title: Mycobacterium arupense sp. nov., a non-chromogenic bacterium isolated from clinical specimens.
abstract: Several Mycobacterium-like organisms related to the Mycobacterium terrae complex have been isolated from clinical samples. In the clinical microbiology laboratory, partial 16S rRNA gene sequencing (approximately the first 500 bp) rather than full 16S rRNA gene sequencing is often used to identify Mycobacterium species. Partial 16S rRNA gene sequence analysis revealed 100 % similarity between 65 clinical isolates and Mycobacterium sp. MCRO 6 (GenBank accession no. X93032). Even after sequencing the nearly full-length 16S rRNA gene, closest similarity was only 99.6 % to Mycobacterium nonchromogenicum ATCC 19530(T). Sequencing of the nearly full-length 16S rRNA gene, the 16S-23S internal transcribed spacer region and the hsp65 gene did not reveal genotypic identity with the type strains of M. nonchromogenicum, M. terrae or Mycobacterium triviale. Although sequence analysis suggested that these clinical isolates represented a novel species, mycolic acid analysis by HPLC failed to distinguish them from M. nonchromogenicum. Therefore, phenotypic analysis including growth characterization, antibiotic susceptibility testing and biochemical testing was performed. These strains from clinical samples should be recognized as representing a novel species of the genus Mycobacterium, for which the name Mycobacterium arupense sp. nov. is proposed. The type strain is AR30097(T) (=ATCC BAA-1242(T) = DSM 44942(T)).
authors.affiliation: ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT 84108, USA.
authors.forename: Joann L
authors.initials: JL
authors.lastname: Cloud
authors.affiliation: Department of Pathology, University of Utah, Salt Lake City, UT 84108, USA.|ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT 84108, USA.
authors.forename: Jay J
authors.initials: JJ
authors.lastname: Meyer
authors.affiliation: ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT 84108, USA.
authors.forename: June I
authors.initials: JI
authors.lastname: Pounder
authors.affiliation: Texas Department of State Health Services, Austin, TX 78756, USA.
authors.forename: Kenneth C
authors.initials: KC
authors.lastname: Jost
authors.affiliation: Microbiology Division, Johns Hopkins University School of Medicine, Baltimore, MD 21087, USA.
authors.forename: Amy
authors.initials: A
authors.lastname: Sweeney
authors.affiliation: Microbiology Division, Johns Hopkins University School of Medicine, Baltimore, MD 21087, USA.
authors.forename: Karen C
authors.initials: KC
authors.lastname: Carroll
authors.affiliation: Department of Pathology, University of Utah, Salt Lake City, UT 84108, USA.|ARUP Institute for Clinical and Experimental Pathology, Salt Lake City, UT 84108, USA.
authors.forename: Gail L
authors.initials: GL
authors.lastname: Woods
mesh_terms: D001483:Base Sequence; D006801:Humans; D008969:Molecular Sequence Data; D009161:Mycobacterium / Q000145:classification* / Q000235:genetics* / Q000302:isolation & purification; D009164:Mycobacterium Infections; D010802:Phylogeny; D012329:RNA, Bacterial / Q000235:genetics; D012336:RNA, Ribosomal, 16S / Q000235:genetics; D013710:Tendons / Q000382:microbiology*
chemical_list: D012329:RNA, Bacterial; D012336:RNA, Ribosomal, 16S