Fig. 1From: Improvement of FK506 production via metabolic engineering-guided combinational strategies in Streptomyces tsukubaensisSchematic representation of metabolic pathways involved in FK506 biosynthesis. Precursors for FK506 biosynthesis were shown in purple. Targets for improved FK506 production were shown in red. Some important genes involved in the biosynthesis of relative precursors were also shown (italics)Back to article page