G6920
Endo-β-galactosidase from Bacteroides fragilis
recombinant, expressed in E. coli, ≥140 units/mg protein, buffered aqueous solution
Synonyme(s) :
β-Galactosidase bacterial, Keratanase
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About This Item
Numéro MDL:
Code UNSPSC :
12352204
Nomenclature NACRES :
NA.54
Produits recommandés
Produit recombinant
expressed in E. coli
Niveau de qualité
Conjugué
(Glucosaminoglycan)
Stérilité
aseptically filled
Forme
buffered aqueous solution
Activité spécifique
≥140 units/mg protein
Poids mol.
32 kDa
Température de stockage
2-8°C
Catégories apparentées
Application
Endo-β-galactosidase was used in fractional protein isolation. It was used for deglycosylation in glycoproteomics of the endothelial secretome of human endothelial cells.
Actions biochimiques/physiologiques
Internal β(1-4) galactose linkages in unbranched, repeating poly-Nacetyllactosamine [GlcNAc β(1-3)Gal β (1-4)] structures are the preferred substrate.
Sulfated structures such as keratan sulfate are also cleaved. Branching and/or fucosylation of the substrate may reduce or completely inhibit cleavage. Sulfation of C-6 on galactose will block cleavage. Oligosaccharides of the neolacto-group are cleaved at greatly reduced rates depending on the deviation from the preferred substrate. For example, Gal β(1-3)GlcNAc β(1-3) Gal β(1-4)Glc is cleaved at 5X10-5 the rate of keratan sulfate
β-galactosidase cleaves lactose into its monosaccharide components, glucose and galactose. It also catalyses the transglycosylation of glucose into allolactose, the inducer of β-galactosidase, in a feedback loop.
Sulfated structures such as keratan sulfate are also cleaved. Branching and/or fucosylation of the substrate may reduce or completely inhibit cleavage. Sulfation of C-6 on galactose will block cleavage. Oligosaccharides of the neolacto-group are cleaved at greatly reduced rates depending on the deviation from the preferred substrate. For example, Gal β(1-3)GlcNAc β(1-3) Gal β(1-4)Glc is cleaved at 5X10-5 the rate of keratan sulfate
β-galactosidase cleaves lactose into its monosaccharide components, glucose and galactose. It also catalyses the transglycosylation of glucose into allolactose, the inducer of β-galactosidase, in a feedback loop.
Définition de l'unité
One unit will release 1.0 μmole of reducing sugar from bovine corneal keratan sulfate per minute at 37 °C, pH 5.8.
Forme physique
Aseptically filled solution in 20 mM Tris-HCl, pH 7.5
Code de la classe de stockage
10 - Combustible liquids
Classe de danger pour l'eau (WGK)
WGK 1
Point d'éclair (°F)
Not applicable
Point d'éclair (°C)
Not applicable
Équipement de protection individuelle
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
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