Figure 4From: Metabolic engineering of Escherichia coli to optimize melanin synthesis from glucoseCulture profiles carried out in shaken flasks with strains modified for L-tyrosine production from glucose (ca. 10 g/L) in medium lacking CuSO 4 (tyrosinase is inactive without CuSO 4 ). Symbols for strains: *W3110M, ■ W3110MG, ▲ W3110MGT, ▼VH33MGT, ♦ VH33MGTR and ● VH33MGTRK. Graphs represent the mean of two independent experiments.Back to article page