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Mycobacterium heckeshornense is a species of the phylum Actinomycetota (Gram-positive bacteria with high guanine and cytosine content, one of the dominant phyla of all bacteria), belonging to the genus Mycobacterium.
Description
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.
- 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.
Pathogenesis
- Seems to be pathogenic in immunocompetent humans.
- Biosafety level unknown
Type strain
- The type strain was isolated from human lung by bronchoscopy.
Strain S369 = CCUG 51897 = DSM 44428
References
- 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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