An IS900-like sequence found in aMycobacteriumsp. other thanMycobacterium aviumsubsp.paratuberculosis
Open Access
- 1 April 2002
- journal article
- Published by Oxford University Press (OUP) in FEMS Microbiology Letters
- Vol. 209 (2), 267-271
- https://doi.org/10.1111/j.1574-6968.2002.tb11142.x
Abstract
The insertion sequence IS900 has been considered specific for Mycobacterium avium subsp. paratuberculosis (M. paratuberculosis) and has, therefore, been used as the target gene for diagnostic PCR of M. paratuberculosis. From a healthy dairy cow we have isolated and characterised a mycobacterium harbouring one copy of a sequence with 94% identity to IS900 at the nucleic acid level. The isolate was shown to be related to Mycobacterium cookii, as assessed by 16S rRNA sequencing. Strong amplifications were obtained with several PCR primers described for detection of IS900. This finding shows the need of alternative PCR systems based on other genes than IS900 to confirm the presence of M. paratuberculosis.Keywords
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