Fig. 2

Increasing the precursor supply to push carbon into the MK-7 synthesis pathway. a Schematic for the overexpression of dxs, fni, dxr, menF, and aroA in the genome of the BS168 under the regulation of the promoters P₄₃ or P_hbs, resulting in the generation of recombinant strains BS001 through to BS005. b Growth curves for BS168, BS001, BS002, BS004, and BS005. c Production of MK-7 in BS168, BS001, BS002, BS004, and BS005 after 120 h fermentation. All experiments were performed in triplicate and error bars represent the standard deviation (SD)