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Enzyme-Based Biosensors: Tackling Electron Transfer Issues.

Paolo Bollella1, Evgeny Katz1

  • 1Department of Chemistry and Biomolecular Science, Clarkson University, Potsdam, New York, NY 13699-5810, USA.

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Summary
This summary is machine-generated.

This review explores electron transfer (ET) in redox enzymes, crucial for biosensors and enzymatic fuel cells (EFCs). It clarifies direct electron transfer (DET) mechanisms and highlights glucose oxidase

Keywords:
direct electron transfer (DET)enzyme-based biosensorsnanostructured electrodesprotein film voltammetry (PFV)redox enzymes

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Area of Science:

  • Bioelectrochemistry
  • Enzyme kinetics
  • Biosensor technology

Background:

  • Electron transfer (ET) reactions in redox enzymes are fundamental to electroanalytical devices.
  • Understanding ET mechanisms is key for developing biosensors and enzymatic fuel cells (EFCs).
  • Direct electron transfer (DET) in enzymes is a critical area of study for bioelectrochemical applications.

Purpose of the Study:

  • To review the fundamentals of electron transfer (ET) in redox enzymes.
  • To provide theoretical guidelines on direct electron transfer (DET) for researchers.
  • To discuss methodologies for investigating ET and its future applications.

Main Methods:

  • Review of established theories of electron transfer, including Marcus theory and Laviron's model.
  • Analysis of paradigms in protein/enzyme ET, such as ET mechanisms and distances.
  • Examination of experimental tools and methodologies for studying enzyme ET.

Main Results:

  • Clarification of ET mechanisms in redox enzymes, with a focus on direct electron transfer (DET).
  • Correction of the classification of glucose oxidase (GOx) regarding its direct electron transfer capabilities.
  • Overview of available tools for investigating ET phenomena in bioelectrochemical systems.

Conclusions:

  • Electron transfer fundamentals are essential for advancing biosensors and enzymatic fuel cells (EFCs).
  • Further research into bioelectrochemistry and ET mechanisms will drive practical applications.
  • Development of new methodologies is crucial for tackling complex ET issues in enzymes.