科学家将β﹣干扰素基因进行定点突变导入大肠杆菌表达,使干扰素

科学家将β﹣干扰素基因进行定点突变导入大肠杆菌表达,使干扰素第十七位的半胱氨酸,改变成丝氨酸,结果大大提高了β﹣干扰素的抗病活性,并且提高了储存稳定性.该生物技术为(  )

 

A

基因工程

B

蛋白质工程

C

基因突变

D

细胞工程

答案

B

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