alexa Global regulation of gene expression in Escherichia coli.
Microbiology

Microbiology

Journal of Plant Pathology & Microbiology

Author(s): Chuang SE, Daniels DL, Blattner FR

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Abstract Global transcription responses of Escherichia coli to various stimuli or genetic defects were studied by measuring mRNA levels in about 400 segments of the genome. Measuring mRNA levels was done by analyzing hybridization to DNA dot blots made with overlapping lambda clones spanning the genome of E. coli K-12. Conditions examined included isopropyl-beta-D-thiogalactopyranoside (IPTG) induction, heat shock, osmotic shock, starvation for various nutrients, entrance of cells into the stationary phase of growth, anaerobic growth in a tube, growth in the gnotobiotic mouse gut, and effects of pleiotropic mutations rpoH, himA, topA, and crp. Most mapped genes known to be regulated by a particular situation were successfully detected. In addition, many chromosomal regions containing no previously known regulated genes were discovered that responded to various stimuli. This new method for studying globally regulated genetic systems in E. coli combines detection, cloning, and physical mapping of a battery of coregulated genes in one step.
This article was published in J Bacteriol and referenced in Journal of Plant Pathology & Microbiology

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