2020
Horizontally acquired regulatory gene activates ancestral regulatory system to promote Salmonella virulence
Choi J, Groisman EA. Horizontally acquired regulatory gene activates ancestral regulatory system to promote Salmonella virulence. Nucleic Acids Research 2020, 48: 10832-10847. PMID: 33045730, PMCID: PMC7641745, DOI: 10.1093/nar/gkaa813.Peer-Reviewed Original ResearchConceptsPhoP/PhoQAncestral regulatorNucleoid structuring protein H-NSProtein H-NSS. bongoriSalmonella enterica serovar TyphimuriumAncestral genomesH-NSTarget promotersEnterica serovar TyphimuriumRegulatory genesBacterial virulenceSalmonella virulencePromoter regionSsrBOpposite regulationGenesS. typhimuriumPhoQRegulatory systemSerovar TyphimuriumVirulenceTranscriptionPromoterRegulator
2017
Activation of master virulence regulator PhoP in acidic pH requires the Salmonella-specific protein UgtL
Choi J, Groisman EA. Activation of master virulence regulator PhoP in acidic pH requires the Salmonella-specific protein UgtL. Science Signaling 2017, 10 PMID: 28851823, PMCID: PMC5966036, DOI: 10.1126/scisignal.aan6284.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAntimicrobial Cationic PeptidesBacterial ProteinsDisease Models, AnimalFemaleGene Expression Regulation, BacterialHydrogen-Ion ConcentrationMagnesiumMembrane ProteinsMiceMice, Inbred BALB CPeptidesPhosphorylationSalmonella InfectionsSalmonella typhimuriumSignal TransductionVirulenceConceptsPhoP activation
2016
Acidic pH sensing in the bacterial cytoplasm is required for Salmonella virulence
Choi J, Groisman EA. Acidic pH sensing in the bacterial cytoplasm is required for Salmonella virulence. Molecular Microbiology 2016, 101: 1024-1038. PMID: 27282333, PMCID: PMC5015592, DOI: 10.1111/mmi.13439.Peer-Reviewed Original Research
2004
Activation of the RcsC/YojN/RcsB phosphorelay system attenuates Salmonella virulence
Mouslim C, Delgado M, Groisman EA. Activation of the RcsC/YojN/RcsB phosphorelay system attenuates Salmonella virulence. Molecular Microbiology 2004, 54: 386-395. PMID: 15469511, DOI: 10.1111/j.1365-2958.2004.04293.x.Peer-Reviewed Original ResearchConceptsConstitutive mutantsSalmonella virulenceNon-phagocytic cellsPhosphorelay systemWild-type SalmonellaExpression of productsVirulence functionsFull virulenceSensor geneCps operonRcsBConstitutive activationSuccessful infectionVirulence attenuationGenesVirulence factorsAberrant expressionBacterial pathogensVirulenceMutantsHost tissuesExpressionLocation-dependent mannerMutationsAttenuation phenotype
2000
A parallel intraphagosomal survival strategy shared by Mycobacterium tuberculosis and Salmonella enterica
Buchmeier N, Blanc‐Potard A, Ehrt S, Piddington D, Riley L, Groisman E. A parallel intraphagosomal survival strategy shared by Mycobacterium tuberculosis and Salmonella enterica. Molecular Microbiology 2000, 35: 1375-1382. PMID: 10760138, DOI: 10.1046/j.1365-2958.2000.01797.x.Peer-Reviewed Original ResearchConceptsM. tuberculosisIntracellular pathogensMycobacterium tuberculosisSpleens of miceCultured human macrophagesM. tuberculosis mutantsMgtC mutantMacrophage phagosomesTuberculosisSalmonella entericaHuman macrophagesTuberculosis mutantsMacrophagesDifferent diseasesLow magnesiumVirulencePhagosomesMgtC proteinSimilar phenotypeSalmonellaPrevious studiesPathogensLungSpleen
1999
A Periplasmicd-Alanyl-d-Alanine Dipeptidase in the Gram-Negative Bacterium Salmonella enterica
Hilbert F, del Portillo F, Groisman E. A Periplasmicd-Alanyl-d-Alanine Dipeptidase in the Gram-Negative Bacterium Salmonella enterica. Journal Of Bacteriology 1999, 181: 2158-2165. PMID: 10094694, PMCID: PMC93629, DOI: 10.1128/jb.181.7.2158-2165.1999.Peer-Reviewed Original ResearchConceptsD-alanyl-D-alanine dipeptidaseD-Ala-D-Ala dipeptidaseHorizontal gene transferRelated bacterial speciesSpecies Salmonella entericaEscherichia coli KSimilar substrate specificityBacterium Salmonella entericaSalmonella entericaDipeptidase geneWild-type SalmonellaPeptidoglycan metabolismSole carbon sourcePeriplasmic spaceSalmonella chromosomeSubstrate specificityD-AlaColi KBacterial speciesSalmonella enzymeVanX proteinGene transferEnzymatic activityGlycopeptide antibiotic vancomycinCarbon source
1998
At Least Four Percent of the Salmonella typhimurium Genome Is Required for Fatal Infection of Mice
Bowe F, Lipps C, Tsolis R, Groisman E, Heffron F, Kusters J. At Least Four Percent of the Salmonella typhimurium Genome Is Required for Fatal Infection of Mice. Infection And Immunity 1998, 66: 3372-3377. PMID: 9632607, PMCID: PMC108354, DOI: 10.1128/iai.66.7.3372-3377.1998.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsDNA Transposable ElementsFemaleGenome, BacterialMiceMice, Inbred BALB CMutationSalmonella Infections, AnimalSalmonella typhimuriumVirulence
1997
The Salmonella selC locus contains a pathogenicity island mediating intramacrophage survival
Blanc‐Potard A, Groisman E. The Salmonella selC locus contains a pathogenicity island mediating intramacrophage survival. The EMBO Journal 1997, 16: 5376-5385. PMID: 9311997, PMCID: PMC1170169, DOI: 10.1093/emboj/16.17.5376.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphatasesAnimalsBacterial ProteinsBase SequenceCarrier ProteinsCation Transport ProteinsCulture MediaEscherichia coliEscherichia coli ProteinsFemaleGenes, BacterialMacrophagesMagnesiumMembrane Transport ProteinsMiceMice, Inbred BALB CMolecular Sequence DataMultigene FamilyMutationOperonPhenotypeRecombination, GeneticRNA, TransferSalmonella Infections, AnimalSalmonella typhimuriumConceptsPathogenicity islandSelC locusIntramacrophage survivalSalmonella typhimurium chromosomePhoP/PhoQKb DNA segmentVirulence genesNon-pathogenic bacterial speciesTwo-component systemSite of integrationChromosomal clustersTRNA locusVirulence functionsDNA segmentsSalmonella virulenceHomologous regionsMajor regulatorBacterial speciesLociEnteric bacteriaEscherichia coliGenesBenign strainsLow Mg2Virulence
1989
A Salmonella Locus that Controls Resistance to Microbicidal Proteins from Phagocytic Cells
Fields P, Groisman E, Heffron F. A Salmonella Locus that Controls Resistance to Microbicidal Proteins from Phagocytic Cells. Science 1989, 243: 1059-1062. PMID: 2646710, DOI: 10.1126/science.2646710.Peer-Reviewed Original ResearchConceptsIntracellular pathogen Salmonella typhimuriumPhagocytic cellsImportant health problemProfessional phagocytic cellsFacultative intracellular pathogenPrimary defense mechanismHealth problemsMicrobicidal mechanismsPathogen Salmonella typhimuriumIntracellular survivalIntracellular pathogensMicrobicidal proteinsDefense mechanismsSalmonella typhimuriumCells