G4155
β-Galactosidase from Escherichia coli
aqueous glycerol suspension, ≥500 units/mg protein (biuret)
Synonyme(s) :
β-D-Galactoside galactohydrolase, Lactase
Se connecter pour consulter les tarifs organisationnels et contractuels.
Sélectionner une taille de conditionnement
A propos de cet article
Numéro CAS:
UNSPSC Code:
12352204
NACRES:
NA.54
MDL number:
Specific activity:
≥500 units/mg protein (biuret)
Service technique
Besoin d'aide ? Notre équipe de scientifiques expérimentés est là pour vous.
Laissez-nous vous aiderService technique
Besoin d'aide ? Notre équipe de scientifiques expérimentés est là pour vous.
Laissez-nous vous aiderform
aqueous glycerol suspension
specific activity
≥500 units/mg protein (biuret)
mol wt
465 kDa
storage temp.
−20°C
Quality Level
Vous recherchez des produits similaires ? Visite Guide de comparaison des produits
Catégories apparentées
General description
Poids moléculaire du tétramère : 465 kDa (chaque sous-unité ayant 116,3 kDa)
Application
β-Galactosidase is used in the enzymatic assays in the synthesis of imidazolo-pyrrolidinoses.
Biochem/physiol Actions
βLa β-galactosidase clive le lactose en ses constituants monosaccharides, le glucose et le galactose. Elle catalyse également la transglycosylation du glucose en allolactose, inducteur de la β-galactosidase, dans une boucle de rétroaction.
Physical form
Suspension in 50% glycerol, 5 mM Tris buffer salts, 5 mM magnesium chloride, 0.5 mM DTT, 0.5 mM mercaptoethanol. pH 7.4
Other Notes
Loss of enzymatic activity can occur if this enzyme is frozen. This enzyme is provided in a 50% glycerol solution and will not freeze if stored at -20° Celsius. It is not recommended that this enzyme preparation be stored in an ultracold freezer (-60 to -100° Celsius).
One unit will hydrolyze 1.0 μmole of o-nitrophenyl β-D-galactoside to o-nitrophenol and D-galactose per min at pH 7.3 at 37 °C.
Classe de stockage
10 - Combustible liquids
flash_point_f
Not applicable
flash_point_c
Not applicable
signalword
Danger
hcodes
pcodes
Hazard Classifications
Resp. Sens. 1
Faites votre choix parmi les versions les plus récentes :
Déjà en possession de ce produit ?
Retrouvez la documentation relative aux produits que vous avez récemment achetés dans la Bibliothèque de documents.
Théophile Tschamber et al.
Bioorganic & medicinal chemistry, 11(17), 3559-3568 (2003-08-07)
The syntheses of four glyco-imidazoles, which are pentose-derivatives belonging to the D-series, as well as the syntheses of their L-enantiomers, are reported. Starting from the known linear xylo, lyxo, arabino, and ribo imidazolo-pentoses in both the L- and the D-series
Olga Ermakova et al.
Brain sciences, 11(6) (2021-07-03)
Acquisition of detailed anatomical and molecular knowledge from intact biological samples while preserving their native three-dimensional structure is still a challenging issue for imaging studies aiming to unravel a system's functions. Three-dimensional micro-CT X-ray imaging with a high spatial resolution
A Hinek et al.
The Journal of clinical investigation, 91(3), 1198-1205 (1993-03-01)
We and others have previously shown that a 67-kD cell surface elastin/laminin-binding protein (EBP) is responsible for cell adhesion to elastin and laminin and for mediating the process of elastin fiber assembly, but the nature of this protein was unknown.
S Privitera et al.
The Journal of biological chemistry, 273(11), 6319-6326 (1998-04-16)
Our previous studies showed immunological and functional similarities, as well as partial sequence homology, between the enzymatically inactive alternatively spliced variant of human beta-galactosidase (S-gal) and the 67-kDa elastin/laminin-binding protein (EBP) from sheep. To define the genetic origin of the
J W Callahan
Biochimica et biophysica acta, 1455(2-3), 85-103 (1999-11-26)
GM1 gangliosidosis and Morquio B disease are distinct disorders both clinically and biochemically yet they arise from the same beta-galactosidase enzyme deficiency. On the other hand, galactosialidosis and sialidosis share common clinical and biochemical features, yet they arise from two
Contenu apparenté
QC Methods
Notre équipe de scientifiques dispose d'une expérience dans tous les secteurs de la recherche, notamment en sciences de la vie, science des matériaux, synthèse chimique, chromatographie, analyse et dans de nombreux autres domaines..
Contacter notre Service technique