Fig. 4From: Engineering protein production by rationally choosing a carbon and nitrogen source using E. coli BL21 acetate metabolism knockout strainsMaximal extracellular orotate concentrations. Maximal extracellular orotate concentrations detected for E. coli BL21 wt and knockout strains growing in MM9 or TB7 medium supplemented with glucose or glycerol as the carbon sourceBack to article page