English name: SOD; Superoxide Dismutase
Other names: superoxide dismutase
CAS number: 9054-89-1
Source: cow's blood
Energy: 2500~7000 units/mg protein
Activity definition: One unit will inhibit reduction of cytochrome c by 50% in a coupled system with Xanthine oxidase at pH 7.8 3.0 mL at 25 ° c in a reaction volume. Xanthine oxidase concentration should produce an initial ΔA550 of 0.025 ± 0.005 per min
Properties: light blue powder, red blood cell, liver and other mammalian enzymes from isolated proteins. Catalytic O2-+O2-+2H+=H2O2+O2 reaction of two identical subunits. According to their metal-assisted ion can be divided into three types: Cu-Zn-SOD, each subunit contains copper and zinc ions by a molecular weight: 34000 ± (4%); Mn-SOD, molecular weight: 400000; Fe-SOD, molecular weight approximately 40000
Use: biochemical studies. Is O2-+O2-+2H+H2O2+O2 reaction catalyzed by enzymes, which widely exist in the desired oxide, protects the body against the effects of oxygen free radicals, are an important source of oxygen-derived free radical scavenger.