| 1. | Pks expression plasmids containing strong , temperature - inducible , bacteriophage lambda promoters with or without the escherichia coli phage t7 promoter were constructed and some of them lead to high expression of the expected c 为在大肠杆菌超量表达该2 . 7kbpks基因所编码的两个功能结构域,构建了具有不同启动子组合的pks表达质粒。 |