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β1,4-Galactosidase, Streptococcus pneumoniae, Recombinant, E. coli
Recombinant, Streptococcus pneumoniae β1,4-Galactosidase expressed in E. coli. Catalyzes the hydrolysis of non-reducing terminal β1,4-linked galactose. This enzyme is not known to cleave substituted or branched galactose. Inhibited by fucose attached to penultimate sugar. Note: 1 mU = 1 milliunit.
产品信息
Form Liquid
Formulation In 25 mM NaCl, 20 mM Tris-HCl, pH 7.5. Sterile solution.
Molar mass 350000
Do not freeze 是的
Specific activity ≥6 units/mg protein
Unit definition One unit is defined as the amount of enzyme that will catalyze the release of 1.0 µmol p-nitrophenol from p-nitrophenyl-β-D-galactopyranoside per min at 37°C, pH 5.0.
Activity ≥1.5 units/ml
Contaminants N-acetylglucosaminidase, α-galactosidase, α-mannosidase, neuraminidases, proteases: none detected. Recommended reaction buffer: 50 mM sodium phosphate buffer, pH 6.0
EC number 3.2.1.23
CAS number 9031-11-2
商店和运输信息
Storage +2°C to +8°C
Ship Blue Ice Only
Standard Handling |