Construction of the prokaryotic expression system of yfiF gene in E. coli,optimization of its induced expression condition and purification of the protein
[Objective]To construct the prokaryotic expression system of yfi F gene,which is a function unknown gene of E. coli,to optimize its induced expression condition,and to purify the soluble Yfi F fusion protein. [Methods]Using p ET16 b expression plasmid to construct p ET16b- yfi F prokaryotic expression vector,then transformed it into E. coli BL21,and was induced by IPTG to express fusion protein Yfi F. The adding time,final concentration and induction time of IPTG was optimized. The soluble Yfi F fusion prot...