon nanotube electrode arrays" @default.
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- W2057262523 doi "https://doi.org/10.1016/j.bios.2007.06.019" @default.
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