2023
A novel homozygous nonsense variant of AK7 is associated with multiple morphological abnormalities of the sperm flagella
Chang T, Tang H, Zhou X, He J, Liu N, Li Y, Xiang W, Yao Z. A novel homozygous nonsense variant of AK7 is associated with multiple morphological abnormalities of the sperm flagella. Reproductive BioMedicine Online 2023, 48: 103765. PMID: 38492416, DOI: 10.1016/j.rbmo.2023.103765.Peer-Reviewed Original ResearchConceptsHomozygous nonsense variantMultiple morphological abnormalitiesWhole-exome sequencingSperm flagellaAssociated with multiple morphological abnormalitiesMitochondrial function of spermatozoaFlagella-associated proteinsFunction of spermatozoaPotential gene variantsMitochondrial metabolic dysfunctionSperm ultrastructureFlagellar assemblyPatient's spermatozoaFlagellar defectsRate of apoptosisConcentration of reactive oxygen speciesMale infertilitySanger sequencingReactive oxygen speciesMitochondrial functionSpermSpermatozoaMutated genesFunctional associationDisease phenotypeA CUG-initiated CATSPERθ functions in the CatSper channel assembly and serves as a checkpoint for flagellar trafficking
Huang X, Miyata H, Wang H, Mori G, Iida-Norita R, Ikawa M, Percudani R, Chung J. A CUG-initiated CATSPERθ functions in the CatSper channel assembly and serves as a checkpoint for flagellar trafficking. Proceedings Of The National Academy Of Sciences Of The United States Of America 2023, 120: e2304409120. PMID: 37725640, PMCID: PMC10523455, DOI: 10.1073/pnas.2304409120.Peer-Reviewed Original ResearchConceptsChannel assemblySperm flagellaTransmembrane domain-containing proteinsSperm tail formationDomain-containing proteinsCatSper channel complexMale fertilityFlagellar traffickingMacromolecular complexesTail formationPhysiological roleSuccessful fertilizationCalcium signalingCatSper channelsFlagellaGenetic abrogationChannel complexNormal expressionDimer formationSpermatid cellsProteinCheckpointHyperactivated motilityAssemblyPotential role
2022
Predicting the locations of force-generating dyneins in beating cilia and flagella
Howard J, Chasteen A, Ouyang X, Geyer VF, Sartori P. Predicting the locations of force-generating dyneins in beating cilia and flagella. Frontiers In Cell And Developmental Biology 2022, 10: 995847. PMID: 36303602, PMCID: PMC9592896, DOI: 10.3389/fcell.2022.995847.Peer-Reviewed Original ResearchDynein motorsDynein motor proteinsCryogenic electron microscopyMotor proteinsCylindrical organellesDyneinSperm flagellaConformational statesFlagellaAxonemeMotile structuresCiliaThree-dimensional architectureSingle pairOrganellesATPasesIndividual motor activityProteinMolecular mechanics approachActivity changesLarge numberCellsKey questions3D structure and in situ arrangements of CatSper channel in the sperm flagellum
Zhao Y, Wang H, Wiesehoefer C, Shah NB, Reetz E, Hwang JY, Huang X, Wang TE, Lishko PV, Davies KM, Wennemuth G, Nicastro D, Chung JJ. 3D structure and in situ arrangements of CatSper channel in the sperm flagellum. Nature Communications 2022, 13: 3439. PMID: 35715406, PMCID: PMC9205950, DOI: 10.1038/s41467-022-31050-8.Peer-Reviewed Original ResearchConceptsCatSper complexSperm flagellaCryo-electron tomographyHigher-order organizationMammalian spermIntracellular domainStructural basisExtracellular domainTetrameric channelChannel CatSperSuccessful fertilizationFlagellar movementCatSper channelsChannel poreSitu mapSitu arrangementHuman sperm flagellumPrimary Ca2CatSperDimer formationFlagellaCentral roleSpermAtomic modelSperm motility
2021
Molecular Evolution of CatSper in Mammals and Function of Sperm Hyperactivation in Gray Short-Tailed Opossum
Hwang JY, Maziarz J, Wagner GP, Chung JJ. Molecular Evolution of CatSper in Mammals and Function of Sperm Hyperactivation in Gray Short-Tailed Opossum. Cells 2021, 10: 1047. PMID: 33946695, PMCID: PMC8147001, DOI: 10.3390/cells10051047.Peer-Reviewed Original ResearchConceptsMolecular evolutionHigh sequence divergenceSperm-specific ion channelIQ-like motifSequence divergenceCatSper activityCatSper subunitsMolecular regulationFertilization environmentSperm hyperactivationCatSper proteinsAmerican marsupialsCatSper functionSequence analysisMarsupialsFemale reproductive tractGray Short-Tailed OpossumsEutheriansSperm flagellaCatSper channelsIon channelsCatSperCurrent understandingOpossumSperm
2014
Insights into the Structure and Function of Ciliary and Flagellar Doublet Microtubules TEKTINS, Ca2+-BINDING PROTEINS, AND STABLE PROTOFILAMENTS* ♦
Linck R, Fu X, Lin J, Ouch C, Schefter A, Steffen W, Warren P, Nicastro D. Insights into the Structure and Function of Ciliary and Flagellar Doublet Microtubules TEKTINS, Ca2+-BINDING PROTEINS, AND STABLE PROTOFILAMENTS* ♦. Journal Of Biological Chemistry 2014, 289: 17427-17444. PMID: 24794867, PMCID: PMC4067180, DOI: 10.1074/jbc.m114.568949.Peer-Reviewed Original ResearchConceptsDoublet microtubulesRibbon proteinNexin-dynein regulatory complexCiliary motilityA-tubuleIntraflagellar transportRegulatory complexAcetylated α-tubulinSignal transductionHuman homologueSpecialized functionsTektin ACalcium-binding proteinsCell organellesHuman diseasesBinding proteinΑ-tubulinΒ-tubulinSea urchin sperm flagellaSperm flagellaMicrotubule systemProteinStable protofilamentsFlagellaWide filaments
2012
The 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
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