2025
FlgY, PflA, and PflB form a spoke–ring network in the high-torque flagellar motor of Helicobacter pylori
Tachiyama S, Rosinke K, Khan M, Zhou X, Xin Y, Botting J, Yue J, Roujeinikova A, Hoover T, Liu J. FlgY, PflA, and PflB form a spoke–ring network in the high-torque flagellar motor of Helicobacter pylori. Proceedings Of The National Academy Of Sciences Of The United States Of America 2025, 122: e2421632122. PMID: 40261933, PMCID: PMC12054838, DOI: 10.1073/pnas.2421632122.Peer-Reviewed Original ResearchConceptsMS ringAccessory proteinsStator complexWild-type <i>H. pyFlagellar motorSalmonella enterica</i>Protein-protein interactionsFlagellar motilityAlphaFold-predicted structuresFlgIBiochemical approachesPflBGastric mucus layerMolecular geneticsPFLACryoelectron tomographyUnique motilityBacterial flagellar motorMucus layerMotilityBacteriaProteinHuman stomachPseudoatomic modelHelicobacter pylori
2023
Cryo-EM reveals how the mastigoneme assembles and responds to environmental signal changes
Wang Y, Yang J, Hu F, Yang Y, Huang K, Zhang K. Cryo-EM reveals how the mastigoneme assembles and responds to environmental signal changes. Journal Of Cell Biology 2023, 222: e202301066. PMID: 37882754, PMCID: PMC10602792, DOI: 10.1083/jcb.202301066.Peer-Reviewed Original ResearchConceptsSingle-particle cryo-electron microscopy structureCryo-electron microscopy structureNon-polar filamentsImmunoglobulin-like domainsDistal regionPolyproline II helixMicroscopy structureChlamydomonas reinhardtiiFlagellar motilityVaried environmental conditionsCryo-EMCell swimmingMotility controlEnvironmental responsesDisulfide bondsEnvironmental conditionsSushi domainMastigonemesThread-like structuresRedox shiftSignal sensingPotential roleProtistsReinhardtiiMST1
2013
Flagellar Motility Is a Key Determinant of the Magnitude of the Inflammasome Response to Pseudomonas aeruginosa
Patankar YR, Lovewell RR, Poynter ME, Jyot J, Kazmierczak BI, Berwin B. Flagellar Motility Is a Key Determinant of the Magnitude of the Inflammasome Response to Pseudomonas aeruginosa. Infection And Immunity 2013, 81: 2043-2052. PMID: 23529619, PMCID: PMC3676033, DOI: 10.1128/iai.00054-13.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsApoptosis Regulatory ProteinsCARD Signaling Adaptor ProteinsCaspase 1Cell DeathCytoskeletal ProteinsDendritic CellsFlagellaGene Expression RegulationInflammasomesInterleukin-1betaMacrophages, PeritonealMiceMice, Inbred C57BLMice, KnockoutMovementPhagocytosisPseudomonas aeruginosaPseudomonas InfectionsConceptsBacterial motilityFlagellar motilityBacterial flagellar motilityInnate immune systemWild-type P. aeruginosaInflammasome activationP. aeruginosaFlagellar expressionIngest bacteriaBone marrow-derived dendritic cellsImmune systemNLRC4 inflammasome activationBacterial associationsCaspase-1 activationBacterial interactionsMarrow-derived dendritic cellsChronic Pseudomonas aeruginosa infectionIL-1β levelsCell surfacePseudomonas aeruginosa infectionIL-1β productionInflammasome responseMotilityDendritic cellsAeruginosa infection
2012
The CSC connects three major axonemal complexes involved in dynein regulation
Heuser T, Dymek EE, Lin J, Smith EF, Nicastro D. The CSC connects three major axonemal complexes involved in dynein regulation. Molecular Biology Of The Cell 2012, 23: 3143-3155. PMID: 22740634, PMCID: PMC3418309, DOI: 10.1091/mbc.e12-05-0357.Peer-Reviewed Original ResearchConceptsNexin-dynein regulatory complexDynein regulationRadial spokesAxonemal complexCryo-electron tomographyWild-type motilityRegulatory complexFlagellar motilityDynein motorsChlamydomonas flagellaMotile ciliaStable assemblyFlagellaDifferent functionsRegulationRS1ComplexesMotilityStructural heterogeneityRS2Human healthImportant roleOrganellesHomologuesCSCThe structural heterogeneity of radial spokes in cilia and flagella is conserved
Lin J, Heuser T, Carbajal‐González B, Song K, Nicastro D. The structural heterogeneity of radial spokes in cilia and flagella is conserved. Cytoskeleton 2012, 69: 88-100. PMID: 22170736, PMCID: PMC3307805, DOI: 10.1002/cm.21000.Peer-Reviewed Original ResearchConceptsFlagellar motilityRadial spokesNexin-dynein regulatory complexRegulatory complexFlagellar structureMost organismsThree-dimensional structureSubtomogram averagingCryoelectron tomographyDynein motorsDynein activityChlamydomonas flagellaMotile ciliaFlagellaSperm flagellaUbiquitous componentOrganismsFunctional differencesEssential roleCiliaRepeat unitsUnprecedented detailBasal partRS1Motility
2009
Functional correlation of bacterial LuxS with their quaternary associations: interface analysis of the structure networks
Bhattacharyya M, Vishveshwara S. Functional correlation of bacterial LuxS with their quaternary associations: interface analysis of the structure networks. BMC Molecular And Cell Biology 2009, 9: 8. PMID: 19243584, PMCID: PMC2656534, DOI: 10.1186/1472-6807-9-8.Peer-Reviewed Original ResearchConceptsProtein structure networksSequence alignment studiesQuorum sensing moleculesDesign of inhibitorsHigh structural similarityCertain structural detailsGene homologuesStructure comparison methodsFlagellar motilityLux genesHomodimeric proteinDimer interfaceDimeric interfaceAI-2Protein interfacesVariety of functionsQuaternary associationMetabolic regulationSensing moleculesFunctional roleStructure networkProkaryotesX-ray crystallographyProteinToxin production
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