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S8160

Sigma-Aldrich

Superoxid-Dismutase aus Rinderleber

lyophilized powder, ≥1500 units/mg protein

Synonym(e):

SOD, Superoxide: superoxide oxidoreductase

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About This Item

CAS-Nummer:
EC-Nummer:
EG-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352204
NACRES:
NA.54

Form

lyophilized powder

Qualitätsniveau

Spezifische Aktivität

≥1500 units/mg protein

Mol-Gew.

32.5 kDa

Zusammensetzung

Protein, ≥70% biuret

UniProt-Hinterlegungsnummer

Lagertemp.

−20°C

Angaben zum Gen

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Allgemeine Beschreibung

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.

Anwendung

Superoxide dismutase from bovine liver has been used in a study to determine that hypercholesterolemia increases endothelial superoxide anion production. Superoxide dismutase from bovine liver has also been used in a study to investigate diazo coupling, subunit interactions and electrophoretic variants of bovine erythrocyte superoxide dismutase.

Biochem./physiol. Wirkung

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. SOD has also been shown to suppress apoptosis in cultured rat ovarian follicles, neural cell lines, and transgenic mice.

Einheitendefinition

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.

Physikalische Form

Lyophilized powder containing potassium phosphate buffer salts

Hinweis zur Analyse

For assay method, see McCord, J.M. and Fridovich, I., J. Biol. Chem., 244, 6049 (1969).

Anwendung

Produkt-Nr.
Beschreibung
Preisangaben

Lagerklassenschlüssel

10 - Combustible liquids

WGK

WGK 3

Flammpunkt (°F)

Not applicable

Flammpunkt (°C)

Not applicable

Persönliche Schutzausrüstung

Eyeshields, Gloves, type N95 (US)


Analysenzertifikate (COA)

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S D Yan et al.
The Journal of biological chemistry, 269(13), 9889-9897 (1994-04-01)
Attack by reactive oxygen intermediates, common to many kinds of cell/tissue injury, has been implicated in the development of diabetic and other vascular diseases. Such oxygen-free radicals can be generated by advanced glycation end products (AGEs), which are nonenzymatically glycated
Bovine erythrocyte superoxide dismutase: diazo coupling, subunit interactions, and electrophoretic variants.
D P Malinowski et al.
Biochemistry, 18(1), 237-244 (1979-01-09)
Y Ohara et al.
The Journal of clinical investigation, 91(6), 2546-2551 (1993-06-01)
Indirect evidence suggests accelerated degradation of endothelium-derived nitric oxide (ENDO) by superoxide anion (O2-) in hypercholesterolemic vessels (HV). To directly measure O2- production by normal vessels (NV) and HV, we used an assay for O2- based on the chemiluminescence (CL)
Luciana Cacciottola et al.
Fertility and sterility, 110(3), 534-544 (2018-07-02)
To characterize oxidative stress and metabolic activity in xenografted human ovarian tissue using microdialysis. Prospective experimental study. Gynecology research unit at a university hospital. Cryopreserved ovarian cortex from five women 27-35 years of age. Frozen-thawed human ovarian tissue fragments were xenografted
Naoya Ichimaru et al.
Biochemistry, 47(40), 10816-10826 (2008-09-11)
The mode of action of Deltalac-acetogenins, strong inhibitors of bovine heart mitochondrial complex I, is different from that of traditional inhibitors such as rotenone and piericidin A [Murai, M., et al. (2007) Biochemistry 46 , 6409-6416]. As further exploration of

Protokolle

Enzymatic Assay of Superoxide Dismutase

Chromatograms

application for HPLC

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