2013
The Biology of the PmrA/PmrB Two-Component System: The Major Regulator of Lipopolysaccharide Modifications
Chen HD, Groisman EA. The Biology of the PmrA/PmrB Two-Component System: The Major Regulator of Lipopolysaccharide Modifications. Annual Review Of Microbiology 2013, 67: 83-112. PMID: 23799815, PMCID: PMC8381567, DOI: 10.1146/annurev-micro-092412-155751.Peer-Reviewed Original ResearchConceptsPmrA/PmrBTwo-component systemPmrA/PmrB systemMajor regulatorEnteric pathogen Salmonella entericaGene expression outputPathogen Salmonella entericaTranscriptional regulatorsExpression outputEcological nichesOuter membraneRelated bacteriaLPS modificationsExtent bacteriaLipopolysaccharide modificationDifferential survivalRegulatorHost immune systemNegative bacteriaSalmonella entericaBacteriaBiologyPmrBQuantitative differencesImmune systemThe lipopolysaccharide modification regulator PmrA limits Salmonella virulence by repressing the type three-secretion system Spi/Ssa
Choi J, Groisman EA. The lipopolysaccharide modification regulator PmrA limits Salmonella virulence by repressing the type three-secretion system Spi/Ssa. Proceedings Of The National Academy Of Sciences Of The United States Of America 2013, 110: 9499-9504. PMID: 23690578, PMCID: PMC3677452, DOI: 10.1073/pnas.1303420110.Peer-Reviewed Original ResearchConceptsPmrA proteinNull mutantsSalmonella virulenceThree secretion systemVirulence regulatory genesSalmonella enterica serovar TyphimuriumWild-type SalmonellaEnterica serovar TyphimuriumPmrA mutantRegulatory genesProtein bindsModification genesMurine typhoid feverControl expressionLPS modificationsPmrA geneMutantsGenesSerovar TyphimuriumPathogen persistenceAntimicrobial peptidesHost tissuesPromoterVirulenceProtein
2012
Reciprocal Control between a Bacterium's Regulatory System and the Modification Status of Its Lipopolysaccharide
Kato A, Chen HD, Latifi T, Groisman EA. Reciprocal Control between a Bacterium's Regulatory System and the Modification Status of Its Lipopolysaccharide. Molecular Cell 2012, 47: 897-908. PMID: 22921935, PMCID: PMC3465083, DOI: 10.1016/j.molcel.2012.07.017.Peer-Reviewed Original Research
2004
Phenotypic differences between Salmonella and Escherichia coli resulting from the disparate regulation of homologous genes
Winfield MD, Groisman EA. Phenotypic differences between Salmonella and Escherichia coli resulting from the disparate regulation of homologous genes. Proceedings Of The National Academy Of Sciences Of The United States Of America 2004, 101: 17162-17167. PMID: 15569938, PMCID: PMC534605, DOI: 10.1073/pnas.0406038101.Peer-Reviewed Original ResearchConceptsPmrD proteinPolymyxin B resistanceHomologous genesB resistancePhenotypic differencesDifferential regulationRange of nichesSpecies-specific genesPmrA/PmrBE. coliE. coli KTwo-component systemEnterica serovar TyphimuriumGene transcriptionS. enterica serovar TyphimuriumEcological consequencesColi KLPS modificationsNatural isolatesPathogenicity islandE. coli strainsGenesMolecular analysisEscherichia coliSerovar Typhimurium
1997
Regulation of polymyxin resistance and adaptation to low-Mg2+ environments
Groisman EA, Kayser J, Soncini FC. Regulation of polymyxin resistance and adaptation to low-Mg2+ environments. Journal Of Bacteriology 1997, 179: 7040-7045. PMID: 9371451, PMCID: PMC179645, DOI: 10.1128/jb.179.22.7040-7045.1997.Peer-Reviewed Original ResearchConceptsLPS modificationsAntimicrobial proteinsTranscription of PmrAPolymyxin resistanceWild-type organismsTwo-component systemExpression of pmrAAmino acid substitutionsPeptide antibiotic polymyxin BRegulatory proteinsPmrA-PmrBBacterial survivalAcid substitutionsMicromolar Mg2PmrAProteinHuman neutrophilsBacterial bindingGenesLociCationic polypeptidesAntibiotic polymyxin BOverall negative chargeSalmonella typhimuriumPhagocytic cells