Horseradish peroxidase (HRP) is a 40 kDa protein that catalyzes substrate oxidation by hydrogen peroxide to produce colored or fluorescent products or release light as a byproduct of the reaction. It is most commonly used in western blotting, immunoassays, and immunohistochemical methods. Maclura pomifera lectins (MPL/MPA) are coupled to HRP in appropriate proportions to provide optimal staining properties.
For research use only, not for clinical use.