2022
Degradation of gene silencer is essential for expression of foreign genes and bacterial colonization of the mammalian gut
Choi J, Schmukler M, Groisman EA. Degradation of gene silencer is essential for expression of foreign genes and bacterial colonization of the mammalian gut. Proceedings Of The National Academy Of Sciences Of The United States Of America 2022, 119: e2210239119. PMID: 36161931, PMCID: PMC9546599, DOI: 10.1073/pnas.2210239119.Peer-Reviewed Original ResearchConceptsH-NSForeign genesHeat-stable nucleoid-structuring (H-NS) proteinWild-type H-NSNucleoid-associated proteinsH-NS proteinsNucleoid structuring proteinHorizontal gene transferBacterial evolutionLon proteaseSilences expressionCorresponding genesForeign DNAMammalian gutMammalian hostsStructuring proteinGene silencersGenesMurine gutEnteric bacteriaGene transferBiofilm formationProteinGeneral mechanismColonization
2020
Salmonella expresses foreign genes during infection by degrading their silencer
Choi J, Groisman EA. Salmonella expresses foreign genes during infection by degrading their silencer. Proceedings Of The National Academy Of Sciences Of The United States Of America 2020, 117: 8074-8082. PMID: 32209674, PMCID: PMC7149492, DOI: 10.1073/pnas.1912808117.Peer-Reviewed Original ResearchConceptsForeign genesH-NSForeign DNAHeat-stable nucleoid-structuring (H-NS) proteinH-NS bindingNucleoid structuring proteinGram-negative bacterial speciesFacultative intracellular pathogenPhoP proteinLon proteaseProtease LonRegulatory sequencesVirulence regulatorGene silencingIntramacrophage survivalStructuring proteinBacterial speciesGenesInside macrophagesIntracellular pathogensSerovar TyphimuriumUncovered mechanismProteinVirulence genesDNA
2008
Overcoming H-NS-mediated Transcriptional Silencing of Horizontally Acquired Genes by the PhoP and SlyA Proteins in Salmonella enterica *
Perez JC, Latifi T, Groisman EA. Overcoming H-NS-mediated Transcriptional Silencing of Horizontally Acquired Genes by the PhoP and SlyA Proteins in Salmonella enterica *. Journal Of Biological Chemistry 2008, 283: 10773-10783. PMID: 18270203, PMCID: PMC2447644, DOI: 10.1074/jbc.m709843200.Peer-Reviewed Original ResearchConceptsHistone-like nucleoid structuring proteinPagC geneSlyA proteinRNA polymeraseRNA polymerase recruitmentH-NS repressionNucleoid structuring proteinHorizontal gene transferDifferent regulatory proteinsSalmonella entericaPolymerase recruitmentTranscriptional silencingNew traitsForeign DNAGene transcriptionRegulatory proteinsUgtLRespective promotersTranscriptionPhoPRecipient organismGenesPagC promoterGene transferProtein