β 半乳糖苷酶 来源于米曲霉

β-D-半乳糖苷半乳糖水解酶 | 乳糖酶 | β-半乳糖苷酶

β-D-Galactoside galactohydrolase | Lactase | exo-(1->4)-beta-D-galactanase | lacA | lacB | lacC

G493781-100g

100g

EnzymoPure™

150000u/g

生化/生理作用： β-半乳糖苷酶作用于二糖、糖缀合物和多糖末端的β-D-半乳糖基。它可用于介导转糖基反应，比如低聚半乳糖(GOS)合成。ββ-半乳糖苷酶可用于糖生物学和生物技术应用。 β-半乳糖苷酶切割乳糖成单糖成分，葡萄糖和半乳糖。它还能催化葡萄糖转糖基化形成异乳糖，在反馈回路中作为β-半乳糖苷酶的诱导剂。 产品应用： β-半乳糖苷酶（来源于米曲霉Aspergillus oryzae）已用于：①体外核磁共振(NMR)；②作为β-半乳糖苷酶分析标准品，测定细胞相关的β-半乳糖苷酶浓度； ③修饰突变滑液细胞(slime cell)表面的糖残基以研究粘附性；④乳糖酶促水解实验；⑤反相(RP)吸附实验；⑥乳清乳糖水解 产品特性： 1、温度范围：有效温度范围：20℃-70℃ 最适宜温度：40-60℃ 2、PH范围：有效PH范围：2.0-7.5 最适宜PH范围：4.0-5.5 酶学委员会编号：3.2.1.23 原理：乳糖酶能分解乳糖分子中的β-半乳糖苷键，生成葡萄糖和半乳糖。 酶活力定义：1g乳糖酶再PH4.5、37℃下，每分钟下分解ONPG(邻硝基苯β-D-半乳吡喃糖苷)产生1umol ONP(邻硝基酚)所需要的酶量，即1个酶活力单位以u/g表示。 Biochemical/physiological effects: β- Galactosidase acts on the ends of disaccharides, glycoconjugates and polysaccharides β- D-galactosyl. It can be used to mediate sugar transfer reactions, such as galactooligosaccharide (GOS) synthesis. ββ- Galactosidase can be used in glycobiology and biotechnology. β- Galactosidase cleaves lactose into monosaccharide components, glucose and galactose. It can also catalyze the transglycosylation of glucose to form isolactose, which acts as β- The inducer of galactosidase. Product application: β- Galactosidase (from Aspergillus oryzae) has been used for: ① in vitro nuclear magnetic resonance (NMR); ② As β- Galactosidase analysis standard, determination of cell related β- Galactosidase concentration; ③ To modify the sugar residues on the surface of the mutant synovial cells to study the adhesion; ④ Lactase hydrolysis experiment; ⑤ Reverse phase (RP) adsorption experiment; ⑥ Whey lactose hydrolysis Product characteristics: 1. Temperature range: effective temperature range: 20 ℃ - 70 ℃ Optimum temperature: 40-60 ℃ 2. PH range: effective PH range: 2.0-7.5 Optimum PH range: 4.0-5.5 Enzymology Committee No.: 3.2.1.23 Principle: lactase can decompose β- A galactoside bond that produces glucose and galactose. Definition of enzyme activity: 1g lactase decomposes ONPG (o-nitrobenzene) every minute at PH 4.5 and 37 ℃ β- D-galactopyranoside) to produce 1umol ONP (o-nitrophenol), that is, one enzyme activity unit is expressed in u/g.

≥150000 U/g

天然

米曲霉(Aspergillus oryzae)

NA.54