C4963
Catalase−polyethylene glycol
lyophilized powder, ~40,000 units/mg protein
Synonyme(s) :
PEG-Catalase
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About This Item
Produits recommandés
Forme
lyophilized powder
Niveau de qualité
Activité spécifique
~40,000 units/mg protein
Poids mol.
PEG 5,000
Composition
Protein, ~50% E405
Ampleur du marquage
~40 mol PEG per mol protein
Fixation de matrice
secondary amine linkage.
Température de stockage
−20°C
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Application
Pulmonary artery endothelial cells treated with PEG-catalase showed effective inhibition of 20- HETE (hydroxyeicosatetraenoic acid)-induced increase in fluorescence. However, the experiment excludes potential nonspecific fluorescence of DCF (dichlorofluorescein). This experiment studied the effect of 20-HETE on superoxide production and NADPH oxidase activation.
Actions biochimiques/physiologiques
Catalase from bovine liver catalyzes the decomposition of H2O2 into water and oxygen. It is a tetramer consisting of four equal subunits with a molecular weight of 60 kDa each. Each subunit contains iron bound to a protoheme IX group. The enzyme also strongly binds NADP, which is in close proximity to the heme group. Catalase activity is constant over the pH range of 4.0-8.5. The pI is found to be 5.4. The enzyme activity is inhibited by 3-amino-1-H-1,2,4 triazole, cyanide, azide, hydroxylamine, cyanogen bromide, 2-mercaptoethanol, dithiothreitol, dianisidine, and nitrate. Incubation of catalase with ascorbate or ascorbate/Cu2+ results in degradation of the catalase molecule. It does not require any activators.
Conditionnement
Package size based on protein content
Autres remarques
Catalase from bovine liver coupled to methoxy-polyethylene glycol.
Forme physique
Contains PEG plus 5% citrate buffer salts
Code de la classe de stockage
11 - Combustible Solids
Classe de danger pour l'eau (WGK)
WGK 3
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
Équipement de protection individuelle
Eyeshields, Gloves, type N95 (US)
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