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Typing Method for the QUB11a Locus of Mycobacterium tuberculosis: IS6110 Insertions and Tandem Repeat Analysis.

ABSTRACT: QUB11a is used as a locus for variable number of tandem repeats (VNTR) analysis of Mycobacterium tuberculosis Beijing lineage. However, amplification of QUB11a occasionally produces large fragments (>1,400?bp) that are not easily measured by capillary electrophoresis because of a lack of the typical stutter peak patterns that are used for counting repeat numbers. IS6110 insertion may complicate VNTR analysis of large QUB11a fragments in M. tuberculosis. We established a method for determining both tandem repeat numbers and IS6110 insertion in the QUB11a locus of M. tuberculosis using capillary electrophoresis analysis and BsmBI digestion. All 29 large QUB11a fragments (>1,200?bp) investigated contained IS6110 insertions and varied in the number of repeats (18 patterns) and location of IS6110 insertions. This method allows VNTR analysis with high discrimination.

SUBMITTER: Maeda-Mitani E

PROVIDER: S-EPMC5080463 | biostudies-literature | 2016

REPOSITORIES: biostudies-literature

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Typing Method for the QUB11a Locus of Mycobacterium tuberculosis: IS6110 Insertions and Tandem Repeat Analysis.

Maeda-Mitani Eriko E Murakami Koichi K Oishi Akira A Etoh Yoshiki Y Sera Nobuyuki N Fujimoto Shuji S

BioMed research international 20161016

QUB11a is used as a locus for variable number of tandem repeats (VNTR) analysis of Mycobacterium tuberculosis Beijing lineage. However, amplification of QUB11a occasionally produces large fragments (>1,400 bp) that are not easily measured by capillary electrophoresis because of a lack of the typical stutter peak patterns that are used for counting repeat numbers. IS6110 insertion may complicate VNTR analysis of large QUB11a fragments in M. tuberculosis. We established a meth ...[more]

PMID: 27812529

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