PMID- 10921952 OWN - NLM STAT- MEDLINE DCOM- 20000920 LR - 20200724 IS - 0095-1137 (Print) IS - 1098-660X (Electronic) IS - 0095-1137 (Linking) VI - 38 IP - 8 DP - 2000 Aug TI - Mapping of IS6110 insertion sites in two epidemic strains of Mycobacterium tuberculosis. PG - 2923-8 AB - A widely distributed strain designated 210 was identified in a study of the diversity of Mycobacterium tuberculosis DNA fingerprints from three geographically separate states in the United States. This strain is characterized by a 21-band fingerprint pattern when probed with IS6110, and the pattern is similar to that displayed by strains designated W. Intracellular growth of strain 210 isolates in human macrophages is significantly faster than that of isolates from other clusters or nonclustered isolates. The purpose of this study was to identify the sites of IS6110 insertions in strain 210 and compare these to IS6110 insertion sites in strain W. Our hypothesis is that an IS6110 insertion site(s) could possibly be responsible for a strain's increased capacity for transmission and/or replication. In this report, the insertion sites in strains 210 and W are described and referenced to their location in the M. tuberculosis H37Rv genome sequence. The W and 210 strains have 17 identical sites of IS6110 insertion and additional sequence not found in H37Rv but present in other clinical isolates. The IS6110 insertion site in the 36-bp direct repeat (DR) region of strains 210 and W has 15 spacers in the left flanking region. The DR region on the right side of IS6110 has been deleted. Five sites of insertion in strain 210 not found in strain W are described, as well as two unique sites in strain W. One copy of IS6110 was found to reside 55 bp in the ctpD gene. This gene is expressed, indicating that IS6110 can provide a promoter sequence for the transcription of genes. FAU - Beggs, M L AU - Beggs ML AD - Departments of Pathology, University of Arkansas for Medical Sciences and J. L. McClellan Memorial Veterans Hospital, Little Rock, Arkansas 72205, USA. BeggsMarjorieL@exchange.uams.edu FAU - Eisenach, K D AU - Eisenach KD FAU - Cave, M D AU - Cave MD LA - eng SI - GENBANK/AF227479 SI - GENBANK/AF227480 SI - GENBANK/AF227481 SI - GENBANK/AF227482 SI - GENBANK/AF227483 SI - GENBANK/AF227484 SI - GENBANK/AF227485 SI - GENBANK/AF227486 SI - GENBANK/AF227487 SI - GENBANK/AF227488 SI - GENBANK/AF227489 SI - GENBANK/AF227490 SI - GENBANK/AF227491 SI - GENBANK/AF227492 SI - GENBANK/AF227493 SI - GENBANK/AF227494 SI - GENBANK/AF227495 SI - GENBANK/AF227496 SI - GENBANK/AF227497 SI - GENBANK/AF228671 SI - GENBANK/AF228676 SI - GENBANK/AF228677 SI - GENBANK/AF228678 SI - GENBANK/AF230202 SI - GENBANK/AF230209 SI - GENBANK/AF257113 SI - GENBANK/AF257114 SI - GENBANK/AF270486 PT - Journal Article PL - United States TA - J Clin Microbiol JT - Journal of clinical microbiology JID - 7505564 RN - 0 (DNA Transposable Elements) SB - IM MH - Base Sequence MH - Blotting, Southern MH - *Chromosome Mapping MH - DNA Fingerprinting MH - *DNA Transposable Elements MH - *Disease Outbreaks MH - Gene Expression MH - Humans MH - Molecular Sequence Data MH - Mycobacterium tuberculosis/classification/*genetics/isolation & purification MH - Reverse Transcriptase Polymerase Chain Reaction MH - Tuberculosis, Pulmonary/epidemiology/*microbiology PMC - PMC87149 EDAT- 2000/08/02 11:00 MHDA- 2000/09/23 11:01 PMCR- 2000/08/01 CRDT- 2000/08/02 11:00 PHST- 2000/08/02 11:00 [pubmed] PHST- 2000/09/23 11:01 [medline] PHST- 2000/08/02 11:00 [entrez] PHST- 2000/08/01 00:00 [pmc-release] AID - 0127 [pii] AID - 10.1128/JCM.38.8.2923-2928.2000 [doi] PST - ppublish SO - J Clin Microbiol. 2000 Aug;38(8):2923-8. doi: 10.1128/JCM.38.8.2923-2928.2000.