2024
Chaperone Hsp70 helps Salmonella survive infection-relevant stress by reducing protein synthesis
Chan C, Groisman E. Chaperone Hsp70 helps Salmonella survive infection-relevant stress by reducing protein synthesis. PLOS Biology 2024, 22: e3002560. PMID: 38574172, PMCID: PMC10994381, DOI: 10.1371/journal.pbio.3002560.Peer-Reviewed Original ResearchConceptsRibosome associationProtein synthesisProtein homeostasisS. typhimuriumProtein folding capacityPreventing protein aggregationC-terminal amino acidsDomains of lifeProtein synthesis in vitroInhibit protein synthesisFolding capacityHsp70 chaperonesJ-domainSynthesis in vitroProtein foldingReduction of protein synthesisChaperone Hsp70DnaKRibosomeProtein aggregationChaperoneAmino acidsProteinStarvationHSP70
2018
Reduction in adaptor amounts establishes degradation hierarchy among protease substrates
Yeom J, Gao X, Groisman EA. Reduction in adaptor amounts establishes degradation hierarchy among protease substrates. Proceedings Of The National Academy Of Sciences Of The United States Of America 2018, 115: e4483-e4492. PMID: 29686082, PMCID: PMC5948988, DOI: 10.1073/pnas.1722246115.Peer-Reviewed Original ResearchConceptsRegulatory protein PhoPATP-dependent proteaseCritical cellular processesExpression of genesCellular processesAntibiotic persistersCytoplasmic MgProtease substratesUvrYDifferential stabilityProteasePhoPPhysiological conditionsGenesAdaptorAbundanceUnfoldaseFtsATranscriptionSubunitsSubstrateProteolysisVirulenceProteinBinds
2015
An RNA motif advances transcription by preventing Rho-dependent termination
Sevostyanova A, Groisman EA. An RNA motif advances transcription by preventing Rho-dependent termination. Proceedings Of The National Academy Of Sciences Of The United States Of America 2015, 112: e6835-e6843. PMID: 26630006, PMCID: PMC4687561, DOI: 10.1073/pnas.1515383112.Peer-Reviewed Original ResearchConceptsRho-dependent transcription terminationTranscription terminationRNA elementsNucleic Acid Binding ProteinsRho-dependent terminationOpen reading frameRNA polymeraseReading frameBacterial RNALeader regionRNA motifsRNA conformationRho's accessInefficient translationBinding proteinInactive complexPharmacological inhibitionRhoTranscription
2007
[18] Gene Promoter Scan Methodology for Identifying and Classifying Coregulated Promoters
Zwir I, Harari O, Groisman EA. [18] Gene Promoter Scan Methodology for Identifying and Classifying Coregulated Promoters. Methods In Enzymology 2007, 422: 361-385. PMID: 17628149, PMCID: PMC3755887, DOI: 10.1016/s0076-6879(06)22018-4.Peer-Reviewed Original ResearchConceptsCoregulated promotersTwo-component regulatory systemCis-acting regulatory elementsDistinct regulatory networksSingle transcription factorPhoP/PhoQPhoP proteinGenomic approachesCoregulated genesPhoP regulonRegulatory networksRegulatory interactionsTranscription factorsRegulatory featuresGene transcriptionRegulatory elementsPostgenomic eraNovel memberDifferential expressionGenesEscherichia coliRegulatory systemSalmonella entericaPromoterMultiple mechanisms
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 TyphimuriumTranscriptional Control of the Antimicrobial Peptide Resistance ugtL Gene by the Salmonella PhoP and SlyA Regulatory Proteins*
Shi Y, Latifi T, Cromie MJ, Groisman EA. Transcriptional Control of the Antimicrobial Peptide Resistance ugtL Gene by the Salmonella PhoP and SlyA Regulatory Proteins*. Journal Of Biological Chemistry 2004, 279: 38618-38625. PMID: 15208313, DOI: 10.1074/jbc.m406149200.Peer-Reviewed Original ResearchMeSH KeywordsAntimicrobial Cationic PeptidesBacterial ProteinsBase SequenceBeta-GalactosidaseBinding SitesBlotting, SouthernDeoxyribonuclease IGene Expression Regulation, BacterialMagaininsMagnesiumMembrane ProteinsModels, BiologicalMolecular Sequence DataMutationPeptidesPlasmidsPolymyxin BPromoter Regions, GeneticProtein BindingSalmonellaSingle-Strand Specific DNA and RNA EndonucleasesTranscription FactorsTranscription, GeneticTranscriptional ActivationXenopus ProteinsConceptsPhoP proteinSlyA mutantSlyA proteinPhoP/PhoQTranscription start siteAntimicrobial peptidesTwo-component systemMagainin 2Transcriptional activatorAbility of SalmonellaTranscriptional controlStart siteMaster regulatorRegulatory proteinsTranscriptionVirulence attenuationAntimicrobial peptide magainin 2PhoPGenesProteinPromoterMutantsSlyA.PhoQPeptidesPhoP‐regulated Salmonella resistance to the antimicrobial peptides magainin 2 and polymyxin B
Shi Y, Cromie MJ, Hsu F, Turk J, Groisman EA. PhoP‐regulated Salmonella resistance to the antimicrobial peptides magainin 2 and polymyxin B. Molecular Microbiology 2004, 53: 229-241. PMID: 15225317, DOI: 10.1111/j.1365-2958.2004.04107.x.Peer-Reviewed Original Research
2003
Signal-dependent Requirement for the Co-activator Protein RcsA in Transcription of the RcsB-regulated ugd Gene*
Mouslim C, Latifi T, Groisman EA. Signal-dependent Requirement for the Co-activator Protein RcsA in Transcription of the RcsB-regulated ugd Gene*. Journal Of Biological Chemistry 2003, 278: 50588-50595. PMID: 14514676, DOI: 10.1074/jbc.m309433200.Peer-Reviewed Original ResearchMeSH KeywordsBacterial ProteinsBase SequenceBeta-GalactosidaseBinding SitesChromosomesDeoxyribonuclease IEscherichia coli ProteinsGene DeletionIronMagnesiumModels, BiologicalModels, GeneticMolecular Sequence DataMutationPeriplasmic ProteinsPlasmidsPromoter Regions, GeneticSalmonellaSequence Homology, Amino AcidSingle-Strand Specific DNA and RNA EndonucleasesTemperatureTranscription FactorsTranscription, GeneticConceptsUgd genePmrA/PmrB systemTwo-component systems PhoP/PhoQS1 mapping experimentsPhoP/PhoQPmrA/PmrBUDP-glucose dehydrogenasePhoP proteinPhosphorelay systemIndependent transcriptionVariety of signalsPmrA mutantMembrane proteinsSame promoterCps operonRcsBGene expressionRcsATranscriptionGenesMapping experimentsCps transcriptionPhoPPromoterLow Mg2Role of Nonhost Environments in the Lifestyles of Salmonella and Escherichia coli
Winfield MD, Groisman EA. Role of Nonhost Environments in the Lifestyles of Salmonella and Escherichia coli. Applied And Environmental Microbiology 2003, 69: 3687-3694. PMID: 12839733, PMCID: PMC165204, DOI: 10.1128/aem.69.7.3687-3694.2003.Peer-Reviewed Original ResearchControl of the Salmonella ugd gene by three two‐component regulatory systems
Mouslim C, Groisman EA. Control of the Salmonella ugd gene by three two‐component regulatory systems. Molecular Microbiology 2003, 47: 335-344. PMID: 12519186, DOI: 10.1046/j.1365-2958.2003.03318.x.Peer-Reviewed Original Research
2002
Conflicting needs for a Salmonella hypervirulence gene in host and non‐host environments
Mouslim C, Hilbert F, Huang H, Groisman EA. Conflicting needs for a Salmonella hypervirulence gene in host and non‐host environments. Molecular Microbiology 2002, 45: 1019-1027. PMID: 12180921, DOI: 10.1046/j.1365-2958.2002.03070.x.Peer-Reviewed Original ResearchConceptsSole carbon sourceD-Ala-D-Ala dipeptidaseNon-host environmentsNutrient-poor conditionsPathogen Salmonella entericaCarbon sourceWild-type SalmonellaPathogen fitnessFaster growth rateGenesInfected hostHypervirulence genesMutantsInnate immunitySalmonella entericaDipeptidase activityGrowth rateHostInactivationPhenotypeFitnessDipeptidasePathogensSalmonellaEntericaFe(III)‐mediated cellular toxicity
Chamnongpol S, Dodson W, Cromie MJ, Harris ZL, Groisman EA. Fe(III)‐mediated cellular toxicity. Molecular Microbiology 2002, 45: 711-719. PMID: 12139617, DOI: 10.1046/j.1365-2958.2002.03041.x.Peer-Reviewed Original ResearchConceptsIsogenic wild-type strainSignal transduction systemWild-type strainGram-negative speciesPmrA mutantOuter membraneIron-mediated toxicityTransduction systemMicrobicidal activityBacterial survivalMajor regulatorCell deathPmrA geneIron homeostasisMutantsEscherichia coliSalmonella mutantsDeleterious metalsCellular toxicitySalmonella entericaExcellent biocatalystAnaerobic conditionsGenesRegulatorSpecies
2001
The Pleiotropic Two-Component Regulatory System PhoP-PhoQ
Groisman E. The Pleiotropic Two-Component Regulatory System PhoP-PhoQ. Journal Of Bacteriology 2001, 183: 1835-1842. PMID: 11222580, PMCID: PMC95077, DOI: 10.1128/jb.183.6.1835-1842.2001.Peer-Reviewed Original Research
1997
How Salmonella became a pathogen
Groisman E, Ochman H. How Salmonella became a pathogen. Trends In Microbiology 1997, 5: 343-349. PMID: 9294889, DOI: 10.1016/s0966-842x(97)01099-8.Peer-Reviewed Original Research
1996
Distribution of pathogenicity islands in Salmonella spp
Ochman H, Groisman EA. Distribution of pathogenicity islands in Salmonella spp. Infection And Immunity 1996, 64: 5410-5412. PMID: 8945597, PMCID: PMC174539, DOI: 10.1128/iai.64.12.5410-5412.1996.Peer-Reviewed Original Research
1995
Relationship between evolutionary rate and cellular location among the Inv/Spa invasion proteins of Salmonella enterica.
Li J, Ochman H, Groisman EA, Boyd EF, Solomon F, Nelson K, Selander RK. Relationship between evolutionary rate and cellular location among the Inv/Spa invasion proteins of Salmonella enterica. Proceedings Of The National Academy Of Sciences Of The United States Of America 1995, 92: 7252-7256. PMID: 7638176, PMCID: PMC41317, DOI: 10.1073/pnas.92.16.7252.Peer-Reviewed Original ResearchConceptsEvolutionary ratesInvasion genesInvasion proteinsCellular locationSequence identityProtein export systemNonphagocytic host cellsWarm-blooded vertebratesEnteric pathogens ShigellaSalmonella entericaS. entericaEvolutionary diversificationNiche expansionExport systemExtracellular environmentHost cellsSPA complexGenesEnteric bacteriaProteinFlagellar phaseKey eventsSubspeciesHomologuesSpa gene
1994
How to become a pathogen
Groisman E, Ochman H. How to become a pathogen. Trends In Microbiology 1994, 2: 289-294. PMID: 7981972, DOI: 10.1016/0966-842x(94)90006-x.Peer-Reviewed Original ResearchMeSH KeywordsAllelesAnimalsGenes, BacterialGenes, SuppressorMiceSalmonellaSpecies SpecificityVirulence
1993
Molecular, functional, and evolutionary analysis of sequences specific to Salmonella.
Groisman EA, Sturmoski MA, Solomon FR, Lin R, Ochman H. Molecular, functional, and evolutionary analysis of sequences specific to Salmonella. Proceedings Of The National Academy Of Sciences Of The United States Of America 1993, 90: 1033-1037. PMID: 8430070, PMCID: PMC45805, DOI: 10.1073/pnas.90.3.1033.Peer-Reviewed Original ResearchConceptsAtypical base compositionIndependent evolutionary eventsPhenotypic characteristicsOpen reading frameLac gene fusionsWild-type parentLysR familyEvolutionary eventsDeletion strainEvolutionary analysisTranscriptional regulatorsReading frameSalmonella genomeNucleotide sequenceBase compositionHorizontal transferDNA fragmentsGene fusionsBacterial speciesEnteric bacteriaStructural similaritySpeciesVirulenceSequenceUnprecedented array
1990
Salmonella virulence: new clues to intramacrophage survival
Groisman E, Saier M. Salmonella virulence: new clues to intramacrophage survival. Trends In Biochemical Sciences 1990, 15: 30-33. PMID: 2180148, DOI: 10.1016/0968-0004(90)90128-x.Peer-Reviewed Original Research