Fig. 3From: Bottom-up synthetic biology approach for improving the efficiency of menaquinone-7 synthesis in Bacillus subtilisOptimising the overexpression of the key enzyme MenA and inhibiting the MK-7 pathway. a Schematic diagram depicting the construction of BS006, BS007, BS008, and BS009. b The titres of MK-7 in BS006, BS007, BS008, and BS009 after 120Â h fermentation. c Growth curves of BS006, BS007, BS008, and BS009. d Relative expression of menA in BS168, BS007, BS008, and BS009. All experiments were performed in triplicate and error bars represent the standard deviation (SD)Back to article page