Mycobacterium sherrisii sp. nov., a slow-growing non-chromogenic species.

International Journal of Systematic and Evolutionary Microbiology
Jakko van IngenDick van Soolingen

Abstract

'Mycobacterium sherrisii' is an undescribed species that appears to be emerging, in particular, among HIV-positive patients originating from Africa. To describe 'M. sherrisii', to ensure that the species name is validly published and to define its phylogenetic position, we collected 11 of these strains reported in five previous studies, and subjected them to biochemical identification, cell-wall mycolic acid analysis and sequencing of multiple housekeeping genes. The bacteria formed smooth and generally non-chromogenic colonies after 2-3 weeks of subculture at 24-37 °C; photochromogenic and scotochromogenic pigmentation were exhibited by three and two strains, respectively. The strains were positive for the heat-stable catalase test, but negative in tests for hydrolysis of Tween 80, nitrate reduction, β-glucosidase and 3-day arylsulfatase. Mycolic acid patterns, obtained by HPLC, resembled a trimodal profile similar to those of type strains of Mycobacterium simiae, Mycobacterium lentiflavum, Mycobacterium triplex and Mycobacterium genavense. The 16S rRNA gene sequences of the 11 strains differed by 4 bp (99.7 % similarity) from that of the type strain of the closest related species, M. simiae ATCC 25275(T). Levels of internal t...Continue Reading

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Citations

Apr 19, 2012·Clinical Infectious Diseases : an Official Publication of the Infectious Diseases Society of America·John A CrumpJohn A Bartlett
May 31, 2014·Genome Announcements·Mohamed SassiMichel Drancourt
Feb 20, 2013·The American Journal of Tropical Medicine and Hygiene·Juan TajánFerran Segura
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