Peroxidase, ~300 purpurogallin U/mg solid
Key Features and Details
SYNONYMS: HRP; Donor:hydrogen-peroxide oxidoreductase; E.C. 18.104.22.168; Horseradish peroxidase; Peroxidase from horseradish; Hydrogen peroxide oxidoreductase
CAS: # 9003-99-0
EC No: 232-668-6
MDL No: MFCD00071339
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Peroxidase Application Notes Horseradish peroxidase (HRP) is used in biochemistry applications such as western blots, ELISA and Immunohistochemistry. Horseradish peroxidase is used to amplify a weak signal and increase detectability of a target molecule, such as a protein. It is an essentially salt free lyophilized powder. It is commonly used to determine amounts of glucose and peroxides in solution. It has been used in an aspergillus fumigatus rapid susceptibility assay. HRP can be conjugated to antibodies by several different methods including glutaraldehyde, periodate oxidation, through disulfide bonds, and also via amino and thiol directed cross-linkers. HRP is the most desired label for antibodies, since it is the smallest and most stable of the three most popular enzyme labels (HRP, ß-galactosidase, and alkaline phosphatase) and its glycosylation leads to lower non-specific binding. A review of glutaraldehyde and periodate conjugation methods has been published. HRP labeled immunoglobulins are used as probes for the demonstration of tissue antigens and in enzyme immunoassay (EIA) systems for determination of soluble and insoluble antigens. It is also useful for tracing neural connections. These include motor and sensory innervation of peripheral organs, and connections of peripheral nerves, ganglia and individual dorsal roots. Usage Statement Unless specified otherwise, MP Biomedical's products are for research or further manufacturing use only, not for direct human use. For more information, please contact our customer service department.
Base Catalog Number: 150038
Alternate Names: HRP; Donor:hydrogen-peroxide oxidoreductase; E.C. 22.214.171.124; Horseradish peroxidase; Peroxidase from horseradish; Hydrogen peroxide oxidoreductase
Biochemical Physiological Actions : When incubated with a substrate, horseradish peroxidase produces a coloured, fluorimetric, or luminescent derivative of the labeled molecule, allowing quantification. Horseradish peroxidase has been shown to slightly reduce the level of inhibition in a cydAB mutant. Known inhibitors are sodium azide, cyanide, L-cystine, dichromate, ethylenethiourea, hydroxylamine, sulfide, vanadate, p-aminobenzoic acid, and Cd2+, Co2+, Cu2+, Fe3+, Mn2+, Ni2+, and Pb2+ ions.
CAS : # 9003-99-0
EC No : 232-668-6
Extinction Coefficient : 100 (403 nm)(Lit.)
Format : Crystalline powder
Isoelectric Point : 3.0 - 9.0(Lit.)
MDL No : MFCD00071339
PPE : Eyeshields, Gloves, respirator filter
Source : Horseradish (Amoracia rusticana)
Specific Activity : ~300 purpurogallin u/mg solid
Specificity : Activity is observed with H2O2; MeOOH and EtOOH.
Unit Definition : That amount of enzyme causing the production of one mg of purpurogallin in 20 seconds at 20 °C.