Peroxidase from horseradish by Merck KGaA, Darmstadt, Germany

Manufacturer Merck KGaA, Darmstadt, Germany  |   Model: P8375  |  Available Worldwide
Type VI, essentially salt-free, lyophilized powder, ?250 units/mg solid (using pyrogallol)


Peroxidase from horseradish by Merck KGaA, Darmstadt, Germany product image
Peroxidase from horseradish
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Merck KGaA, Darmstadt, Germany

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Horseradish peroxidase is isolated from horseradish roots (Amoracia rusticana) and belongs to the ferroprotoporphyrin group of peroxidases. HRP is a single chain polypeptide containing four disulfide bridges. It is a glycoprotein containing 18% carbohydrate. The carbohydrate composition consists of galactose, arabinose, xylose, fucose, mannose, mannosamine, and galactosamine depending upon the specific isozyme. Its molecular weight (~44 kDa) includes the polypeptide chain (33,890 Daltons), hemin plus Ca2+ (~700 Daltons), and carbohydrate (~9,400 Daltons). At least seven isozymes of HRP exist. The isoelectric point for horseradish peroxidase isozymes ranges from 3.0 - 9.0.