C4519

Ceruloplasmin human

lyophilized powder, oxidase 20-75 units/mg protein

• Numéro CAS: 9031-37-2
• Numéro MDL: MFCD00130766
• Code UNSPSC : 12352202
• Nomenclature NACRES : NA.77

Propriétés

• Forme: lyophilized powder
• Niveau de qualité: 200
• oxidase activity: 20-75 units/mg protein
• Poids mol.: ~135 kDa
• Composition: Protein, ~30%
• Teneur en cuivre: 1.0-2.5 μg/mg protein
• Numéro d'accès UniProt: P00450
• Température de stockage: −20°C
• Informations sur le gène: human ... CP(1356)

Description

Actions biochimiques/physiologiques

Ceruloplasmin (Cp), the principal carrier of copper in plasma, is thought to be involved in oxidative modification of lipoproteins and participate in the acute phase reaction to stress. Cp is an effective antioxidant for a variety of radicals and has a potent peroxidase activity to decompose hydrogen peroxide in the presence of reduced glutathione. It inhibits the peroxidase activity of myeloperoxidase in a concentration-dependent manner and shows selective binding to myeloperoxidase in vitro. This suggests that ceruloplasmin may participate in the clearance and inactivation of myeloperoxidase in vivo. At physiological (micromolar) concentrations it was found to inhibit relaxation of rabbit aorta induced by endothelium-dependent agonists like acetylcholine or ADP. However, it was found ineffective toward vasodilation due to direct stimulation of smooth muscle cells by nitroglycerin.

Ceruloplasmin (Cp), the principal carrier of copper in plasma, is thought to be involved in oxidative modification of lipoproteins and participate in the acute phase reaction to stress. Cp is an effective antioxidant for a variety of radicals and has a potent peroxidase activity to decompose hydrogen peroxide in the presence of reduced glutathione. It inhibits the peroxidase activity of myeloperoxidase in a concentration-dependent manner and shows selective binding to myeloperoxidase in vitro. This suggests that ceruloplasmin may participate in the clearance and inactivation of myeloperoxidase in vivo. At physiological (micromolar) concentrations it was found to inhibit relaxation of rabbit aorta induced by endothelium-dependent agonists like acetylcholine or ADP. However, it was found ineffective toward vasodilation due to direct stimulation of smooth muscle cells by nitroglycerin. Cp plays an essential role in iron homeostasis, regulating the efflux of iron from macrophages and the oxidation of Fe²⁺ to Fe³⁺. Cp deficiency leads to neurodegenerative disorders, possibly by starving neurons of iron.

Définition de l'unité

One unit will cause a ΔA₅₅₀ of 0.01 per min using N,N-dimethyl-p-phenylenediamine as substrate at pH 5.5 and 37 °C, in a 7 mL reaction volume.

Forme physique

Pale blue powder containing sodium chloride and sodium acetate

Remarque sur l'analyse

Protein determined by biuret

Clause de non-responsabilité

Ce produit, destiné à la recherche scientifique, est soumis à une réglementation spécifique en France, y compris pour les activités d′importation et d′exportation (Article L 1211-1 alinéa 2 du Code de la Santé Publique). L′acheteur (c′est-à-dire l′utilisateur FINAL) est tenu d′obtenir une autorisation d′importation auprès du ministère français de la recherche, mentionné à l′article L1245-5-1 II du Code de la Santé Publique. En commandant ce produit, vous confirmez détenir l′autorisation d′importation requise.

Informations sur la sécurité

• Code de la classe de stockage: 13 - Non Combustible Solids
• Classe de danger pour l'eau (WGK): WGK 3
• Point d'éclair (°F): Not applicable
• Point d'éclair (°C): Not applicable