Fig. 2
From: Expression regulation of multiple key genes to improve l-threonine in Escherichia coli
Flask cultivation for l-threonine production in E. coli strains TWF001, TWF0010, TWF051, TWF052, TWF053, TWF054 and TWF055. a Genetic comparison of the strains constructed by dynamic regulation genes arcA, cpxR, gadE, pykF and fadR. b Cell growth; c glucose consumption; dl-threonine production; e relative transcription levels of arcA, cpxR, gadE, pykF and fadR in TWF051, TWF052, TWF053, TWF054 and TWF055, respectively. The error bars indicate the standard deviations from three independent experiments