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From acids to osmZ: multiple factors influence synthesis of the OmpF and OmpC porins in Escherichia coli
In Escherichia coli, levels of the two major outer membrane porin proteins, OmpF and OmpC, are regulated in response to a variety of environmental parameters, and numerous factors have been shown toExpand
Molecular determinants of a symbiotic chronic infection.
Rhizobial bacteria colonize legume roots for the purpose of biological nitrogen fixation. A complex series of events, coordinated by host and bacterial signal molecules, underlie the development ofExpand
The LysR homolog LrhA promotes RpoS degradation by modulating activity of the response regulator sprE.
Synthesis of the OmpF porin of Escherichia coli is regulated in response to environmental and growth phase signals. In order to identify constituents of the various regulatory pathways involved inExpand
CbrA is a stationary-phase regulator of cell surface physiology and legume symbiosis in Sinorhizobium meliloti.
Sinorhizobium meliloti produces an exopolysaccharide called succinoglycan that plays a critical role in promoting symbiosis with its host legume, alfalfa (Medicago sativa). We performed a transposonExpand
The symbiosis regulator CbrA modulates a complex regulatory network affecting the flagellar apparatus and cell envelope proteins.
Sinorhizobium meliloti participates in a nitrogen-fixing symbiosis with legume plant host species of the genera Medicago, Melilotus, and Trigonella. We recently identified an S. melilotiExpand
The Sinorhizobium meliloti sensor histidine kinase CbrA contributes to free-living cell cycle regulation.
Sinorhizobium meliloti is alternately capable of colonizing the soil as a free-living bacterium or establishing a chronic intracellular infection with its legume host for the purpose of nitrogenExpand
Sinorhizobium meliloti CtrA Stability Is Regulated in a CbrA-Dependent Manner That Is Influenced by CpdR1.
UNLABELLED CbrA is a DivJ/PleC-like histidine kinase of DivK that is required for cell cycle progression and symbiosis in the alphaproteobacterium Sinorhizobium meliloti. Loss of cbrA results inExpand
SprE levels are growth phase regulated in a sigma(S)-dependent manner at the level of translation.
SprE regulates sigma(S) levels in response to nutrient availability by promoting ClpXP-mediated degradation. Paradoxically, we observe that SprE is similarly regulated, accumulating preferentiallyExpand
Analysis of Taca Overexpression on Phenotypic Characteristics of Sinorhizobium meliloti
The zic1 gene plays an important role in embryonic development, in part by regulating the expression of many other genes including the engrailed gene. Previous investigators have reported thatExpand