2020
Breakage of the Oligomeric CaMKII Hub by the Regulatory Segment of the Kinase
Karandur D, Bhattacharyya M, Xia Z, Lee YK, Muratcioglu S, McAffee D, McSpadden E, Qiu B, Groves JT, Williams ER, Kuriyan J. Breakage of the Oligomeric CaMKII Hub by the Regulatory Segment of the Kinase. ELife 2020, 9: e57784. PMID: 32902386, PMCID: PMC7538161, DOI: 10.7554/elife.57784.Peer-Reviewed Original ResearchConceptsRegulatory segmentDependent protein kinase IIExchange of subunitsProtein kinase IIMammalian cellsFluorescence intensity analysisKinase IIOligomeric enzymesHoloenzymePhosphorylated peptidesNeuronal signalingSmall oligomersActive stateSubunitsCaMKIIActivationCrucial roleMolecular dynamics simulationsMass spectrometryKinasePhosphorylationSignalingHub structureBindsEnzyme
2016
Molecular mechanism of activation-triggered subunit exchange in Ca2+/calmodulin-dependent protein kinase II
Bhattacharyya M, Stratton MM, Going CC, McSpadden ED, Huang Y, Susa AC, Elleman A, Cao YM, Pappireddi N, Burkhardt P, Gee CL, Barros T, Schulman H, Williams ER, Kuriyan J. Molecular mechanism of activation-triggered subunit exchange in Ca2+/calmodulin-dependent protein kinase II. ELife 2016, 5: e13405. PMID: 26949248, PMCID: PMC4859805, DOI: 10.7554/elife.13405.Peer-Reviewed Original ResearchConceptsDependent protein kinase IIProtein kinase IICaMKII holoenzymeKinase IIExchange of subunitsKinase domainSubunit exchangeIntersubunit interfaceMolecular mechanismsOligomeric enzymesHoloenzymeHub interfaceCalmodulinCaMKIIThree-way competitionUnactivated onesDimersDodecamericSubunitsOrganismsEnzymeHubMechanismSpiral formActivation
2014
Activation-triggered subunit exchange between CaMKII holoenzymes facilitates the spread of kinase activity
Stratton M, Lee IH, Bhattacharyya M, Christensen SM, Chao LH, Schulman H, Groves JT, Kuriyan J. Activation-triggered subunit exchange between CaMKII holoenzymes facilitates the spread of kinase activity. ELife 2014, 3: e01610. PMID: 24473075, PMCID: PMC3901001, DOI: 10.7554/elife.01610.Peer-Reviewed Original ResearchMeSH KeywordsAdenosine TriphosphateBinding SitesCalcium-Calmodulin-Dependent Protein Kinase Type 2CalmodulinCatalytic DomainEnzyme ActivationEnzyme StabilityHoloenzymesHumansKineticsMicroscopy, FluorescenceMolecular Docking SimulationMolecular Dynamics SimulationPhosphorylationProtein BindingProtein Structure, QuaternaryProtein SubunitsRecombinant ProteinsSignal TransductionThreonineConceptsExchange of subunitsActivation of CaMKIICalcium-independent phosphorylationRegulatory segmentNew subunitsCaMKII holoenzymeThr-305Subunit exchangeKinase activityHoloenzymeNeuronal signalingCentral hubCaMKIIPhosphorylationSubunitsMemory formationActivationMolecular dynamics simulationsUnactivated onesDodecamericSignalingCalmodulinInteractsResiduesMicroscopy techniques