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Critical Reviews™ in Eukaryotic Gene Expression
Factor de Impacto: 1.841 Factor de Impacto de 5 años: 1.927 SJR: 0.649 SNIP: 0.516 CiteScore™: 1.96

ISSN Imprimir: 1045-4403
ISSN En Línea: 2162-6502

Critical Reviews™ in Eukaryotic Gene Expression

DOI: 10.1615/CritRevEukaryotGeneExpr.v14.i12.30
12 pages

SCE Jumping: Genetic Tool for Allelic Exchange in Bacteria

Sandy M. Wong
Department of Molecular Genetics and Microbiology, University of Massachusetts Medical School, 55 Lake Avenue North, Worcester, MA 01655, USA


As more microbial genome sequence information becomes available, the field of bacterial patho-genesis would benefit from the development of new genetic tools designed to facilitate gene function studies on a genomic scale. The complete DNA sequence of the bacterium Pseudomonas aeruginosa provides an opportunity to apply functional genomics to a major opportunistic human pathogen. Here, I describe the development of a new gene replacement scheme termed "SCE jumping" in P. aeruginosa. The system uses the yeast I-SceI homing endonuclease in conjunction with in vitro mariner-transposon mutagenesis to generate mutations within targeted regions of the chromosome for genetic footprinting. Use of SCE jumping for generating transposon insertion mutants is anticipated to be widely applicable to other bacterial organisms. This allelic exchange strategy is discussed in context with other methods of gene replacement strategies available in P. aeruginosa. Development of SCE jumping provides an excellent example of the power of importing systems from unrelated organisms to circumvent practical challenges in molecular genetics.

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