Methods:The influence of ammonium sulfate and glucose on plasmid stability and penicillin G acylase activity were conducted in flask shakes and a 5L fermentor.
发酵过程中维持低葡萄糖水平可以限制细胞的生长速率，提高质粒稳定性和促进青霉素G酰化酶的合成。
The plasmid stability studies showed that recombinant plasmid has excellent segregational stability but the structural stability was not good in the host cell.
对重组菌中重组质粒的稳定性进行研究，结果表明该质粒在宿主菌中具有良好的分离稳定性，而结构稳定性较差。
The plasmid stability studies showed that recombinant plasmid has excellent segregational stability but the structural stability was not good in the host cell.
对重组菌中重组质粒的稳定性进行研究，结果表明该质粒在宿主菌中具有良好的分离稳定性，而结构稳定性较差。
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