Phylum Actinobacteria, Class Actinobacteria, Order Actinomycetales, Suborder Corynebacterineae, Family Mycobacteriaceae, Genus
Mycobacterium, Mycobacterium parakoreense Kim et al. 2013.
Acid-alcohol-fast rods, frequently curved. Spores or filaments are not produced.
On Middlebrook 7H10 agar medium, mature colonies develop in about 4 or more
weeks. Colonies grown on this medium are usually rough, white or yellow-pigmented
forms. Grows at 25 ºC, but not at 45 ºC (optimally at 37 ºC). Can grow in 5% (w/v) NaCl
media but not on MacConkey agar without crystal violet.
Isolated from human sputum in Seoul, Korea. Resistant to thiophen-2-carboxylic acid hydrazide TCH (10 μg/ml), and ethambutol (5
μg/ml). Susceptible to p-nitrobenzoate (PNB) and picric acid.
- Kim BJ, Hong SH, Yu HK, Park YG, Jeong J, Lee SH, Kim SR, Kim K, Kook YH, Kim BJ. Mycobacterium parakoreense sp. nov., a
slowly growing non-chromogenic species related to Mycobacterium koreense, isolated from a human clinical specimen. Int J Syst
Evol Microbiol 2013; 63:2301-2308.
Positive results for alkaline phosphatase, esterase (C4), esterase lipase (C8), heat-stable catalase, nitrate reductase,
pyrazinamidase, and Tween 80 hydrolysis.
Negative results for arylsulfatase (3 and 14 days), lipase (C14), niacin accumulation, tellurite reductase, and urease.
(c) Costin Stoica