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 is a species of the phylum actinobacteria (Gram-positive bacteria with high guanine and cytosine content, one of the dominant phyla of all bacteria), belonging to the genus mycobacterium.


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

Colony characteristics


  • 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.


Opportunistic pathogen, disseminated mycobacteriosis, Biosafety level 2.

Type Strain[edit]

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


  • Springer et al. 1996. Mycobacterium conspicuum sp. nov., a new species isolated from patients with disseminated infections. J. Clin. Microbiol., 33, 2805-2811. PMID 8576323

External links[edit]