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21food.cn
1 个月
异丙基-β-D-硫代半乳糖苷(IPTG)
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。 AND水份仪 ...
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