Abstract
Partial sequencing of the hsp65 gene was used for the identification of rapidly growing mycobacteria (RGM). A 441-bp fragment (A. Telenti, F. Marchesi, M. Balz, F. Bally, E. Böttger, and T. Bodmer, J. Clin. Microbiol. 31:175-178, 1993) was amplified and sequenced by an automated fluorescence-based method involving capillary electrophoresis. Type strains of 10 RGM species were first studied. Each species had a unique nucleotide sequence, distinguishing it clearly from the other species. A panel of strains from the four main RGM species responsible for human infections, Mycobacterium abscessus, Mycobacterium chelonae, Mycobacterium fortuitum, and Mycobacterium peregrinum, was also studied. There were few sequence differences within each of these species (<2% of bases were different from the type strain sequence), and they had no effect on species assignment. hsp65 sequencing unambiguously differentiated M. chelonae and M. abscessus, two species difficult to identify by classical methods and 16S rRNA gene sequencing. The devised procedure is a rapid and reliable tool for the identification of RGM species.
MeSH Terms
Antigens, Bacterial/genetics
Bacterial Proteins
Base Sequence
Chaperonin 60
Chaperonins/genetics
Genetic Variation
Humans
Molecular Sequence Data
Mycobacterium/classification,genetics,growth & development
Mycobacterium Infections/diagnosis
Mycobacterium tuberculosis/genetics,growth & development
Phylogeny
Polymerase Chain Reaction/methods
RNA, Bacterial/genetics
RNA, Ribosomal, 16S/genetics
Sequence Alignment
Sequence Homology, Nucleic Acid
Chemicals
Antigens, Bacterial
Bacterial Proteins
Chaperonin 60
RNA, Bacterial
RNA, Ribosomal, 16S
heat-shock protein 65, Mycobacterium
Chaperonins
Authors & Affiliations
8 authors, click to expand affiliations / ORCID
Ringuet H
Service de Microbiologie, Hôpital Necker-Enfants Malades, 75015 Paris, France.
Akoua-Koffi C
Honore S
Varnerot A
Vincent V
Berche P
Gaillard J L
Pierre-Audigier C
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