plasmid of protokaryon and enkaryon原核
Although protokaryon and eukaryon expression systems had been constructed successfully, there still exist several shortcomings such as low yield or low enzyme activity, which limited them industrialization.
尽管已有实验室报道成功构建了人组织激肽释放酶的真核表达系统和原核表达系统，但由于存在着表达量低、产物活性低等缺点，自今尚未见用作工业生产的报道。
参考来源 - 激肽释放酶的仿生亲和纯化研究