Merck Peroxidase from horseradish

Peroxidase from horseradish

Type I, essentially salt-free, lyophilized powder, ≥50 units/mg solid (using pyrogallol)

Quality Level

200

유형

Type I

form

essentially salt-free, lyophilized powder

specific activity

≥50 units/mg solid (using pyrogallol)

분자량

~44 kDa

solubility

0.1 M phosphate buffer: soluble (pH 6.0)
H2O: soluble

흡수비

RZ ≥1.0

저장 온도

2-8°C

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.