產品描述
概述
Lactoperoxidase (LPO) is a glycoprotein with a hemin prosthetic group which may occur as a mixture of two isozymes. It has a molecular weight of 77,500 daltons. LPO catalyzes the hydrogen peroxide oxidation of iodide according to the following reaction: 2I- + H2O2 + 2H+ → I2 + 2H2O. Iodide reacts directly with the heme group; upon addition of H2O2 the complex iodinates the substrate. LPO is inhibited by hydrazines. The assay procedure has been updated from that of Morrison to an ABTS/H2O2 based method with increased sensitivity and reproducibility.
技術規格
Description |
Chromatographically purified. A lyophilized powder. |
Storage |
Store at -20℃ |
Activity |
≥35 units per mg dry weight ABTS |
Unit Definition |
One Unit reduces one micromole of hydrogen peroxide per minute at 25°C, pH 6.0. Note: This unit definition is based upon a new assay method. The previous method yielded approximately 2.8 times higher results. |