NDLI: Identification of transposable elements which activate gene expression in Pseudomonas cepacia.

Content Provider	PubMed Central
Author	Scordilis, G. E. Ree, H. Lessie, T. G.
Abstract	This study demonstrated that transposable elements in Pseudomonas cepacia could be inserted upstream of a poorly expressed gene and increase its expression more than 30-fold. Five elements, TnPc1, IS402, IS403, IS404, and IS405, were isolated by their ability to increase expression of the beta-lactamase gene of the broad-host-range plasmid pRP1. Increased expression resulted only from insertion of these elements, suggesting that insertional activation is an important means of elevating gene expression in this organism. Four of the elements inserted between a PstI site within the beta-lactamase gene and a BamHI site located 375 base pairs upstream of its promoter. The element IS403 inserted distal to the BamHI site within the coding region for the gene tnpR, suggesting that insertional activation can act over greater than expected distances. In addition, the element IS402 activated the beta-lactamase genes carried on plasmids pRP1 and pMR5 (temperature-sensitive pRP1) equally well in opposite orientations, demonstrating that insertional activation by this element occurs independent of its orientation.
Starting Page	8
File Format	PDF
ISSN	10985530
e-ISSN	10985530
Journal	Journal of Bacteriology
Issue Number	1
Volume Number	169
Language	English
Publisher Date	1987-01-01
Access Restriction	Open
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Molecular Biology Microbiology

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Identification of transposable elements which activate gene expression in Pseudomonas cepacia.