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Method for controlling the expression of a foreign gene in Escherichia coli and methods for producing a foreign gene product

机译:控制大肠杆菌中外源基因表达的方法和生产外源基因产物的方法

摘要

Escherichia coli carrying a hybrid plasmid having been constructed by inserting a desired foreign gene into an expression vector so as to permitting expression of said desired foreign gene therein was cultured at a temperature 40 DEG C or over so that the expression of said desired foreign gene was suppressed. This E. coli (i.e., transformant) was cultured at 40 DEG C or over in a first process to suppress the expression of the foreign gene and to support sufficient cell growth and thereafter below 40 DEG C in a second process to release the suppression of the expression so as to permit effective production of the foreign gene product, which resulted in high concentration of the foreign gene product in the final culture.
机译:通过将所需的外源基因插入表达载体中以允许所述所需的外源基因在其中表达而构建的携带杂种质粒的大肠杆菌在40℃或更高的温度下培养,从而使所需的外源基因的表达为40℃。压抑。在第一步骤中将该大肠杆菌(即转化体)培养在40℃或更高温度下以抑制外源基因的表达并支持足够的细胞生长,然后在第二步骤中在40℃以下培养以释放对大肠杆菌的抑制。该表达可以有效产生外源基因产物,从而导致最终培养物中高浓度的外源基因产物。

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