PMID- 21325559 OWN - NLM STAT- MEDLINE DCOM- 20110718 LR - 20240320 IS - 1098-660X (Electronic) IS - 0095-1137 (Print) IS - 0095-1137 (Linking) VI - 49 IP - 4 DP - 2011 Apr TI - Preferential deletion events in the direct repeat locus of Mycobacterium tuberculosis. PG - 1318-22 LID - 10.1128/JCM.01848-10 [doi] AB - The "Harlingen" IS6110 restriction fragment length polymorphism (RFLP) cluster has linked over 100 tuberculosis cases in The Netherlands since 1993. Four Mycobacterium tuberculosis isolates that were epidemiologically linked to this cluster had different spoligotype patterns, as well as slightly divergent IS6110 profiles, compared to the majority of the isolates. Sequencing of the direct repeat (DR) locus revealed sequence polymorphisms at the putative deletion sites. These deletion footprints provided evidence for independent deletions of the central region of the DR locus in three isolates, while the different genotype of the fourth isolate was explained by transmission. Our finding suggests that convergent deletions in the DR locus occur frequently. However, deletion footprints are not suitable to detect convergent deletions in the DR because they seem to be exceptional. Deletion footprints in the DR were not described previously, and we did not observe them in any public M. tuberculosis complex sequences. We conclude that preferential deletions in the DR loci of closely related strains are usually an unnoted event that interferes with clustering of closely related strains. FAU - Schurch, Anita C AU - Schurch AC AD - Tuberculosis Reference Laboratory, National Institute for Public Health and Environment (RIVM), Centre for Infectious Disease Control (CIbpSH-D2), Laboratory for Infectious Disease and Perinatal Screening, P.O. Box 1, 3720 BA Bilthoven, the Netherlands. FAU - Kremer, Kristin AU - Kremer K FAU - Kiers, Albert AU - Kiers A FAU - Boeree, Martin J AU - Boeree MJ FAU - Siezen, Roland J AU - Siezen RJ FAU - van Soolingen, Dick AU - van Soolingen D LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20110216 PL - United States TA - J Clin Microbiol JT - Journal of clinical microbiology JID - 7505564 RN - 0 (DNA Transposable Elements) RN - 0 (DNA, Bacterial) SB - IM MH - Bacterial Typing Techniques MH - DNA Transposable Elements MH - DNA, Bacterial/*genetics MH - Genotype MH - Humans MH - Molecular Epidemiology MH - Molecular Typing MH - Mycobacterium tuberculosis/*genetics MH - Netherlands/epidemiology MH - Polymorphism, Genetic MH - Polymorphism, Restriction Fragment Length MH - *Repetitive Sequences, Nucleic Acid MH - Sequence Analysis, DNA MH - *Sequence Deletion MH - Tuberculosis/*epidemiology/microbiology PMC - PMC3122804 EDAT- 2011/02/18 06:00 MHDA- 2011/07/19 06:00 PMCR- 2011/10/01 CRDT- 2011/02/18 06:00 PHST- 2011/02/18 06:00 [entrez] PHST- 2011/02/18 06:00 [pubmed] PHST- 2011/07/19 06:00 [medline] PHST- 2011/10/01 00:00 [pmc-release] AID - JCM.01848-10 [pii] AID - 1848-10 [pii] AID - 10.1128/JCM.01848-10 [doi] PST - ppublish SO - J Clin Microbiol. 2011 Apr;49(4):1318-22. doi: 10.1128/JCM.01848-10. Epub 2011 Feb 16.