Synonym: SOD, Superoxide: superoxide oxidoreductase
|Related Categories||1.15.x.x Acting on superoxide radicals, 1.x.x.x Oxidoreductases, Application Index, Biochemicals and Reagents, Cell Biology,|
|composition||Protein, ≥95% biuret|
|Gene Information||cow ... SOD1(281495), SOD2(281496)|
Catalyzes the dismutation of superoxide radicals to hydrogen peroxide and molecular oxygen. Plays a critical role in the defense of cells against the toxic effects of oxygen radicals. Competes with nitric oxide (NO) for superoxide anion (which reacts with NO to form peroxynitrite), thereby SOD promotes the activity of NO.3 SOD has also been shown to suppress apoptosis in cultured rat ovarian follicles, neural cell lines, and transgenic mice.4,5
Superoxide dismutases are a group of low molecular weight metalloproteins present in all aerobic cells of plants, animals and micro-organisms. They provide protection against damaging reactions with the superoxide radical anion (O2-) by catalyzing its disproportionation into oxygen and hydrogen peroxide.
One unit will inhibit reduction of cytochrome c by 50% in a coupled system with xanthine oxidase at pH 7.8 at 25 °C in a 3.0 ml reaction volume. Xanthine oxidase concentration should produce an initial ΔA550 of 0.025 ± 0.005 per min.
Lyophilized powder containing potassium phosphate buffer salts
Superoxide dismutase from bovine erythrocytes has been used in a study to assess a kinetic model of radiation-induced inactivation of superoxide dismutase in nitrous oxide-saturated solutions. 1 Superoxide dismutase from bovine erythrocytes has also been used in a study to investigate the possible participation of superoxide anion in the intestinal tryptophan 2,3-dioxygenase reaction. 2
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sufficient for 500 tests
recombinant, expressed in E. coli, lyophilized powder, ≥2500 units/mg protein, ≥90% (SDS-PAGE)
lyophilized powder, 2,500-7,000 units/mg protein
BioReagent, ≥3,000 units/mg protein, suitable for cell culture, lyophilized powder
BioUltra, lyophilized powder, ≥4,500 units/mg protein, ≥97% (SDS-PAGE)
Oxidative stress is implicated in the pathogenesis of lipotoxicity in both animal and human studies. Chronic oxidative stress is linked to insulin resistance in multiple tissues. Oxidative stress is ...
BioFiles 2011, 6.4, 22.
Keywords: Anti-inflammatory agents, Apoptosis, Cancer, Cell signaling, Cellular processes, Gene expression, Indicators, Metabolism, Oxidations, Respiratory
1. OBJECTIVE To standardize a procedure for the enzymatic determination of superoxide dismutase.
Keywords: Catalysis, Reductions
From our library of Related Content, Sigma-Aldrich presents Enzyme Explorer: the most comprehensive source of enzymes, substrates, activators, & inhibitors.
Keywords: Cell culture, Cell disruption, Cell signaling, Diagnostic, Digestions, Drug discovery, Functional genomics, Gene expression, Genomics, Metabolic Pathways, Molecular biology, Neuroscience, Proteomics
3. Apparent hydroxyl radical production by peroxynitrite: implications for endothelial injury from nitric oxide and superoxide. Beckman, J.S., et al. Proc. Natl. Acad. Sci. U. S. A. 87, 1620-1624, (1990)
4. Inhibitors of oxidative stress mimic the ability of follicle-stimulating hormone to suppress apoptosis in cultured rat ovarian follicles. Tilly, J.L., and Tilly, K.I. Endocrinology 136, 242-252, (1995)
Salvage of nonischemic control lung from injury by unilateral ischemic lung with apocynin, a nicotinamide adenine dinucleotide phosphate (NADPH) oxidase inhibitor, in isolated perfused rat lung. Zhu, C., et al. Transl. Res. 152, 273-82, (2008)
Therapeutic effect of magnesium sulphate on carbon monoxide toxicity-mediated brain lipid peroxidation. Yavuz Y, Mollaoglu H, Yürümez Y, et al. Eur. Rev. Med. Pharmacol. Sci. 17 Suppl 1, 28-33, (2013)
eGFP expression under UCHL1 promoter genetically labels corticospinal motor neurons and a subpopulation of degeneration-resistant spinal motor neurons in an ALS mouse model. Yasvoina MV, Genç B, Jara JH, et al. J. Neurosci. 33(18), 7890-904, (2013)
Effects of manganese superoxide dismutase (MnSOD) expression on regulation of esophageal cancer cell growth and apoptosis in vitro and in nude mice. Sun G, Wang Y, Hu W, et al. Tumour Biol. 34(3), 1409-19, (2013)
[Development of Scotch pine seedlings and functioning of antioxidant systems under the chronic action of lead ions]. Ivanov IuV, Savochkin IuV, and Kunetsov VV Izv. Akad. Nauk Ser. Biol. (1), 32-42, (2013)
[Protective effect of medicated serum prepared with taohong siwu tang on hydrogen peroxide-induced human umbilical vein endothelial cells]. Liu ZQ, Yin DK, Han L, et al. Zhongguo Zhong Yao Za Zhi 38(3), 402-6, (2013)
Characterization of differentially expressed stress-associated proteins in starch granule development under heat stress in wheat (Triticum aestivum L.). Kumar RR, Sharma SK, Goswami S, et al. Indian J. Biochem. Biophys. 50(2), 126-38, (2013)
[Antioxidant properties of remaxol, reamberin, and ademetionine in patients with drug-induced liver injury on the background of antituberculous therapy]. Sukhanov DS Eksp. Klin. Farmakol. 76(4), 45-8, (2013)
[The antioxidant enzyme activity in mouse liver mitochondria after nanosecond pulsed periodic X-ray exposure]. Kniazeva IR, Ivanov VV, Bol'shakov MA, et al. Radiats. Biol. Radioecol. 53(2), 183-90, (2013)
The free radical scavenger, edaravone, ameliorates delayed neuropsychological sequelae after acute carbon monoxide poisoning in rabbits. Qingsong W, Yeming G, Xuechun L, et al. Undersea Hyperb. Med. 40(3), 223-9, (2013)
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