2021
Reduced ATP-dependent proteolysis of functional proteins during nutrient limitation speeds the return of microbes to a growth state
Yeom J, Groisman EA. Reduced ATP-dependent proteolysis of functional proteins during nutrient limitation speeds the return of microbes to a growth state. Science Signaling 2021, 14 PMID: 33500334, PMCID: PMC8378506, DOI: 10.1126/scisignal.abc4235.Peer-Reviewed Original ResearchConceptsATP-dependent proteolysisSlow-growth stateFunctional proteinsGrowth stateATP-dependent proteaseTranscriptional regulator PhoPProtein preservationNutrient limitation conditionsRapid growth statesRegulator PhoPMicrobial strategiesNonfunctional proteinNutrient limitationProtein degradationNitrogen conditionsSame proteaseMagnesium starvationSerovar TyphimuriumProteinLimitation conditionsProteolysisIntracellular ATPParticular nutrientsStationary phaseIntracellular concentration
2020
A Physiological Basis for Nonheritable Antibiotic Resistance
Pontes MH, Groisman EA. A Physiological Basis for Nonheritable Antibiotic Resistance. MBio 2020, 11: 10.1128/mbio.00817-20. PMID: 32546621, PMCID: PMC7298711, DOI: 10.1128/mbio.00817-20.Peer-Reviewed Original ResearchConceptsNonheritable resistanceAntibiotic toleranceCore cellular processesAcquisition of genesToxin-antitoxin modulesExpression of genesSlow bacterial growthActivity of toxinsAbility of bacteriaBacterial genomesCellular processesNutrient limitationBacterial growthGuanosine tetraphosphateGenetic changesBacterial populationsFeedback inhibitionPhysiological basisGenesOrganismsSmall subpopulationBacteriostatic antibioticsAntibiotic resistanceGenomeTolerance