title: Regulation of bacterial heat shock stimulons.
abstract: All organisms developed genetic programs to allow their survival under stressful conditions. In most cases, they increase the amount of a specific class of proteins which deal with the stress factor and allow cells to adapt to life-threatening conditions. One class of stress proteins are the heat shock proteins (HSPs) the amount of which is significantly increased after a sudden temperature rise. How is the heat shock response (HSR) regulated in bacteria? This has been studied in detail in Escherichia coli, Bacillus subtilis and Streptomyces spp. Two major mechanisms have been described so far to regulate expression of the HSGs, namely alternative sigma factors and transcriptional repressors. This review focuses on the regulatory details of the different heat shock regulons in the three well-studied bacterial species.
authors: Institute of Genetics, University of Bayreuth, 95440, Bayreuth, Germany. wschumann@uni-bayreuth.de.
authors: Wolfgang
authors: W
authors: Schumann
mesh_terms: D001412:Bacillus subtilis / Q000235:genetics / Q000378:metabolism; D001419:Bacteria / Q000235:genetics / Q000378:metabolism*; D001426:Bacterial Proteins / Q000378:metabolism*; D004926:Escherichia coli / Q000235:genetics / Q000378:metabolism; D006360:Heat-Shock Proteins / Q000378:metabolism*; D018869:Heat-Shock Response; D018085:Regulon / Q000235:genetics; D012097:Repressor Proteins / Q000378:metabolism; D012808:Sigma Factor / Q000378:metabolism; D013302:Streptomyces / Q000235:genetics / Q000378:metabolism
chemical_list: D001426:Bacterial Proteins; D006360:Heat-Shock Proteins; D012097:Repressor Proteins; D012808:Sigma Factor
keywords: Chaperones; Regulon; Repressor; Sigma factor