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
2015
Salmonella promotes virulence by repressing cellulose production
Pontes MH, Lee EJ, Choi J, Groisman EA. Salmonella promotes virulence by repressing cellulose production. Proceedings Of The National Academy Of Sciences Of The United States Of America 2015, 112: 5183-5188. PMID: 25848006, PMCID: PMC4413311, DOI: 10.1073/pnas.1500989112.Peer-Reviewed Original ResearchConceptsCellulose synthesisWild-type phenotypeWild-type virulenceSalmonella enterica serovar TyphimuriumCyclic diguanylateEnterica serovar TyphimuriumPathogen fitnessAbundant organic polymerMgtC geneAcute virulenceAllosteric activatorAbiotic surfacesMgtC mutantInside macrophagesMutantsVirulence determinantsSerovar TyphimuriumVirulenceCellulose productionEnvironmental insultsCellulose levelsBCSAAttenuated mutantsTraitsDiguanylate
2013
The 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