Expression Vectors Expression vectors:allow experimenter to control the expression of cloned genes表达载体 Based on transcriptional control Allow for high levels of protein expression ·Strong promoters lac,trp,tac,trc,lambda P Effective transcription terminators are used to prevent expression of other genes on the plasmid Chen Feng,Lecture of MicrobiologyChen Feng, Lecture of Microbiology Expression Vectors Expression vectors: allow experimenter to control the expression of cloned genes 表达载体 • Based on transcriptional control • Allow for high levels of protein expression • Strong promoters • lac, trp, tac, trc, lambda PL • Effective transcription terminators are used to prevent expression of other genes on the plasmid