Format

Send to

Choose Destination
See comment in PubMed Commons below
J Clin Microbiol. 2013 May;51(5):1381-8. doi: 10.1128/JCM.02966-12. Epub 2013 Feb 13.

Region of difference 4 in alpine Mycobacterium caprae isolates indicates three variants.

Author information

1
Bavarian Health and Food Safety Authority, Oberschleissheim, Germany. janina.domogalla@lgl.bayern.de

Abstract

The lack of complete genome sequence information for Mycobacterium caprae complicates a robust differentiation of M. caprae and Mycobacterium bovis. In this study, the presence or absence of M. caprae-specific single nucleotide polymorphisms in lepA and gyrB genes was assessed. The region of difference 4 (RD4) was analyzed for the identification and characterization of M. caprae. Molecular characteristics were evaluated in 12 recent M. caprae isolates from livestock and wildlife collected over a 3-year period in Bavaria, Germany. Conventional PCR strategies, sequence analysis of PCR fragments, and data from a next-generation sequencing approach together with variable-number tandem-repeat genotyping were utilized. Single nucleotide polymorphisms in the lepA and gyrB genes indicating the presence of M. caprae were detected in all the isolates. At least three different RD4 variants were found for Alpine M. caprae isolates. The results demonstrate that the RD4 region is rather heterogeneous in M. caprae genomes. As assumed by others, the presence of RD4 is critical for PCR-based differentiation of M. caprae from M. bovis, but in addition, the observed variability of RD4 allows the identification of M. caprae genotypes and may be indicative of a geographical-type appearance.

PMID:
23408688
PMCID:
PMC3647898
DOI:
10.1128/JCM.02966-12
[Indexed for MEDLINE]
Free PMC Article
PubMed Commons home

PubMed Commons

0 comments
How to join PubMed Commons

    Supplemental Content

    Full text links

    Icon for HighWire Icon for PubMed Central
    Loading ...
    Support Center