{"product_id":"galactosidase-enzyme-activity-tbp0018","title":"ß-Galactosidase, Enzyme Activity","description":"\u003cp\u003e\u003cspan style=\"font-size: 18px\"\u003e\u003cstrong\u003e\u003cu\u003ePreparation and Specification\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eAppearance:\u003c\/u\u003e White amorphous powder, lyophilized.\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eActivity:\u003c\/u\u003e GradeⅡ 500U\/mg-solid or more\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eContaminants:\u003c\/u\u003e α-galactosidase \u0026lt;1×10⁻⁴%\u003c\/p\u003e\n\u003cp style=\"padding-left: 80px\"\u003eα-glucosidase \u0026lt;1×10⁻⁴%\u003c\/p\u003e\n\u003cp style=\"padding-left: 80px\"\u003eß-glucosidase \u0026lt;2×10⁻³%\u003c\/p\u003e\n\u003cp style=\"padding-left: 80px\"\u003eα-mannosidase \u0026lt;1×10⁻⁴%\u003c\/p\u003e\n\u003cp style=\"padding-left: 80px\"\u003eß-mannosidase \u0026lt;1×10⁻⁴%\u003c\/p\u003e\n\u003cp style=\"padding-left: 80px\"\u003eproteinase \u0026lt;10mAbs\/mg-P\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eStabilizer:\u003c\/u\u003e Mg⁺⁺\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px\"\u003e\u003cstrong\u003e\u003cu\u003eProperties\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eStability:\u003c\/u\u003e Stable at -20°C for at least One year\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eMolecular weight:\u003c\/u\u003e 540,000\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eIsoelectric point:\u003c\/u\u003e 4.6\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eMichaelis constants:\u003c\/u\u003e 3.0×10⁻⁴M (o-Nitrophenyl-ß-D-galactoside), 6.7×10⁻⁵M (p-Nitrophenyl-ß-D-galactoside), 2.3×10⁻⁴M\u003c\/p\u003e\n\u003cp\u003e(Phenyl-ß-D-galactoside), 2.5×10⁻³M (Lactose)\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eStructure:\u003c\/u\u003e The enzyme is composed of four identical subunits having a molecular weight of ca.135,000. The amino acid analysis indicates approximately 1,170 residues per subunit. \u003cimg class=\"alignnone size-full wp-image-25301\" src=\"https:\/\/tribioscience.com\/wp-content\/uploads\/2024\/02\/TBP0018-image.png\" alt=\"\" width=\"129\" height=\"24\"\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eInhibitors:\u003c\/u\u003e p-Chloromercuribenzoate, lodoacetamide, heavy metal ions (Zn⁺⁺, Fe⁺⁺⁺, Cd⁺⁺, Cu⁺⁺, Pb⁺⁺, Ag⁺, Hg⁺⁺), lonic detergents (SDS, DAC, etc.)\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eOptimum pH:\u003c\/u\u003e 7.0-7.5\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eOptimum temperature:\u003c\/u\u003e 50-55℃\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003epH Stability:\u003c\/u\u003e pH 6.5-8.5 (25℃, 20hr)\u003c\/p\u003e\n\u003cp\u003e\u003cu\u003eThermal stability:\u003c\/u\u003e below 50℃ (pH 7.3, 15min)\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 18px\"\u003e\u003cstrong\u003e\u003cu\u003eApplications\u003c\/u\u003e\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003cp\u003eThis enzyme is useful for structural investigation of carbohydrates, the determination of lactose (foodstuff analysis) and as an enzyme label for enzyme immunoassay.\u003c\/p\u003e\n\u003cp\u003e\u003c!--TBP0018-1KU TBP0018-5KU--\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cspan style=\"font-size: 13px; font-weight: 700; text-transform: uppercase;\"\u003e\u003cstrong\u003eResearch use only.\u003c\/strong\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003eDocuments\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/tribioscience.com\/wp-content\/uploads\/2024\/02\/TBP0018-s-Galactosidase.pdf\"\u003eDatasheet (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"https:\/\/tribioscience.com\/wp-content\/uploads\/2024\/02\/TBP0018_s-Galactosidase-Safety-Data-Sheet.pdf\"\u003eMSDS (PDF)\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"TriBioScience","offers":[{"title":"1000U","offer_id":45986493759567,"sku":"TBP0018-1000U","price":0.0,"currency_code":"ILS","in_stock":true},{"title":"5000U","offer_id":45986493792335,"sku":"TBP0018-5000U","price":0.0,"currency_code":"ILS","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0712\/0748\/5519\/files\/TBP0018.png?v=1782812544","url":"https:\/\/www.danyel.co.il\/products\/galactosidase-enzyme-activity-tbp0018","provider":"danyel biotech","version":"1.0","type":"link"}