PMID:15251200

Citation	Checroun, C and Gutierrez, C (2004) Sigma(s)-dependent regulation of yehZYXW, which encodes a putative osmoprotectant ABC transporter of Escherichia coli. FEMS Microbiol. Lett. 236:221-6
Abstract	The Escherichia coli yehZYXW operon encodes a putative osmoprotectant uptake system of the ABC transporter family. yehZ is identical to osmF, an osmotically inducible gene identified previously. Construction and analysis of a yehZ-lacZ transcriptional fusion demonstrated that yehZ is inducible not only by osmolarity, but also upon entry into stationary phase. The osmotic and growth-phase regulations operate at a unique promoter, yehZp, and are totally dependent on the stress specific sigma factor sigma(s). The yehZYXW encoded ABC transporter appears as an additional element of the global stress response controlled by sigma(s).
Links	PubMed Online version:10.1016/j.femsle.2004.05.046
Keywords	ATP-Binding Cassette Transporters/chemistry; ATP-Binding Cassette Transporters/genetics; ATP-Binding Cassette Transporters/metabolism; Adaptation, Physiological; Amino Acid Sequence; Artificial Gene Fusion; Bacterial Proteins/metabolism; Base Sequence; Escherichia coli/genetics; Escherichia coli/metabolism; Escherichia coli Proteins/genetics; Escherichia coli Proteins/metabolism; Gene Expression Regulation, Bacterial; Gene Order; Genes, Bacterial; Genes, Reporter; Molecular Sequence Data; Operon; Osmolar Concentration; Promoter Regions, Genetic; Sigma Factor/metabolism; Transcription Initiation Site; beta-Galactosidase/genetics; beta-Galactosidase/metabolism
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