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Isopropyl b-D-thiogalactopyranoside
异丙基-β-D-硫代吡喃半乳糖苷(IPTG)
Product Code: EI05931
CAS No: 367-93-1
Molecular Formula: C9H18O5S
Molecular Weight: 238.30
Details:
IPTG是β–半乳糖苷酶的活性诱导物质。基于这个特性,当pUC系列的载体DNA(或其他带有lacZ 基因载体DNA)以lacZ 缺失细胞为宿主进行转化时、或用M13噬菌体的载体DNA进行转染时,如果在平板培养基中加入X–gal和IPTG,由于β–半乳糖苷酶的α–互补性,可以根据是否呈现白色菌落(或噬菌斑)而方便地挑选出基因重组体。此外,它还可以作为具有lac或tac等启动子表达载体的表达诱导物使用。

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