Mycobacterium conspicuum

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Mycobacterium conspicuum

Scientific classification

Kingdom:	Bacteria
Phylum:	Actinobacteria
Order:	Actinomycetales
Suborder:	Corynebacterineae
Family:	Mycobacteriaceae
Genus:	Mycobacterium
Species:	M. conspicuum

Binomial name

Mycobacterium conspicuum
Springer et al. 1996, ATCC 700090

Mycobacterium conspicuum

1 Description
2 Pathogenesis
3 [Biological type|Type Strain]]
4 References

[edit] Description

Gram-positive and nonmotile acid-fast coccobacilli. Does not form spores, capsules or aerial hyphae.

Colony characteristics

Dysgonic and nonphotochromogenic, pale yellow colonies on Löwenstein-Jensen agar.

Physiology

Slow growth on Löwenstein-Jensen medium at temperatures between 22°C and 31°C after 2-3 weeks.
Susceptible to ethambutol, rifampin, streptomycin, resistant to pyrazinamide.
Synthesis of α- and keto-mycolates and wax esters.
no tolerance to 5% NaCl, positive for Tween 80 hydrolysis and for 10-day-arylsulfatase. Negative for production of nicotinic acid, acetamidase, benzamidase, urease, isonicotinamidase, nicotinamidase, pyrazinamidase, succinidamidase, nitrate reductase and tellurite reduction.

[edit] Pathogenesis

Opportunistic pathogen, disseminated mycobacteriosis, Biosafety level 2.

[edit] [Biological type|Type Strain]]

First isolated from two male HIV infected patients in Germany. Strain 3895/92 = ATCC 700090 = CIP 105165 = DSM 44136.

[edit] References

Springer et al. 1996. Mycobacterium conspicuum sp. nov., a new species isolated from patients with disseminated infections. J. Clin. Microbiol., 33, 2805-2811.]