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Updated: Jan 24, 2026

Analyzing DNA-Protein Interactions with Streptavidin-Based Biolayer Interferometry
Published on: January 17, 2025
A simple, real-time assay of horseradish peroxidase using biolayer interferometry
Takaaki Kojima1, Ayako Nakane1, Bo Zhu1
1Graduate School of Bioagricultural Sciences, Nagoya University , Chikusa-ku, Nagoya , Japan.
Abstract:
Horseradish peroxidase (HRP) isoenzyme C1a is one of the most widely used enzymes for various analytical methods in bioscience research and medical fields. In these fields, real-time monitoring of HRP activity is highly desirable because the utility of HRP as a reporter enzyme would be expanded. In this study, we developed a simple assay system enabling real-time monitoring of HRP activity by using biolayer interferometry (BLI). The HRP activity was quantitatively detected on a BLI sensor chip by tracing a binding response of tyramide, a substrate of HRP, onto an immobilized protein. This system could be applied to analyses related to oxidase activity, as well as to the functional analysis of recombinant HRP.
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