This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Services Similar articles in this journal Similar articles in PubMed Alert me to new issues of the journal Download to citation manager Reprints and Permissions Copyright Information Books from ASM Press MicrobeWorld Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Forsyth, M. H. Articles by Geary, S. J. Search for Related Content PubMed PubMed Citation Articles by Forsyth, M. H. Articles by Geary, S. J.

 Previous Article  |  Next Article 

J. Bacteriol., 02 1996, 917-921, Vol 178, No. 3
Copyright © 1996, American Society for Microbiology

The repetitive element Rep MP 1 of Mycoplasma pneumoniae exists as a core element within a larger, variable repetitive mosaic

MH Forsyth and SJ Geary
Department of Pathobiology, University of Connecticut, Storrs 06269- 3089, USA.

The repetitive element Rep MP 1 has been previously described as a 300- bp element present within the chromosome of Mycoplasma pneumoniae in at least 10 copies. Sequence found flanking Rep MP 1 in lambda clone 5B52 has been demonstrated to exist in multiple copies within the genome of M. pneumoniae. A HindIII M. pneumoniae fragment containing the lambda MP 5B52 insert and its flanking sequences was cloned into pBluescript. Sequence comparisons of this clone, designated pMPH 624-20, with nucleotide database entries showed that in addition to the 300-bp Rep MP 1 element, flanking sequence blocks were conserved within several other cloned sequences. These short repeated sequences, approximately 80, 56, and 71 nucleotides long, are termed sRep A, sRep B, and sRep C, respectively. These sRep regions were used as probes in the selection of cloned sequences containing these repetitive flanking regions. Comparison of these sequences demonstrated that the 300-bp Rep MP 1 elements is actually the core element within a larger, variable repetitive mosaic. The repetitive regions surrounding the core element are found in various combinations, arrangements, and distances from the core in a mosaic pattern. These newly identified portions of the mosaic do not exist independently of the core element. The core appears to be the only invariant portion of this repetitive mosaic.

This article has been cited by other articles:

• Musatovova, O., Kannan, T. R., Baseman, J. B. (2008). Genomic Analysis Reveals Mycoplasma pneumoniae Repetitive Element 1-Mediated Recombination in a Clinical Isolate. Infect. Immun. 76: 1639-1648 [Abstract] [Full Text]  
• Razin, S., Yogev, D., Naot, Y. (1998). Molecular Biology and Pathogenicity of Mycoplasmas. Microbiol. Mol. Biol. Rev. 62: 1094-1156 [Abstract] [Full Text]