A search of the website does not show a density for product G4155. For products supplied in small quantities, it is not common for the density to be measured. However, for solutions available in larger quantities, density information is often provided. Although the density for G4155 is not stated, there is some useful information available from the website. The physical form of the product is a suspension in 50% glycerol, 5 mM Tris buffer salts, 5 mM magnesium chloride, 0.5 mM DTT, and 0.5 mM mercaptoethanol at pH 7.4.
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G4155
ββ-Galactosidase aus E. coli
aqueous glycerol suspension, ≥500 units/mg protein (biuret)
Synonym(e):
β-D-Galactosid-Galactohydrolase, Lactase
Anmeldenzur Ansicht organisationsspezifischer und vertraglich vereinbarter Preise
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1000 UNITS
108,00 €
3000 UNITS
278,00 €
5000 UNITS
397,00 €
108,00 €
Versandbereit am10. April 2025Details
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1000 UNITS
108,00 €
3000 UNITS
278,00 €
5000 UNITS
397,00 €
About This Item
CAS-Nummer:
MDL-Nummer:
UNSPSC-Code:
12352204
NACRES:
NA.54
108,00 €
Versandbereit am10. April 2025Details
Empfohlene Produkte
Form
aqueous glycerol suspension
Qualitätsniveau
Spezifische Aktivität
≥500 units/mg protein (biuret)
Mol-Gew.
465 kDa
Lagertemp.
−20°C
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Anwendung
β-Galactosidase is used in the enzymatic assays in the synthesis of imidazolo-pyrrolidinoses.
Biochem./physiol. Wirkung
β-Galactosidase spaltet Lactose in ihre Monosaccharid-Komponenten Glucose und Galactose. Außerdem katalysiert sie die Transglycosylierung von Glucose zu Allolactose, dem Induktor von β-Galactosidase, in einem Rückführungsmechanismus.
Physikalische Eigenschaften
Molekulargewicht des Tetramers: 465 kDa (Subunits je 116,3 kDa)
Einheitendefinition
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.
Physikalische 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
Sonstige Hinweise
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).
Inhibitor
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Substrat
Produkt-Nr.
Beschreibung
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Lagerklassenschlüssel
10 - Combustible liquids
WGK
WGK 2
Flammpunkt (°F)
Not applicable
Flammpunkt (°C)
Not applicable
Hier finden Sie alle aktuellen Versionen:
Analysenzertifikate (COA)
Lot/Batch Number
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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
Christophe Laumonnerie et al.
Development (Cambridge, England), 141(3), 594-603 (2014-01-23)
The establishment of anatomically stereotyped axonal projections is fundamental to neuronal function. While most neurons project their axons within the central nervous system (CNS), only axons of centrally born motoneurons and peripherally born sensory neurons link the CNS and peripheral
E Paschke et al.
Human genetics, 109(2), 159-166 (2001-08-21)
An inherited deficiency in beta-galactosidase can result in GM1 gangliosidosis, with several phenotypes of generalized or chronic psychomotor deterioration, as well as in Morquio disease type B, a characteristic mucopolysaccharidosis free of neurological symptoms. We performed mutation analyses in 17
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
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Could you please advise if the density of the aqueous suspension of beta galactosidase from Escherichia coli (G4155) can be assumed as 1 uL of solution is equal to 1 mg, given that the SDS and provided enzyme assay do not contain this information?
1 Antwort-
Hilfreich?
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We recently purchased this enzyme. Information given regarding enzyme volume is only 1000 units. I want to know what would be units per uL. How much is the liquid volume in the given product to calculate the enzyme concentration? Provide proper informatio
1 Antwort-
Units/ml can be calculated using the numbers reported in batch specific CofA. Below is an example.
CofA of G4155, lot 0000303635
https://www.sigmaaldrich.com/certificates/sapfs/PROD/sap/certificate_pdfs/COFA/Q14/G4155-3KU0000303635.pdf
1.5 mgP/ml X 766 units/mg Protein = 1149 units/mlHilfreich?
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