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
2021
RNA chaperone activates Salmonella virulence program during infection
Choi J, Salvail H, Groisman EA. RNA chaperone activates Salmonella virulence program during infection. Nucleic Acids Research 2021, 49: 11614-11628. PMID: 34751407, PMCID: PMC8599858, DOI: 10.1093/nar/gkab992.Peer-Reviewed Original ResearchConceptsPhoP activationVirulence regulator PhoPWild-type virulenceBacterium Salmonella enterica serovar TyphimuriumWild-type S. typhimuriumSalmonella enterica serovar TyphimuriumRNA chaperonesEnterica serovar TyphimuriumRegulator PhoPRedundant proteinsMutant behavesVirulence programVirulence roleS. typhimuriumInside macrophagesSecondary structureSerovar TyphimuriumCritical functionsVirulence genesChaperonesPhoPMutantsRibosomesOrganismsCSPC
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
2012
Expression of STM4467-Encoded Arginine Deiminase Controlled by the STM4463 Regulator Contributes to Salmonella enterica Serovar Typhimurium Virulence
Choi Y, Choi J, Groisman EA, Kang DH, Shin D, Ryu S. Expression of STM4467-Encoded Arginine Deiminase Controlled by the STM4463 Regulator Contributes to Salmonella enterica Serovar Typhimurium Virulence. Infection And Immunity 2012, 80: 4291-4297. PMID: 23006851, PMCID: PMC3497419, DOI: 10.1128/iai.00880-12.Peer-Reviewed Original ResearchConceptsCarbamate kinaseOrnithine transcarbamoylaseArginine deiminaseSalmonella enterica Serovar Typhimurium VirulenceBacterium Salmonella enterica serovar TyphimuriumSalmonella enterica serovar TyphimuriumGene functionEnterica serovar TyphimuriumDeletion mutantsMammalian hostsPathway genesRegulatory proteinsADI systemSuccessful infectionTyphimurium virulenceS. typhimuriumMetabolic functionsGenesSerovar TyphimuriumADI activityMurine macrophagesVirulenceMutantsCertain pathogensExpression
2009
Short-Term Signatures of Evolutionary Change in the Salmonella enterica Serovar Typhimurium 14028 Genome
Jarvik T, Smillie C, Groisman EA, Ochman H. Short-Term Signatures of Evolutionary Change in the Salmonella enterica Serovar Typhimurium 14028 Genome. Journal Of Bacteriology 2009, 192: 560-567. PMID: 19897643, PMCID: PMC2805332, DOI: 10.1128/jb.01233-09.Peer-Reviewed Original ResearchConceptsComplete genomic sequenceGenomic sequencesSalmonella enterica serovar TyphimuriumTyphoid-like diseaseEnterica serovar TyphimuriumEvolutionary changeSequence evolutionGram-negative pathogensS. typhimuriumSerovar TyphimuriumComplete inventoryGenetic alterationsAvirulent strainsS. entericaPathogenic organismsSequenceLaboratory passageS. typhimurium strainTyphimuriumGenomeStrainsTyphimurium strainsLT2 strainOrganismsProgenitors
1997
The Genetic Basis of Microbial Resistance to Antimicrobial Peptides
Groisman E, Aspedon A. The Genetic Basis of Microbial Resistance to Antimicrobial Peptides. Methods In Molecular Biology 1997, 78: 205-215. PMID: 9276306, DOI: 10.1385/0-89603-408-9:205.Peer-Reviewed Original ResearchConceptsSmall cationic peptidesAntimicrobial peptidesPathogen Salmonella typhimuriumDivergent organismsMillions of yearsMammalian hostsCationic peptidesGenetic basisAnimal hostsHost defense peptidesDiverse arrayHost tissuesInnate immunityVirulence propertiesDefense peptidesHostChemical barrierSalmonella typhimuriumMicroorganismsMicrobial resistanceS. typhimuriumPeptidesEnteric pathogensAntibiotic propertiesOpportunistic microorganisms
1995
Regulation of Salmonella Virulence by Two‐Component Regulatory Systems
Groisman E, Heffron F. Regulation of Salmonella Virulence by Two‐Component Regulatory Systems. 1995, 319-332. DOI: 10.1128/9781555818319.ch20.Peer-Reviewed Original ResearchTwo-component systemEnvZ/OmpR systemTwo-component regulatory systemClassical bacterial geneticsIdentification of lociPhoP/PhoQCrucial virulence factorTranscription regulatory factorsOuter membrane porins OmpCTissue culture model systemTranscriptional regulationBacterial geneticsVirulence defectBacterial pathogenesisMicrobial pathogenesisEnvironmental cuesCulture model systemSalmonella virulenceMutant strainRegulatory factorsPorins OmpCS. typhimuriumRegulatory systemVirulence determinantsAdaptive response
1994
The role of the PhoP/PhoQ regulon in Salmonella virulence
Véscovi E, Soncini FC, Groisman EA. The role of the PhoP/PhoQ regulon in Salmonella virulence. Research In Microbiology 1994, 145: 473-480. PMID: 7855434, DOI: 10.1016/0923-2508(94)90096-5.Peer-Reviewed Original Research
1987
Cloning of genes from members of the family Enterobacteriaceae with mini-Mu bacteriophage containing plasmid replicons
Groisman EA, Casadaban MJ. Cloning of genes from members of the family Enterobacteriaceae with mini-Mu bacteriophage containing plasmid replicons. Journal Of Bacteriology 1987, 169: 687-693. PMID: 3542967, PMCID: PMC211834, DOI: 10.1128/jb.169.2.687-693.1987.Peer-Reviewed Original ResearchConceptsSensitive recipient strainFamily EnterobacteriaceaeHigh phage titersC. freundiiProteus mirabilisPlasmid repliconsCitrobacter freundiiS. typhimuriumDrug-resistant transductantsSpecific mutationsMu derivativesE. coliSalmonella typhimuriumEnterobacteriaceaeFreundiiRecipient strainPhage titerTyphimuriumEscherichia coli bacteriophageInfectionTiters
1986
crp genes of Shigella flexneri, Salmonella typhimurium, and Escherichia coli
Cossart P, Groisman EA, Serre MC, Casadaban MJ, Gicquel-Sanzey B. crp genes of Shigella flexneri, Salmonella typhimurium, and Escherichia coli. Journal Of Bacteriology 1986, 167: 639-646. PMID: 3525518, PMCID: PMC212937, DOI: 10.1128/jb.167.2.639-646.1986.Peer-Reviewed Original ResearchConceptsE. coli crp geneNucleotide sequenceCatabolite gene activator proteinCRP geneGene activator proteinCrp gene productCorresponding amino acid sequencesE. coli CRPComplete nucleotide sequenceAmino acid divergenceEscherichia coli KAmino acid sequenceBase pair changesAmino acid differencesSalmonella typhimurium LT2S. typhimuriumRegulatory genesCodon usageActivator proteinRegulatory regionsGene productsAcid sequenceColi KPair changesAcid differences