中文名:异丙基-β-D-硫代半乳糖苷(IPTG)
英文名:Isopropyl beta-D-thiogalactoside
中文别名:异丙基1-硫代-β-D-半乳糖吡喃糖苷
英文别名:Isopropyl 1-Thio-β-D-galactopyranoside
纯度:>98.0%
货号:I104812
包装:100g、25g、5g
Cas号:367-93-1
存储温度:2-8°C储存,充氩
产品介绍:
IPTG, Dioxane-Free (isopropyl-β-thiogalactoside) is an analogue of allolactose that binds specifically to the repressor protein of the lac operon and induces expression of β-galactosidase in Escherichia coli. The compound is widely used with X-Gal plates to screen for blue and white colonies. The lac operon system and IPTG have been used in multiple cloning experiments and cellular systems to study gene activity.IPTG 常用于需要诱导 β-半乳糖苷酶活性的克隆实验。它常与 X-Gal 或 Bluo-Gal 结合使用,用于重组细菌菌落的蓝白筛选,这些菌落可以诱导 lac 操纵子在大肠杆菌中的表达。IPTG 与 lacI 阻遏蛋白结合并改变其构象而发挥作用,防止 β-半乳糖苷酶编码基因 lacZ 的抑制。
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