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. Author manuscript; available in PMC: 2016 Aug 1.
Published in final edited form as: Biochim Biophys Acta. 2015 May 10;1854(8):1054–1070. doi: 10.1016/j.bbapap.2015.05.001

Figure 11. Inhibiting ornithine decarboxylase to generate novel siderophores.

Figure 11

A. Putrebactin, the natural siderophore of S. putrefaciens with putrescine (diaminobutane, red) incorporated. B. When ornithine decarboxylase is inhibited, preventing the production of putrescine, then S. putrefaciens makes desferrioxamine, using cadaverine (diaminopentane, green) instead. C. When ornithine decarboxylase is inhibited and an external source of diaminobutene (blue) is added to the culture, then an unsaturated form of putrebactin is formed.