Figure 5
Time courses of dry cell weight (a), residual sugar concentration (b), the production of succinate (c), relative expression levels of sbtA, bicA, ppc and pck (d) and the specific activities of the PCK and PPC (e) under the collaborative expression of single HCO3− transporter and single CO2 fixation gene in fed-batch fermentation. Symbols for E. coli strains: Tang1515 (sbtA and ppc) (black triangle, 
), Tang1516 (bicA and ppc) (open circle, ○), Tang1517 (sbtA and pck) (black circle, 
), Tang1518 (bicA and pck) (open square, 
). Error bars show standard deviation (n = 3). Different letters (e.g., (a–e) were assigned to significantly different groups and for the results between two groups.
