Catalase from bovine liver
lyophilized powder, 2,000-5,000 units/mg protein
Frequently Asked Questions
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Catalase from bovine liver is a tetramer consisting of 4 equal subunits each with a 60 kDa molecular weight. Each of these subunits contains iron bound to a protoheme IX group. The enzyme will also strongly bind to NADP, where NADP and the heme group are within 13.7 angstroms.
Catalase acts as a natural antioxidant to study the roles of reactive oxygen species in gene expression and apoptosis. It has also been used to protect against oxidative damage to proteins, lipids, and nucleic acids. Industrially, catalses have been used to remove hydrogen peroxide added to milk and cheese, in textile bleaching, and to examine its positive effects on the viability of DNA-repair mutants of E. coli.
This product doesn′t need any activators, but it is inhibited by 3-amino-1-H-1,2,4 triazole, cyanide, azide, hydroxylamine, cyanogens bromide, 2-mercaptoethanol, dithiothreitol, dianisidnie and nitrate.
在 pH 7.0 和 25°C 下，一单位本品每分钟可以分解 1.0μmol H2O2，同时 H2O2 浓度从 10.3mM 降至 9.2mM，这是通过 A240 的降低速率来测量的。
Related Categories 188.8.131.52 Catalase, 1.x.x.x Oxidoreductases, Application Index, Diagnostic and Analytical Enzymes, Enzyme Class Index,
General Metabolic Enzymes, General Metabolic Enzymes A-H, 代谢组学, 生化试剂, 细胞生物学, 酶、抑制剂和底物
Quality Level ELITE
form lyophilized powder
mol wt tetramer mol wt ~250 kDa
isoelectric point 5.4
storage temp. −20°C
Gene Information cow ... CAT(280743)