Figure 5From: Metabolic engineering of Escherichia coli to optimize melanin synthesis from glucoseFourier transform infrared spectroscopy spectra of control melanin and samples produced by engineered E. coli strain: D, melanin produced by W3110MGTR. E, melanin produced by W3110MGTRK. REF, eumelanin standard. Melanin produced by engineered E. coli strains were purified as described in the Materials and Methods section.Back to article page