Abstract

Mycolactones are polyketide macrolide toxins produced by the emerging human pathogen Mycobacterium ulcerans, the causative agent of the destructive skin disease Buruli ulcer.1, 2 Mycolactone appears to be the primary virulence determinant for the infection,2 and purified mycolactone has potent cytotoxic, apoptotic and immunomodulatory properties.2–4

Highlights

  • Mycolactones are polyketide macrolide toxins produced by the emerging human pathogen Mycobacterium ulcerans, the causative agent of the destructive skin disease Buruli ulcer.[1,2] Mycolactone appears to be the primary virulence determinant for the infection,[2] and purified mycolactone has potent cytotoxic, apoptotic and immunomodulatory properties.[2,3,4]

  • We report that when Cyp140A7 was expressed in the recently discovered fish pathogen Mycobacterium marinum DL045, a novel mycolactone was produced from the engineered strain

  • We first examined the structure of the mycolactones normally produced by several recently discovered Mycobacterium ulcerans-like mycobacteria isolated from diseased fish.[14,17]

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Summary

Introduction

Mycolactones are polyketide macrolide toxins produced by the emerging human pathogen Mycobacterium ulcerans, the causative agent of the destructive skin disease Buruli ulcer.[1,2] Mycolactone appears to be the primary virulence determinant for the infection,[2] and purified mycolactone has potent cytotoxic, apoptotic and immunomodulatory properties.[2,3,4]. Australian strains of M. ulcerans, whose virulence plasmid lacks MUP_053, typically produce mycolactone C, in which the C12’ hydroxy group is missing.[16] We wished to test whether Cyp140A7 might oxidise an alternative

Results
Conclusion

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