Evidence for extracellular control of RpoS proteolysis in Escherichia coli.


The RpoS sigma factor is required for the transition of Escherichia coli into stationary phase, as well as adaptation to environmental stresses and nutrient depletion. In this study, we report that under nutrient poor conditions, RpoS protein accumulation in E. coli was strongly enhanced by a secreted factor. Expression of a single copy RpoS'-'LacZ… (More)
DOI: 10.1111/j.1574-6968.2008.01255.x