Figure 3From: One-step of tryptophan attenuator inactivation and promoter swapping to improve the production of L-tryptophan in Escherichia coliRT-PCR analysis of constructed E. coli. (A) Relative gene expression of E. coli GPT1002 to the control GPT1001. (B) Relative gene expression of E. coli GPT101 to the control GPT100. gapA transcripts was selected as standard and each measurements were repeated three times. The error bars indicate standard deviations.Back to article page