Figure 3

L-lysine, L-arginine and L-ornithine production by C. glutamicum DM1933, ARG1 and ORN1 strains either with empty vector (white column represents pVWEx1) or overproducing phosphoglycerate kinase (black column represents pVWEx1- pgk ). Cells were grown in CgXII minimal medium with 4% glucose as a carbon source. Cell pellets of cultures grown in glucose CgXII minimal medium after consumption of the carbon source. Data represent mean values and standard deviations of six replicates from two independent cultivations with three flasks per strain each. Significant differences (p < 0.01 in a student’s t-test) between empty vector control (pVWEx1) and strains carrying pVWEx1-pgk are highlighted by an asterisk.