ABSTRACT The PhoP/PhoQ two-component system controls the extracellular magnesium
deprivation response in Salmonella enterica. In addition, several virulence-associated …

PhoP is a response regulator of the PhoQ‐PhoP two‐component system controlling a set of
the Mg (II)‐response genes in Escherichia coli. Here we demonstrate the mode of …

We identified Mg2+-responsive promoters of the phoPQ, mgtA, and mgrB genes of
Escherichia coli K-12 by S1 nuclease analysis. Expression of these genes was induced by …

Related organisms typically rely on orthologous regulatory proteins to respond to a given
signal. However, the extent to which (or even if) the targets of shared regulatory proteins are …

Low Mg 2+ promotes phosphorylation of the response regulators PhoP and PmrA and
transcription of their activated genes in Salmonella enterica. Using chromatin …

The adaptation of Pseudomonas aeruginosa to its environment, including the host, is tightly
controlled by its network of regulatory systems. The two-component regulatory system …

Constitutive overexpression of the active efflux system MexXY/OprM is a major cause of
resistance to aminoglycosides, fluoroquinolones, and cefepime in clinical strains of …

Pseudomonas aeruginosa is an important opportunistic pathogen that causes infections that
can be extremely difficult to treat due to its high intrinsic antibiotic resistance and broad …

Polymyxin B and E (colistin) are the last resorts to treat multidrug-resistant Gram-negative
pathogens. Pseudomonas aeruginosa is intrinsically resistant to a variety of antibiotics. The …

Redox-cycling compounds, including endogenously produced phenazine antibiotics, induce
expression of the efflux pump MexGHI-OpmD in the opportunistic pathogen Pseudomonas …