β 半乳糖苷酶 来源于大肠杆菌

G755154-5KU

5KU

Grade VI, lyophilized powder,≥250 units/mg protein

β-半乳糖苷酶与特异性识别目标分子的抗体偶联（酶联免疫检测或 EIA）。 β-半乳糖苷酶还被用作监测启动子基因表达水平的报告酶。应用： β-半乳糖苷酶是由四个相同亚基组成的四聚体，每个亚基为135,000 Da。它是一种含巯基的酶，每个亚基含有19个半胱氨酸残基。 β-Galactosidase is a tetramer consisting of four equal subunits of 135,000 Da each. It is a sulfhydryl containing enzyme, with 19 cysteine residues per subunit. Application: β-Galactosidase is conjugated to an antibody that specifically recognizes a target molecule (enzyme immunoassay or EIA). β-Galactosidase is also used as a reporter enzyme to monitor the level of gene expression of a promoter.

β-半乳糖苷酶可将乳糖切割成单糖成分（葡萄糖和半乳糖）。它还在反馈环中催化葡萄糖转糖基化为β-半乳糖苷酶的诱导物 - 异乳糖。β-半乳糖苷酶将乳糖切割成单糖成分，即葡萄糖和半乳糖。它还在反馈环中催化葡萄糖的转糖基化，生成β-半乳糖苷酶的诱导物——异乳糖 。

NA.54