In this study, three strains overexpressing transaminase were constructed by gene engineering, and the expression of the aspartate aminotransferase (encoding by aspC gene) in E.

• 本研究利用基因工程的方法构建高效表达苯丙氨酸转氨酶的生物工程菌并对外源基因表达的调控进行研究。