Featured Publications
Microcephalin Is a DNA Damage Response Protein Involved in Regulation of CHK1 and BRCA1 * ♦
Xu X, Lee J, Stern DF. Microcephalin Is a DNA Damage Response Protein Involved in Regulation of CHK1 and BRCA1 * ♦. Journal Of Biological Chemistry 2004, 279: 34091-34094. PMID: 15220350, DOI: 10.1074/jbc.c400139200.Peer-Reviewed Original ResearchMeSH KeywordsBlotting, NorthernBlotting, WesternBRCA1 ProteinCell CycleCell Cycle ProteinsCell LineCheckpoint Kinase 1Cytoskeletal ProteinsDNADNA DamageDown-RegulationG2 PhaseGene Expression RegulationGene Expression Regulation, NeoplasticHistonesHumansMicroscopy, FluorescenceMitosisNerve Tissue ProteinsPhosphorylationPlasmidsPrecipitin TestsProtein KinasesProtein Structure, TertiaryRadiation, IonizingRNA, MessengerRNA, Small InterferingConceptsDNA damage-induced cellular responsesDNA damage response proteinsCellular responsesDamage response proteinsNFBD1/MDC1Regulation of BRCA1Regulation of Chk1Radiation-induced fociEndogenous BRCA1BRCT domainFirst geneResponse proteinsTranscript levelsMCPH1Primary microcephalyProteinMicrocephalinChk1Autosomal recessive diseaseBRCA1RegulationRecessive diseaseMDC1PtcbGenesPolo-like Kinase 1 and Chk2 Interact and Co-localize to Centrosomes and the Midbody*
Tsvetkov L, Xu X, Li J, Stern DF. Polo-like Kinase 1 and Chk2 Interact and Co-localize to Centrosomes and the Midbody*. Journal Of Biological Chemistry 2002, 278: 8468-8475. PMID: 12493754, DOI: 10.1074/jbc.m211202200.Peer-Reviewed Original ResearchConceptsPhosphorylation of Chk2Polo-like kinase 1Thr-68DNA damageSimilar subcellular localization patternsDNA damage checkpoint pathwayKinase 1Damage checkpoint pathwaySubcellular localization patternsChromosome segregationMitotic exitLate mitosisNuclear fociMitotic entryIndirect immunofluorescence microscopyMitotic checkpointSer-28Early mitosisCheckpoint pathwayChk2Localization patternsCentrosomesThr-26Immunofluorescence microscopyMidbody
2004
A Ddc2-Rad53 Fusion Protein Can Bypass the Requirements for RAD9 and MRC1 in Rad53 Activation
Lee SJ, Duong JK, Stern DF. A Ddc2-Rad53 Fusion Protein Can Bypass the Requirements for RAD9 and MRC1 in Rad53 Activation. Molecular Biology Of The Cell 2004, 15: 5443-5455. PMID: 15456903, PMCID: PMC532024, DOI: 10.1091/mbc.e04-07-0608.Peer-Reviewed Original ResearchConceptsDNA damageDNA damage checkpoint pathwayFusion proteinDamage checkpoint pathwayRad53p activationRad53 activationMethyl methaneCheckpoint pathwaySignaling systemCell survivalMediator requirementMec1pEssential roleProteinCellsActivationExpressionRad53pRad9pDdc2Rad9Mrc1pMinimal requirementsMrc1OligomerizationEstablishment of a Cell-Free System to Study the Activation of Chk2
Xu X, Stern DF. Establishment of a Cell-Free System to Study the Activation of Chk2. Methods In Molecular Biology 2004, 280: 165-174. PMID: 15187252, DOI: 10.1385/1-59259-788-2:165.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAtaxia Telangiectasia Mutated ProteinsCell Cycle ProteinsCell-Free SystemCheckpoint Kinase 2DNA DamageDNA-Binding ProteinsGenetic VectorsHumansImmunoblottingPlasmidsPrecipitin TestsProtein BiosynthesisProtein Serine-Threonine KinasesRabbitsReticulocytesTranscription, GeneticTriticumTumor Suppressor ProteinsConceptsActivation of Chk2Cell-free systemVitro transcription/translation systemTranscription/translation systemCheckpoint kinase Chk2Rabbit reticulocyte lysateWheat germ extractKinase Chk2Identification of cofactorsReticulocyte lysateChk2Germ extractDNA damageTranslation systemActivationKinaseCofactorProteinATRLysatesPathway
1997
Mutations in SPK1/RAD53 that specifically abolish checkpoint but not growth-related functions
Fay DS, Sun Z, Stern D. Mutations in SPK1/RAD53 that specifically abolish checkpoint but not growth-related functions. Current Genetics 1997, 31: 97-105. PMID: 9021124, DOI: 10.1007/s002940050181.Peer-Reviewed Original ResearchMeSH KeywordsAllelesCell Cycle ProteinsCheckpoint Kinase 2Cloning, MolecularElectrophoresis, Polyacrylamide GelGene Expression Regulation, EnzymologicGene Expression Regulation, FungalMutagenesisPlasmidsProtein KinasesProtein Serine-Threonine KinasesSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSequence DeletionTransformation, GeneticConceptsCheckpoint functionKinase domainKinase activityEssential protein kinaseWild-type levelsGrowth-related functionsCheckpoint arrestProtein kinaseDeletional analysisN-terminusSPK1Cell cycleMutant allelesGrowth activityMutationsRad53Normal rateSaccharomycesMultiple stagesKinaseDomainCheckpointActivityAllelesRegulation
1991
Membrane-anchored forms of EGF stimulate focus formation and intercellular communication.
Dobashi Y, Stern DF. Membrane-anchored forms of EGF stimulate focus formation and intercellular communication. Oncogene 1991, 6: 1151-9. PMID: 1861865.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell CommunicationCell LineEpidermal Growth FactorErbB ReceptorsFibroblastsFluorescent Antibody TechniqueGene ExpressionGenes, ImmunoglobulinGenetic VectorsHeLa CellsImmunoblottingMembrane GlycoproteinsMembrane ProteinsPlasmidsProtein Sorting SignalsRatsRecombinant Fusion ProteinsSignal TransductionTransfectionViral Envelope ProteinsConceptsSoluble epidermal growth factorEpidermal growth factorEGF receptorFusion proteinFoci formationFunction of EGFG fusion proteinCytoplasmic domain sequencesMembrane-anchored formRat fibroblastsLarge propeptideTransmembrane domainAutocrine transformationPlasma membraneDomain sequencesExpression systemSoluble proteinForms of EGFIntercellular communicationHeLa cellsNeighboring cellsProteinSmall familyAnchored formCell lines
1990
The epidermal growth factor receptor and the product of the neu protooncogene are members of a receptor tyrosine phosphorylation cascade.
Connelly PA, Stern DF. The epidermal growth factor receptor and the product of the neu protooncogene are members of a receptor tyrosine phosphorylation cascade. Proceedings Of The National Academy Of Sciences Of The United States Of America 1990, 87: 6054-6057. PMID: 1974718, PMCID: PMC54470, DOI: 10.1073/pnas.87.16.6054.Peer-Reviewed Original Research
1989
The Ick tyrosine protein kinase interacts with the cytoplasmic tail of the CD4 glycoprotein through its unique amino-terminal domain
Shaw A, Amrein K, Hammond C, Stern D, Sefton B, Rose J. The Ick tyrosine protein kinase interacts with the cytoplasmic tail of the CD4 glycoprotein through its unique amino-terminal domain. Cell 1989, 59: 627-636. PMID: 2582490, DOI: 10.1016/0092-8674(89)90008-1.Peer-Reviewed Original ResearchMeSH KeywordsAmino Acid SequenceBase SequenceCD4 AntigensCytoplasmHeLa CellsHumansLymphocyte Specific Protein Tyrosine Kinase p56(lck)Macromolecular SubstancesMembrane GlycoproteinsMolecular Sequence DataMutationOligonucleotide ProbesPhosphoproteinsPlasmidsProtein BindingProtein MultimerizationProtein-Tyrosine KinasesT-LymphocytesTransfectionConceptsAmino-terminal domainCytoplasmic domainTyrosine protein kinase p56lckUnique amino-terminal domainT cell-specific proteinsTyrosine protein kinaseSpecific transmembrane proteinsCell-specific proteinsIntracellular tyrosine kinaseAmino-terminal residuesCarboxy-terminal residuesTransmembrane proteinCytoplasmic tailSrc familyProtein kinaseKinase p56lckTyrosine kinaseHeLa cellsCell surfaceProteinDeleted formsSurface glycoproteinP56lckKinaseResidues