Electrochemical Analysis of Biomacromolecular Interactions
Summary
Electrochemical analysis has emerged as a powerful approach for probing the interactions, conformational dynamics and functional behaviour of biomacromolecules such as proteins, peptides and nucleic acids. By translating molecular binding events into measurable electrical signals, these techniques enable sensitive, real-time monitoring of association and dissociation processes, redox transformations and proton-transfer phenomena. Classical three-electrode cells and microchip-based sensors alike exploit voltammetry, chronopotentiometry and impedance spectroscopy to characterise electron‐ and proton-transfer kinetics, surface adsorption phenomena and the effects of external electric fields on macromolecular structure. Incorporation of redox-active labels or intrinsically electroactive residues permits selective detection, while advances in electrode modification broaden the scope to whole-cell assays, membrane proteins and supramolecular assemblies. Computational chemistry methods increasingly complement experimental data, facilitating the interpretation of interfacial charge distribution and guiding the design of bespoke electrodes. Together, these developments underscore the global significance of electrochemical platforms for diagnostic biosensors, drug-screening tools and environmental monitoring devices, offering rapid, low-cost and adaptable formats for fundamental and applied biomolecular research.
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Electrochemical Analysis of Biomacromolecular Interactions publication trend
The graph below shows the total number of articles in electrochemical analysis of biomacromolecular interactions across all publications each year (not limited to Nature Index journals).
Technical terms
Voltammetry: Electrochemical technique measuring current as a function of applied potential to probe redox processes and binding events.
Chronopotentiometry: Method in which a constant current is applied and the resulting potential change is monitored to study adsorption and phase transitions.
Electrochemical Impedance Spectroscopy (EIS): Frequency-dependent measurement of impedance to characterise interfacial charge transfer and diffusion kinetics.
Redox Probe: Molecule or label that undergoes reversible oxidation–reduction, used to generate an electrochemical signal upon binding.
Chemisorption: Strong, often covalent, attachment of a molecule to an electrode surface, influencing electron-transfer properties.
Proton-Wire: A chain of hydrogen-bonded donor and acceptor sites within a peptide or protein that facilitates directional proton transfer.
References
- Electrochemistry in sensing of molecular interactions of proteins and their behavior in an electric field. Microchimica Acta (2023).
- Cysteamine Chemisorption at Mercury–Solution Interfaces in the Context of Redox and Microdissociation Equilibria. Langmuir (2024).
- Electrocatalytic monitoring of peptidic proton-wires. Analyst (2016).
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