2022
A Tripartite Efflux System Affects Flagellum Stability in Helicobacter pylori
Gibson K, Chu JK, Zhu S, Nguyen D, Mrázek J, Liu J, Hoover TR. A Tripartite Efflux System Affects Flagellum Stability in Helicobacter pylori. International Journal Of Molecular Sciences 2022, 23: 11609. PMID: 36232924, PMCID: PMC9570263, DOI: 10.3390/ijms231911609.Peer-Reviewed Original ResearchMeSH KeywordsATP-Binding Cassette TransportersBacterial ProteinsFlagellaHelicobacter pyloriMembrane Fusion ProteinsMembrane ProteinsConceptsTripartite efflux systemEfflux systemPeriplasmic membrane fusion proteinOuter membrane efflux proteinCryo-electron tomography studiesMembrane efflux proteinMembrane fusion proteinNumber of flagellaTransmembrane domainABC transportersUnsheathed flagellaSwimming motilityCandidate proteinsFusion proteinEfflux proteinsSame frameshift mutationFlagellaEnhanced motilityMutantsFlagellar sheathFrameshift mutationProteinIndependent variantsHomologP ringFliL ring enhances the function of periplasmic flagella
Guo S, Xu H, Chang Y, Motaleb MA, Liu J. FliL ring enhances the function of periplasmic flagella. Proceedings Of The National Academy Of Sciences Of The United States Of America 2022, 119: e2117245119. PMID: 35254893, PMCID: PMC8931381, DOI: 10.1073/pnas.2117245119.Peer-Reviewed Original ResearchConceptsFlagellar motorBacterial motilityCryo-electron tomographyStator complexFlagellar proteinsMutant cellsPeriplasmic flagellaActive conformationSitu structureFascinating questionsSupramolecular complexesMotilityComplexesMotBOptimal functionFliLFlagellaIon fluxProteinFunctionAssemblyRemodelingCellsConformationBorrelia
2019
Loss of a Cardiolipin Synthase in Helicobacter pylori G27 Blocks Flagellum Assembly
Chu JK, Zhu S, Herrera CM, Henderson JC, Liu J, Trent MS, Hoover TR. Loss of a Cardiolipin Synthase in Helicobacter pylori G27 Blocks Flagellum Assembly. Journal Of Bacteriology 2019, 201: 10.1128/jb.00372-19. PMID: 31427391, PMCID: PMC6779456, DOI: 10.1128/jb.00372-19.Peer-Reviewed Original ResearchConceptsFlagellum assemblyFlagellum biosynthesisCardiolipin synthaseFlagellar protein export apparatusCardiolipin levelsProtein export apparatusCryo-electron tomographyWild-type levelsAllelic exchange mutagenesisMS ringFlagellar genesExport apparatusCell polesP ringHost colonizationMature flagellumCell envelopeGenomic DNAMutantsProximal rodFlagellaBiosynthesisSequencing analysisFlgIBacterial pathogensRole of SpaO in the assembly of the sorting platform of a Salmonella type III secretion system
Lara-Tejero M, Qin Z, Hu B, Butan C, Liu J, Galán JE. Role of SpaO in the assembly of the sorting platform of a Salmonella type III secretion system. PLOS Pathogens 2019, 15: e1007565. PMID: 30668610, PMCID: PMC6358110, DOI: 10.1371/journal.ppat.1007565.Peer-Reviewed Original Research