Facile electrochemical affinity measurements of small and large molecules

Pouya Zaree, Ilhan Tomris, Sander D. de Vos, Roosmarijn van der Woude, Frits M. Flesch, Robertus J.M. Klein Gebbink, Robert P. de Vries, Roland J. Pieters*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

Abstract

A novel miniaturized sensor for electrochemical detection that contains graphene- and gold nanoparticles was functionalized with proteins. Using cyclic voltammetry (CV) and differential pulse voltammetry (DPV) it was possible to observe and quantify interactions of molecules with these proteins. The protein binders included carbohydrate ligands as small as carbohydrates up to COVID-19 spike protein variants engaged in protein-protein interactions. The system uses off-the-shelf sensors combined with an affordable potentiostat and yet is sensitive enough for small ligand binding.

Original languageEnglish
Pages (from-to)9756-9760
Number of pages5
JournalRSC Advances
Volume13
Issue number14
DOIs
Publication statusPublished - 27 Mar 2023

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