2010
Myosin II directly binds and inhibits Dbl family guanine nucleotide exchange factors: a possible link to Rho family GTPases
Lee CS, Choi CK, Shin EY, Schwartz MA, Kim EG. Myosin II directly binds and inhibits Dbl family guanine nucleotide exchange factors: a possible link to Rho family GTPases. Journal Of Cell Biology 2010, 190: 663-674. PMID: 20713598, PMCID: PMC2928003, DOI: 10.1083/jcb.201003057.Peer-Reviewed Original ResearchMeSH KeywordsActomyosinAnimalsBinding SitesCdc42 GTP-Binding ProteinCell AdhesionCell MovementEnzyme ActivationGuanine Nucleotide Exchange FactorsHumansJurkat CellsMiceMyosin Type IINIH 3T3 CellsPlatelet-Derived Growth FactorProtein BindingRac1 GTP-Binding ProteinRatsRecombinant Fusion ProteinsRho GTP-Binding ProteinsRho Guanine Nucleotide Exchange FactorsRNA, Small InterferingConceptsFocal complex formationDbl family guanineMyosin IIExchange factorFamily guanineATPase activityNonmuscle myosin IIComplex formationGEF activitySpatiotemporal regulationRho familyCdc42 GTPasesAdhesion dynamicsRho GTPasesCdc42 activationLamellipodial protrusionCell protrusionsActomyosin contractionGEFNIH3T3 fibroblastsFunctional linkCell migrationGTPasesCatalytic siteHomology modules
2007
Function of the N-terminus of zizimin1: autoinhibition and membrane targeting
Meller N, Westbrook MJ, Shannon JD, Guda C, Schwartz MA. Function of the N-terminus of zizimin1: autoinhibition and membrane targeting. Biochemical Journal 2007, 409: 525-533. PMID: 17935486, PMCID: PMC2740492, DOI: 10.1042/bj20071263.Peer-Reviewed Original ResearchConceptsGEF domainCZH proteinsRho family small GTPasesPH domain bindsCdc42-specific GEFMultiple cellular functionsBasis of homologyN-terminal regionSmall GTPasesDomain bindsGEF activityRho proteinsCellular functionsRho-GEFsNovel functionN-terminusCritical regulatorStructural domainsLimited proteolysisZizimin1ProteinBindsDomainMembraneGTPasesInduction of Vascular Permeability: βPIX and GIT1 Scaffold the Activation of Extracellular Signal-regulated Kinase by PAK
Stockton R, Reutershan J, Scott D, Sanders J, Ley K, Schwartz MA. Induction of Vascular Permeability: βPIX and GIT1 Scaffold the Activation of Extracellular Signal-regulated Kinase by PAK. Molecular Biology Of The Cell 2007, 18: 2346-2355. PMID: 17429073, PMCID: PMC1877103, DOI: 10.1091/mbc.e06-07-0584.Peer-Reviewed Original ResearchMeSH KeywordsAdaptor Proteins, Signal TransducingAnimalsCapillary PermeabilityCattleCell Cycle ProteinsCells, CulturedEndothelial CellsEnzyme ActivationExtracellular Signal-Regulated MAP KinasesGuanine Nucleotide Exchange FactorsHumansInflammationLipopolysaccharidesLungMiceP21-Activated KinasesPeptidesProtein Serine-Threonine KinasesRho Guanine Nucleotide Exchange FactorsConceptsP21-activated kinaseMitogen-activated protein kinase kinaseEndothelial cell-cell junctionsExtracellular signal-regulated kinaseCell-cell junctionsProtein kinase kinaseMyosin light chain phosphorylationLight chain phosphorylationSignal-regulated kinaseCell-permeant peptideActivation of ERKKinase kinaseExtracellular signalsPAK functionChain phosphorylationCritical regulatorKinaseCell contractilityCell typesCultured endothelial cellsPhosphorylationMouse lung injury modelMyosin phosphorylationEndothelial cellsGIT1
2005
Zizimin2: a novel, DOCK180‐related Cdc42 guanine nucleotide exchange factor expressed predominantly in lymphocytes
Nishikimi A, Meller N, Uekawa N, Isobe K, Schwartz MA, Maruyama M. Zizimin2: a novel, DOCK180‐related Cdc42 guanine nucleotide exchange factor expressed predominantly in lymphocytes. FEBS Letters 2005, 579: 1039-1046. PMID: 15710388, DOI: 10.1016/j.febslet.2005.01.006.Peer-Reviewed Original ResearchAmino Acid SequenceAnimalsCdc42 GTP-Binding ProteinCell LineCloning, MolecularEnzyme ActivationGene Expression ProfilingGuanine Nucleotide Exchange FactorsLymphocytesMiceMolecular Sequence DataProtein BindingProtein IsoformsProtein Structure, TertiaryRac GTP-Binding ProteinsSequence AlignmentSubstrate Specificity
2004
The Novel Cdc42 Guanine Nucleotide Exchange Factor, Zizimin1, Dimerizes via the Cdc42-binding CZH2 Domain*
Meller N, Irani-Tehrani M, Ratnikov BI, Paschal BM, Schwartz MA. The Novel Cdc42 Guanine Nucleotide Exchange Factor, Zizimin1, Dimerizes via the Cdc42-binding CZH2 Domain*. Journal Of Biological Chemistry 2004, 279: 37470-37476. PMID: 15247287, DOI: 10.1074/jbc.m404535200.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceAnimalsBase SequenceCdc42 GTP-Binding ProteinCOS CellsDimerizationDNA PrimersGuanine Nucleotide Exchange FactorsMicroscopy, ElectronMolecular WeightSurface Plasmon ResonanceConceptsExchange factorCdc42 Guanine Nucleotide Exchange FactorGuanine nucleotide exchange factorsRho family small GTPasesDomain-containing proteinsNucleotide exchange factorsMultiple cellular processesCDM proteinsCZH proteinsSmall GTPasesRho proteinsCellular processesCdc42 activationRho-GEFsCdc42Acid regionHomology analysisCritical regulatorZizimin1ProteinPositive cooperativityMutation analysisDimerizationDock180GTPases
2003
Guanine Exchange-Dependent and -Independent Effects of Vav1 on Integrin-Induced T Cell Spreading
del Pozo MA, Schwartz MA, Hu J, Kiosses WB, Altman A, Villalba M. Guanine Exchange-Dependent and -Independent Effects of Vav1 on Integrin-Induced T Cell Spreading. The Journal Of Immunology 2003, 170: 41-47. PMID: 12496381, DOI: 10.4049/jimmunol.170.1.41.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCdc42 GTP-Binding ProteinCell Cycle ProteinsCell SizeCells, CulturedDrug SynergismEnzyme ActivationFibronectinsGuanine Nucleotide Exchange FactorsHumansHybridomasIntegrinsJNK Mitogen-Activated Protein KinasesJurkat CellsMiceMitogen-Activated Protein KinasesP21-Activated KinasesPhosphorylationProtein Serine-Threonine KinasesProto-Oncogene ProteinsProto-Oncogene Proteins c-vavRac GTP-Binding ProteinsT-Lymphocytes
2002
Zizimin1, a novel Cdc42 activator, reveals a new GEF domain for Rho proteins
Meller N, Irani-Tehrani M, Kiosses WB, Del Pozo MA, Schwartz MA. Zizimin1, a novel Cdc42 activator, reveals a new GEF domain for Rho proteins. Nature Cell Biology 2002, 4: 639-647. PMID: 12172552, DOI: 10.1038/ncb835.Peer-Reviewed Original ResearchMeSH Keywords3T3 CellsAmino Acid SequenceAnimalsBinding SitesCdc42 GTP-Binding ProteinCloning, MolecularEnzyme ActivationGuanine Nucleotide Exchange FactorsHumansMiceMolecular Sequence DataProtein Structure, TertiaryRho GTP-Binding ProteinsRNA, MessengerSequence Homology, Amino AcidTissue DistributionConceptsGuanine nucleotide exchange factorsCdc42 activatorGEF domainRho family GTPases RacNucleotide exchange factorsCDM proteinsRho proteinsRho familyGTPases RacNew superfamilySequence comparisonCdc42 activationNew proteinsMutational analysisGene expressionBiochemical searchCell migrationProteinDirect interactionCdc42Zizimin1RacActivatorGTPasesDomainEffects of cell tension on the small GTPase Rac
Katsumi A, Milanini J, Kiosses WB, del Pozo MA, Kaunas R, Chien S, Hahn KM, Schwartz MA. Effects of cell tension on the small GTPase Rac. Journal Of Cell Biology 2002, 158: 153-164. PMID: 12105187, PMCID: PMC2173027, DOI: 10.1083/jcb.200201105.Peer-Reviewed Original ResearchMeSH KeywordsAmidesAnimalsAzepinesCell LineCell MembraneCell MovementCollagenDose-Response Relationship, DrugEnergy TransferGTP PhosphohydrolasesGuanine Nucleotide Exchange FactorsMicroscopy, FluorescenceMicroscopy, Phase-ContrastMicroscopy, VideoNaphthalenesNeoplasm ProteinsProteinsPseudopodiaPyridinesRac GTP-Binding ProteinsRatsStress, MechanicalT-Lymphoma Invasion and Metastasis-inducing Protein 1Time FactorsTransfection
1996
Transformation by Rho exchange factor oncogenes is mediated by activation of an integrin‐dependent pathway.
Schwartz M, Toksoz D, Khosravi‐Far R. Transformation by Rho exchange factor oncogenes is mediated by activation of an integrin‐dependent pathway. The EMBO Journal 1996, 15: 6525-6530. PMID: 8978679, PMCID: PMC452477, DOI: 10.1002/j.1460-2075.1996.tb01043.x.Peer-Reviewed Original ResearchMeSH Keywords3T3 CellsA Kinase Anchor ProteinsAdaptor Proteins, Signal TransducingAnimalsCalciumCell DivisionCell Transformation, NeoplasticGTP-Binding ProteinsGuanine Nucleotide Exchange FactorsIntegrinsKineticsMiceMinor Histocompatibility AntigensModels, BiologicalOncogenesPhosphatidylinositol 4,5-DiphosphateProto-Oncogene ProteinsRetroviridae Proteins, OncogenicRho GTP-Binding ProteinsSignal TransductionThrombinConceptsConstitutive activationCell growthIntegrin signal transductionSmall GTPase RhoIntegrin-dependent pathwaySignal transductionSignaling eventsGrowth factor receptorGTPase RhoSerum-dependent growthAnchorage independenceFactor receptorPathwayOncogeneUncontrolled growthRhoActivationImportant mediatorTumor cellsGrowthTransductionTransmit signalDblGrowth resultsAnchorage