Equivalence of Mycobactins from Mycobacterium senegalense, Mycobacterium farcinogenes and Mycobacterium fortuitum

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Abstract
Mycobactins were isolated from 5 strains designated M. farcinogenes and a similar number designated M. senegalense following growth under conditions of Fe-limitation. These lipid-soluble Fe-chelating compounds were characterized by a combination of TLC and high-performance liquid chromatography. The mycobactins from both the slow-growing M. farcinogenes and the rapidly-growing M. senegalense strains proved impossible to differentiate both from each other and from those produced by strains of M. fortuitum, indicating a close relationship between all 3 spp. However, Nocardia farcinica, previously implicated with the bovine farcy strains, produced a different mycobactin which was easily distinguished by TLC alone.