Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium angelicum Pourahmad et al. 2015.
Acid-fast rods. Non-motile. Non-spore-forming.
Colonies are 3-4 mm in diameter, smooth and milky white in the light and in the dark.
Visible growth appears after 2 weeks of incubation at 25-37 ºC. No growth at 42 ºC.
No growth on MacConkey agar without crystal violet or on media supplemented with
Undetermined. One strain was isolated from a patient with type II respiratory failure.
Isolated from a freshwater angelfish (Pterophyllum scalare) in Slovenia. One strain was isolated from human bronchoalveolar lavage.
Susceptible to amikacin, clarithromycin, ethambutol, linezolid, moxifloxacin, rifabutin, hydroxylamine, isoniazid and p-nitrobenzoic
acid. Resistant to thiacetazone.
- Pourahmad F, Pate M, Ocepek M, Borroni E, Cabibbe AM, Capitolo E, Cittaro D, Frizzera E, Jencic V, Mariottini A, et al.
Mycobacterium angelicum sp. nov., a non-chromogenic, slow-growing species isolated from fish and related to Mycobacterium
szulgai. Int J Syst Evol Microbiol 2015; 65:4724-4729.
- E. Davies, J. Wieboldt, T. Stanley, Y. Maeda, M. Smyth, S. Stanley, M. Mcclean, W. Evans, C. Funston, B. C. Millar, C. E. Goldsmith &
J. E. Moore (2012) Isolation and identification of ‘Mycobacterium angelicum’ from a patient with type II respiratory failure:
suggested reporting guidelines to molecular clinical laboratories, British Journal of Biomedical Science, 69:3, 134-136, DOI:
Positive results for semi-quantitative catalase (>45 mm foam), nitrate reduction, tellurite reduction, and urease.
Negative results for thermostable catalase (68 ºC), beta-glucosidase, niacin accumulation, and Tween 80 hydrolysis.
(c) Costin Stoica