Magnetic-field-induced orientation of fructose dehydrogenase on iron oxide nanoparticles for enhanced direct electron transfer
| Autor: | Aleksandra Rękorajska, Renata Bilewicz, Michal Kizling, Paweł Krysiński |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
02 engineering and technology
Overpotential 010402 general chemistry 021001 nanoscience & nanotechnology Photochemistry Electrochemistry 01 natural sciences 0104 chemical sciences lcsh:Chemistry chemistry.chemical_compound Electron transfer Paramagnetism chemistry lcsh:Industrial electrochemistry lcsh:QD1-999 Electrode Differential pulse voltammetry 0210 nano-technology Heme human activities Iron oxide nanoparticles lcsh:TP250-261 |
| Zdroj: | Electrochemistry Communications, Vol 93, Iss, Pp 66-70 (2018) |
| ISSN: | 1388-2481 |
| Popis: | We present electrochemical evidence that magnetic interactions between the paramagnetic heme centers of fructose dehydrogenase subunit II and superparamagnetic iron oxide nanoparticles enable a suitable orientation of the enzyme molecule and enhance the rate of direct electron transfer. This enhancement of the rate of DET resulting from the appropriate orientation was examined with differential pulse voltammetry. The closer approach of the heme sites to the electrode results in a decreased fructose oxidation overpotential, a smaller Michaelis–Menten constant and an overall improvement in electrode performance in the presence of an external magnetic field. Keywords: Bioelectrocatalysis, Iron oxide nanoparticles, Fructose dehydrogenase, Magnetic field, Direct electron transfer |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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