2024
Loss of function of metabolic traits in typhoidal Salmonella without apparent genome degradation
Machado L, Galán J. Loss of function of metabolic traits in typhoidal Salmonella without apparent genome degradation. MBio 2024, 15: e00607-24. PMID: 38572992, PMCID: PMC11077982, DOI: 10.1128/mbio.00607-24.Peer-Reviewed Original ResearchConceptsSalmonella enterica</i> serovar TyphiAdaptive convergent evolutionFunction of metabolic pathwaysAmino acid substitutionsConvergent evolutionMetabolic pathwaysParatyphi A.Paratyphi AHuman hostTranscriptional regulationAcid substitutionsMetabolic capabilitiesPoint mutationsParatyphoid feverTranscriptional regulatory proteinsMetabolic enzymesAffecting different genesPresence of point mutationsGenome degradationTyphoidal SalmonellaGlucose-6-phosphateCoding sequenceBioinformatics approachTyphiBacterial pathogens
2022
Assembly and architecture of the type III secretion sorting platform
Soto J, Galán J, Lara-Tejero M. Assembly and architecture of the type III secretion sorting platform. Proceedings Of The National Academy Of Sciences Of The United States Of America 2022, 119: e2218010119. PMID: 36512499, PMCID: PMC9907115, DOI: 10.1073/pnas.2218010119.Peer-Reviewed Original ResearchConceptsType III secretion machinesType III secretion systemTarget eukaryotic cellsType III secretionSecretion of proteinsBacterial nanomachinesSecretion machineEukaryotic cellsExport pathwayImportant bacterial pathogensSecretion systemBacterial structureAntivirulence strategiesCoordinated mechanismFunctional complexityBacterial pathogensGenetic deletionStructure modelingProtein deliveryAssemblyRational developmentCross-linking strategyAssembly processProteinDeletion
2006
Differential activation and function of Rho GTPases during Salmonella–host cell interactions
Patel JC, Galán J. Differential activation and function of Rho GTPases during Salmonella–host cell interactions. Journal Of Cell Biology 2006, 175: 453-463. PMID: 17074883, PMCID: PMC2064522, DOI: 10.1083/jcb.200605144.Peer-Reviewed Original ResearchMeSH KeywordsActinsAnimalsBacterial ProteinsCdc42 GTP-Binding ProteinCell MembraneChlorocebus aethiopsCOS CellsEnzyme ActivationGuanine Nucleotide Exchange FactorsHumansIntestinal MucosaMutationRac1 GTP-Binding ProteinRho GTP-Binding ProteinsRNA InterferenceSalmonella InfectionsSalmonella typhimuriumTransfectionConceptsRho family GTPasesExchange factorCellular responsesRho family guanosine triphosphatasesSalmonella-host cell interactionsType III secretion systemSpecific Rho family GTPasesActin cytoskeleton remodelingDifferent Rho family GTPasesSpecific cellular responsesActin remodelingGuanosine triphosphatasesRho GTPasesSecretion systemCytoskeleton remodelingBacterial proteinsGTPasesSophisticated mechanismsHost cellsDistinct rolesBacterial pathogensCell interactionsSalmonella entericaDifferential activationCentral role
2004
Structural Insights into the Assembly of the Type III Secretion Needle Complex
Marlovits TC, Kubori T, Sukhan A, Thomas DR, Galán J, Unger VM. Structural Insights into the Assembly of the Type III Secretion Needle Complex. Science 2004, 306: 1040-1042. PMID: 15528446, PMCID: PMC1459965, DOI: 10.1126/science.1102610.Peer-Reviewed Original ResearchSalmonella Modulates Vesicular Traffic by Altering Phosphoinositide Metabolism
Hernandez LD, Hueffer K, Wenk MR, Galán J. Salmonella Modulates Vesicular Traffic by Altering Phosphoinositide Metabolism. Science 2004, 304: 1805-1807. PMID: 15205533, DOI: 10.1126/science.1098188.Peer-Reviewed Original ResearchConceptsIntracellular replicative nicheType III secretion systemActin cytoskeleton rearrangementBacteria-containing vacuolesBacterial intracellular growthPhosphoinositide phosphataseInnate immune defenseSecretion systemReplicative nicheBacterial entryCytoskeleton rearrangementSpacious phagosomesHost cellsNonphagocytic cellsIntracellular growthImmune defenseSopBPhosphoinositide metabolismSignificant defectsSalmonella entericaVacuolesMembraneCellsNichePhagosomesDisruption of type III secretion in Salmonella enterica serovar Typhimurium by external guide sequences
McKinney JS, Zhang H, Kubori T, Galán J, Altman S. Disruption of type III secretion in Salmonella enterica serovar Typhimurium by external guide sequences. Nucleic Acids Research 2004, 32: 848-854. PMID: 14762212, PMCID: PMC373343, DOI: 10.1093/nar/gkh219.Peer-Reviewed Original Research
2003
A Salmonella protein causes macrophage cell death by inducing autophagy
Hernandez LD, Pypaert M, Flavell RA, Galán J. A Salmonella protein causes macrophage cell death by inducing autophagy. Journal Of Cell Biology 2003, 163: 1123-1131. PMID: 14662750, PMCID: PMC2173598, DOI: 10.1083/jcb.200309161.Peer-Reviewed Original ResearchConceptsMembrane fusion activityCell deathType III protein secretion systemFusion activityProtein secretion systemMacrophage cell deathEndoplasmic reticulum markerSalmonella-infected macrophagesSecretion systemSalmonella proteinsAutophagic vesiclesMutant formsSipBHost cellsCultured cellsMitochondriaMembrane structureSalmonella entericaProteinCausative agentMarked accumulationMacrophagesCellsAutophagosomesAutophagy
2001
Role of tyrosine kinases and the tyrosine phosphatase SptP in the interaction of Salmonella with host cells
Murli S, Watson R, Galán J. Role of tyrosine kinases and the tyrosine phosphatase SptP in the interaction of Salmonella with host cells. Cellular Microbiology 2001, 3: 795-810. PMID: 11736992, DOI: 10.1046/j.1462-5822.2001.00158.x.Peer-Reviewed Original ResearchMeSH KeywordsActinsBacterial ProteinsCdc42 GTP-Binding ProteinCell NucleusCytoskeletonInterleukin-8Mitogen-Activated Protein Kinase 1Mitogen-Activated Protein Kinase 3Mitogen-Activated Protein KinasesPhosphorylationPhosphotyrosineProtein Tyrosine PhosphatasesProtein-Tyrosine KinasesSalmonellaSalmonella typhimuriumSignal TransductionSubstrate SpecificityTransfectionTyrosineVimentinConceptsTyrosine phosphatase activityBacterial proteinsCellular responsesPhosphatase activityTyrosine kinaseHost cellsType III secretion systemIntermediate filament protein vimentinCarboxy-terminal domainRho family GTPases Cdc42Actin cytoskeleton reorganizationCellular transcription factorsMAP kinase activationInteraction of SalmonellaMembrane rufflesGAP activitySpecialized organellesGTPases Cdc42Secretion systemTranscription factorsCytoskeleton reorganizationKinase activationProtein vimentinBacterial uptakeProteinMaintenance of an unfolded polypeptide by a cognate chaperone in bacterial type III secretion
Stebbins C, Galán J. Maintenance of an unfolded polypeptide by a cognate chaperone in bacterial type III secretion. Nature 2001, 414: 77-81. PMID: 11689946, DOI: 10.1038/35102073.Peer-Reviewed Original ResearchConceptsEffector proteinsSecretion systemType III protein secretion systemBacterial type III secretionSpecific cytosolic chaperonesSuch effector proteinsType III secretion systemSecretion-competent stateVirulence effector proteinsProtein secretion systemChaperone-binding domainHost cell cytosolType III secretionType III apparatusCytosolic chaperonesUnfolded polypeptidesSecretion machineryCognate chaperoneÅ resolutionChaperonesCell cytosolChaperone moleculesEffective translocationBacterial pathogensHydrophobic interfaceSalmonella entry into host cells: the work in concert of type III secreted effector proteins
Zhou D, Galán J. Salmonella entry into host cells: the work in concert of type III secreted effector proteins. Microbes And Infection 2001, 3: 1293-1298. PMID: 11755417, DOI: 10.1016/s1286-4579(01)01489-7.Peer-Reviewed Original ResearchConceptsActin cytoskeleton rearrangementCytoskeleton rearrangementActin dynamicsHost cellsHost actin dynamicsHost signal transductionType III secretion systemActin-binding proteinsSPI-1 type III secretion systemEffector proteinsSecretion systemSignal transductionActin rearrangementBacterial proteinsSalmonella entryIntestinal epithelial cellsBacterial uptakeCdc42Coordinated stepsProteinEpithelial cellsRacRearrangementCellsTransductionSALMONELLA INTERACTIONS WITH HOST CELLS: Type III Secretion at Work
Galán J. SALMONELLA INTERACTIONS WITH HOST CELLS: Type III Secretion at Work. Annual Review Of Cell And Developmental Biology 2001, 17: 53-86. PMID: 11687484, DOI: 10.1146/annurev.cellbio.17.1.53.Peer-Reviewed Original ResearchConceptsBacterial proteinsBacterial pathogen Salmonella entericaHost cellsType III secretion systemActin cytoskeleton dynamicsType III secretionHost cell functionsPathogen Salmonella entericaMolecular tinkeringConvergent evolutionEndocytic traffickingCytoskeleton dynamicsSpecialized organellesCellular functionsSecretion systemMicrobial pathogenesisRemarkable pathogenHost proteinsSalmonella interactionsVertebrate hostsProteinRemarkable arrayCoordinated actionCell functionSalmonella entericaStructural mimicry in bacterial virulence
Stebbins C, Galán J. Structural mimicry in bacterial virulence. Nature 2001, 412: 701-705. PMID: 11507631, DOI: 10.1038/35089000.Peer-Reviewed Original ResearchConceptsAmino acid sequence similarityConvergent evolutionCellular functionsSequence similarityDirect homologuesBacterial virulenceHost proteinsNew effectorsMicrobial pathogensFunctional mimicryStructural mimicryMolecular levelVirulence factorsMimicryStructural studiesHost factorsImportant mechanismHost activityHomologuesVirulenceEffectorsProteinPathogensSimilarityCommon and Contrasting Themes of Plant and Animal Diseases
Staskawicz B, Mudgett M, Dangl J, Galan J. Common and Contrasting Themes of Plant and Animal Diseases. Science 2001, 292: 2285-2289. PMID: 11423652, DOI: 10.1126/science.1062013.Peer-Reviewed Original ResearchConceptsHost-pathogen interactionsStudy of plantsDefense signalingHost defense responsesAnimal diseasesDefense responsesEffector proteinsAnimal pathogenesisBacterial pathogenesisPathogen virulencePathogen recognitionMolecular eventsHost resistancePlantsRecent studiesBacterial colonizationSignalingVirulenceProteinColonizationHostMechanismFuture studiesPathogenesisGenetic Analysis of Assembly of theSalmonella enterica Serovar Typhimurium Type III Secretion-Associated Needle Complex
Sukhan A, Kubori T, Wilson J, Galán J. Genetic Analysis of Assembly of theSalmonella enterica Serovar Typhimurium Type III Secretion-Associated Needle Complex. Journal Of Bacteriology 2001, 183: 1159-1167. PMID: 11157927, PMCID: PMC94988, DOI: 10.1128/jb.183.4.1159-1167.2001.Peer-Reviewed Original ResearchA Salmonella inositol polyphosphatase acts in conjunction with other bacterial effectors to promote host cell actin cytoskeleton rearrangements and bacterial internalization
Zhou D, Chen L, Hernandez L, Shears S, Galán J. A Salmonella inositol polyphosphatase acts in conjunction with other bacterial effectors to promote host cell actin cytoskeleton rearrangements and bacterial internalization. Molecular Microbiology 2001, 39: 248-260. PMID: 11136447, DOI: 10.1046/j.1365-2958.2001.02230.x.Peer-Reviewed Original ResearchMeSH KeywordsActinsAnimalsBacterial ProteinsCdc42 GTP-Binding ProteinCell MembraneCells, CulturedChlorocebus aethiopsCOS CellsCytoskeletonHumansInositol PhosphatesIntestinesJNK Mitogen-Activated Protein KinasesMAP Kinase Kinase 4Mitogen-Activated Protein Kinase KinasesPhosphoric Monoester HydrolasesPhosphorylationSalmonella InfectionsSalmonella typhimuriumTransfectionConceptsActin cytoskeleton rearrangementCytoskeleton rearrangementBacterial entrySecretion systemBacterial internalizationCellular responsesHost cellsRho GTPases signalingProtein secretion systemHost cell actin cytoskeleton rearrangementsHost cellular functionsSpecialized protein secretion systemCdc42-dependent mannerNon-phagocytic cellsBacterial effectorsAbility of SalmonellaInositol phosphataseCellular functionsDefective mutantsBacterial proteinsCo-ordinated functionSalmonella pathogenicityBacterium's abilitySopBPhospholipase C.
2000
Modulation of Host Signaling by a Bacterial Mimic Structure of the Salmonella Effector SptP Bound to Rac1
Stebbins C, Galán J. Modulation of Host Signaling by a Bacterial Mimic Structure of the Salmonella Effector SptP Bound to Rac1. Molecular Cell 2000, 6: 1449-1460. PMID: 11163217, DOI: 10.1016/s1097-2765(00)00141-6.Peer-Reviewed Original ResearchMeSH KeywordsAluminum CompoundsAmino Acid SequenceAmino Acid SubstitutionBacterial ProteinsBinding SitesCdc42 GTP-Binding ProteinCrystallography, X-RayDimerizationEvolution, MolecularFluoridesGTPase-Activating ProteinsGuanosine DiphosphateMacromolecular SubstancesModels, MolecularMolecular Sequence DataMutationProtein BindingProtein Structure, SecondaryProtein Structure, TertiaryProtein Tyrosine PhosphatasesRac1 GTP-Binding ProteinRecombinant Fusion ProteinsSalmonella typhimuriumSequence AlignmentSignal TransductionAlternative Strategies for Becoming an Insider Lessons from the Bacterial World
Galán J. Alternative Strategies for Becoming an Insider Lessons from the Bacterial World. Cell 2000, 103: 363-366. PMID: 11081622, DOI: 10.1016/s0092-8674(00)00127-6.Peer-Reviewed Original ResearchBiophysical characterization of SipA, an actin‐binding protein from Salmonella enterica
Mitra K, Zhou D, Galán J. Biophysical characterization of SipA, an actin‐binding protein from Salmonella enterica. FEBS Letters 2000, 482: 81-84. PMID: 11018527, DOI: 10.1016/s0014-5793(00)02040-8.Peer-Reviewed Original ResearchConceptsActin dynamicsCoiled-coil domainF-actin stabilityActin-binding proteinsActin cytoskeleton reorganizationNon-phagocytic cellsBacterial entryCytoskeleton reorganizationAdjacent actin monomersC-terminal fragmentBiophysical characterizationF-actinCellular responsesHost cellsBacterial uptakeActin monomersProteinSalmonella entericaHelical conformationSalmonella enterica infectionsIntestinal epitheliumEnterica infectionsEssential stepSIPACellsMolecular characterization and assembly of the needle complex of the Salmonella typhimurium type III protein secretion system
Kubori T, Sukhan A, Aizawa S, Galán J. Molecular characterization and assembly of the needle complex of the Salmonella typhimurium type III protein secretion system. Proceedings Of The National Academy Of Sciences Of The United States Of America 2000, 97: 10225-10230. PMID: 10944190, PMCID: PMC27824, DOI: 10.1073/pnas.170128997.Peer-Reviewed Original ResearchConceptsType III secretion systemProtein secretion systemSecretion systemNeedle complexType III protein secretion systemHost cellular functionsSpecialized protein secretion systemType III secretion export apparatusType III secretionPathogenicity island 1Secretion complexPathogen's benefitExport apparatusCellular functionsAnimal cellsNeedle-like projectionsBacterial proteinsBacterium's abilityNeedle substructureIsland 1Host cellsMolecular characterizationNonphagocytic cellsNeedle componentBacterial pathogensDevelopmental Control of Endocytosis in Dendritic Cells by Cdc42
Garrett W, Chen L, Kroschewski R, Ebersold M, Turley S, Trombetta S, Galán J, Mellman I. Developmental Control of Endocytosis in Dendritic Cells by Cdc42. Cell 2000, 102: 325-334. PMID: 10975523, DOI: 10.1016/s0092-8674(00)00038-6.Peer-Reviewed Original Research