Effects of the presence of ColE1 plasmid DNA in Escherichia coli on the host cell metabolism

Table 1 Growth parameters of E. coli strains BL21, BL21/pOri1 and BL21/pOri2 cultured in the chemostat system at different growth rates.

^a The following growth rates were determined when bacteria were cultured for 16 h in the batch cultivation: BL21, 0.46 h^-1; BL21/pOri1, 0.39 h^-1; BL21/pOri2, 0.29 h^-1. Abbreviations: Q_Gluc (mmol), Glucose consumption amount; μ (h^-1), growth rate; q_Gluc (mmol h^-1), Glucose consumption rate; Y_biomass (g), Biomass yield; y_biomass (g h^-1), Biomass yield rate; r_Gluc (mmol g^-1 h^-1), Glucose consumption rate per biomass; r_Ace (mmol g^-1 h^-1), Acetate yield per biomass; r_O2 (mmol g^-1 h^-1), Oxygen uptake rates per biomass; r_CO2 (mmol g^-1 h^-1), CO₂ secretion per biomass; Plas. copies, Plasmid copy number

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