2022
FliL 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
2020
FlhF regulates the number and configuration of periplasmic flagella in Borrelia burgdorferi
Zhang K, He J, Catalano C, Guo Y, Liu J, Li C. FlhF regulates the number and configuration of periplasmic flagella in Borrelia burgdorferi. Molecular Microbiology 2020, 113: 1122-1139. PMID: 32039533, PMCID: PMC8085991, DOI: 10.1111/mmi.14482.Peer-Reviewed Original ResearchConceptsPeriplasmic flagellaCell polesM-ring proteinLyme disease bacterium Borrelia burgdorferiCryo-electron tomography studiesSignal recognition particlePolar localizationB. burgdorferiFlagellar assemblyRecognition particleMutant cellsFlagellar numberProtein stabilityFlagellar patternBorrelia burgdorferiFlhFEnzymatic activityBiochemical analysisMechanistic insightsBacterium Borrelia burgdorferiFlagellaPF numberBacteriaMidcellDetailed characterization
2019
Analysis of a flagellar filament cap mutant reveals that HtrA serine protease degrades unfolded flagellin protein in the periplasm of Borrelia burgdorferi
Zhang K, Qin Z, Chang Y, Liu J, Malkowski MG, Shipa S, Li L, Qiu W, Zhang J, Li C. Analysis of a flagellar filament cap mutant reveals that HtrA serine protease degrades unfolded flagellin protein in the periplasm of Borrelia burgdorferi. Molecular Microbiology 2019, 111: 1652-1670. PMID: 30883947, PMCID: PMC6561814, DOI: 10.1111/mmi.14243.Peer-Reviewed Original ResearchConceptsPeriplasmic flagellaFliD mutantFlagellin proteinMajor flagellin proteinLyme disease spirochete Borrelia burgdorferiFlagellar cap proteinFlagellar cap protein FliDFlagellar filament assemblyFlagella-deficient mutantsMutant cellsCAP mutantsFlaB proteinsPeriplasmFilament assemblyCap proteinB. burgdorferiFlagellar filamentsGenetic studiesMutantsBorrelia burgdorferiHtrASerine proteasesFliDFlagellin polymerizationSpirochete Borrelia burgdorferi