Journal
FEMS MICROBIOLOGY REVIEWS
Volume 34, Issue 5, Pages 779-796Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1574-6976.2010.00226.x
Keywords
allostery; transcription initiation; RNA polymerase; solubility; fluorescence; homology; fucose
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This review covers the physiological aspects of regulation of the arabinose operon in Escherichia coli and the physical and regulatory properties of the operon's controlling gene, araC. It also describes the light switch mechanism as an explanation for many of the protein's properties. Although many thousands of homologs of AraC exist and regulate many diverse operons in response to many different inducers or physiological states, homologs that regulate arabinose-catabolizing genes in response to arabinose were identified. The sequence similarities among them are discussed in light of the known structure of the dimerization and DNA-binding domains of AraC.
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