Horseradish Peroxidase
Horseradish Peroxidase - Related Videos
05:17
Fast and Specific Assessment of the Halogenating Peroxidase Activity in Leukocyte-enriched Blood Samples
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Cited by 2 •
2016
This protocol describes the quick enrichment of leukocytes from small blood samples for a subsequent specific determination of the halogenating peroxidase activity within the cells. The method can be applied to human and non-human material and may contribute to the evaluation of new inflammatory markers.
04:36
The Examination of Peroxidase-Positive Leukocytes in Semen
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Cited by 3 •
2024
This paper presents an economical and efficient protocol for examining peroxidase-positive leukocytes in semen. With the assistance of a computer-assisted semen analysis (CASA) system, the concentration of peroxidase-positive leukocytes in semen can be obtained within a total of 60 min, effectively improving the efficiency of andrology laboratory and andrologists.
10:26
Elucidating β-1,3-Glucanase and Peroxidase Physicochemical Properties of Wheat Cell Wall Defense Mechanism Against Diuraphis noxia Infestation
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Cited by 3 •
2024
The present protocol describes procedures used to study and characterize cell wall-related enzymes, mainly β-1,3-glucanase and peroxidase, in wheat plants. Their activity levels increase during wheat-RWA interaction and are involved in the plant defense response through cell wall reinforcement, which deters aphid feeding.
02:42
RNA CISH Signal Detection: A Technique to Detect Chromogenic Signals During RNA In Situ Hybridization in Intact Tissue Specimens
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2023
This video presents the protocol for signal detection during RNA chromogenic in situ hybridization. This technique can be used to diagnose an active oncogenic infection visually in an intact tissue specimen.
03:55
ELISA-Based Method to Analyze Interactions between Bait and Prey Proteins
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2025
This video describes an ELISA-based technique that detects protein-protein interactions between two proteins by measuring the binding of the second protein to the immobilized first protein. The bound second protein is detected using specific antibodies labeled with an enzyme, such as horseradish peroxidase.
FAQs
Hydrogen peroxide serves as the input that drives HRP into reactive intermediate states. Those intermediates then oxidize suitable electron-donor substrates, linking peroxide availability to a chemical change in the substrate. Because the oxidized product can generate color, fluorescence, or chemiluminescence, this sequence converts an enzymatic reaction into a detectable signal.
The electron-donor substrate determines how HRP activity becomes observable. Suitable substrates can produce colored, fluorescent, or chemiluminescent outputs after oxidation, so the selected substrate establishes the signal modality used for detection. This flexibility allows the same enzyme chemistry to support different readout formats in analytical and bioengineering workflows.
HRP functions as a reporter when its oxidation reaction translates molecular recognition into a measurable signal. It functions as a biocatalyst when researchers use its catalytic activity to drive oxidation for a material-forming process, such as crosslinking phenol-functionalized polymers or proteins. The distinction depends on whether the desired outcome is detection or chemical construction.
A typical workflow first uses molecular recognition to associate the assay system with the target of interest. Hydrogen peroxide and a suitable electron-donor substrate then provide the conditions for HRP-mediated oxidation. The resulting color, fluorescence, or chemiluminescence is measured as the observable output, connecting target recognition with an analytical signal.
Bioengineering applications include enzyme-linked immunosorbent assays, immunostaining, biosensors, and nucleic acid detection. In each case, HRP-mediated oxidation provides a way to make a recognition event observable through color, fluorescence, or chemiluminescence. Its use therefore spans assay development, imaging-oriented workflows, sensor design, and molecular detection.
HRP-mediated oxidation can crosslink phenol-functionalized polymers and proteins, joining these components into a network rather than using the reaction only for signal generation. This strategy enables formation of hydrogels and other engineered biomaterials under mild aqueous conditions. The approach connects enzyme catalysis with material fabrication in bioengineering applications.