Mycobacterium heckeshornense

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Mycobacterium heckeshornense

Gram-positive, nonmotile and acid-fast rods. Cells are typically rod-shaped, with some coccoid forms

Colony characteristics Smooth, yellow scotochromogenic colonies appear after 4 weeks of culture.

Physiology

• Slowly growing organism, colonies appear after 4 weeks of growth.
• Able to grow at 37°C and 45°C.

Differential characteristics

• The phylogenetic position of this species is within the cluster defined by M. xenopi and M. botniense.
• Key differentiating features are negative tests for arylsulfatase and pyrazinamidase and susceptibility to antimycobacterial drugs.

• Seems to be pathogenic in immunocompetent humans.
• Biosafety level unknown

• The type strain was isolated from human lung by bronchoscopy.

Strain S369 = CCUG 51897 = DSM 44428

• Roth et al. 2000. Mycobacterium heckeshornense sp. nov., a new pathogenic slowly growing Mycobacterium sp. causing cavitary lung disease in an immunocompetent patient. J. Clin. Microbiol.,38, 4102-4107.

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