Direct electrical communication between chemically modified enzymes and metal electrodes. I. Electron transfer from glucose oxidase to metal electrodes via electron relays, bound covalently to the enzyme

1987 ◽  
Vol 91 (6) ◽  
pp. 1285-1289 ◽  
Author(s):  
Y. Degani ◽  
Adam. Heller
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Metal Electrodes ◽  
Chemically Modified ◽  
Electron Relays

Oxygen Isotope Effects on Electron Transfer to O2Probed Using Chemically Modified Flavins Bound to Glucose Oxidase

2004 ◽  
Vol 126 (46) ◽  
pp. 15120-15131 ◽  
Author(s):  
Justine P. Roth ◽  
Roseanne Wincek ◽  
Gabrielle Nodet ◽  
Dale E. Edmondson ◽  
William S. McIntire ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Oxygen Isotope ◽  
Isotope Effects ◽  
Chemically Modified

scholarly journals Oxygen Isotope Effects on Electron Transfer to O2Probed Using Chemically Modified Flavins Bound to Glucose Oxidase [J. Am. Chem. Soc.2004,126, 15120−15131].

2005 ◽  
Vol 127 (15) ◽  
pp. 5727-5727 ◽  
Author(s):  
Justine P. Roth ◽  
Roseanne Wincek ◽  
Gabrielle Nodet ◽  
Dale E. Edmondson ◽  
William S. McIntire ◽  
...  
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Oxygen Isotope ◽  
Isotope Effects ◽  
Chemically Modified

scholarly journals Electrochemical Response of Glucose Oxidase Adsorbed on Laser-Induced Graphene

Nanomaterials ◽  
2021 ◽  
Vol 11 (8) ◽  
pp. 1893
Author(s):  
Sónia O. Pereira ◽  
Nuno F. Santos ◽  
Alexandre F. Carvalho ◽  
António J. S. Fernandes ◽  
Florinda M. Costa
Keyword(s):  
Electron Transfer ◽  
Glucose Oxidase ◽  
Ph Dependence ◽  
High Surface ◽  
High Surface Area ◽  
Cost Effective ◽  
Great Promise ◽  
Glucose Detection ◽  
Half Wave ◽  
Electrochemical Transducers

Carbon-based electrodes have demonstrated great promise as electrochemical transducers in the development of biosensors. More recently, laser-induced graphene (LIG), a graphene derivative, appears as a great candidate due to its superior electron transfer characteristics, high surface area and simplicity in its synthesis. The continuous interest in the development of cost-effective, more stable and reliable biosensors for glucose detection make them the most studied and explored within the academic and industry community. In this work, the electrochemistry of glucose oxidase (GOx) adsorbed on LIG electrodes is studied in detail. In addition to the well-known electroactivity of free flavin adenine dinucleotide (FAD), the cofactor of GOx, at the expected half-wave potential of −0.490 V vs. Ag/AgCl (1 M KCl), a new well-defined redox pair at 0.155 V is observed and shown to be related to LIG/GOx interaction. A systematic study was undertaken in order to understand the origin of this activity, including scan rate and pH dependence, along with glucose detection tests. Two protons and two electrons are involved in this reaction, which is shown to be sensitive to the concentration of glucose, restraining its origin to the electron transfer from FAD in the active site of GOx to the electrode via direct or mediated by quinone derivatives acting as mediators.

Direct electron transfer in immobilized flavoenzyme chemically modified graphite electrodes

1982 ◽  
Vol 141 ◽  
pp. 23-32 ◽  
Author(s):  
Robert M. Ianniello ◽  
Thomas J. Lindsay ◽  
Alexander M. Yacynych
Keyword(s):  
Electron Transfer ◽  
Direct Electron Transfer ◽  
Graphite Electrodes ◽  
Chemically Modified
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