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
Establishment 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
1999
Erbb4 Signaling in the Mammary Gland Is Required for Lobuloalveolar Development and Stat5 Activation during Lactation
Jones F, Welte T, Fu X, Stern D. Erbb4 Signaling in the Mammary Gland Is Required for Lobuloalveolar Development and Stat5 Activation during Lactation. Journal Of Cell Biology 1999, 147: 77-88. PMID: 10508857, PMCID: PMC2164978, DOI: 10.1083/jcb.147.1.77.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCell LineCell NucleusDNA-Binding ProteinsErbB ReceptorsFemaleGene Expression Regulation, DevelopmentalHumansLactationMammary Glands, AnimalMiceMice, TransgenicMilk ProteinsPhosphorylationPrecipitin TestsPregnancyReceptor, ErbB-4RNA, MessengerSequence DeletionSignal TransductionSrc Homology DomainsSTAT5 Transcription FactorTrans-ActivatorsTransgenesConceptsFunction of ErbB4Dominant-negative alleleMammary glandAlpha-lactalbumin mRNAEpidermal growth factor receptor familyBeta-casein mRNAGrowth factor receptor familyNormal mouse mammary glandMouse mammary glandSH2 domainFactor receptor familyTerminal differentiationProtein mRNAReceptor familyLobuloalveolar developmentAcidic protein mRNASitu hybridizationMammary developmentPhosphorylationErbB4MRNALobuloalveoliUnique responseExpressionImportant role
1996
Spk1/Rad53 is regulated by Mec1-dependent protein phosphorylation in DNA replication and damage checkpoint pathways.
Sun Z, Fay DS, Marini F, Foiani M, Stern DF. Spk1/Rad53 is regulated by Mec1-dependent protein phosphorylation in DNA replication and damage checkpoint pathways. Genes & Development 1996, 10: 395-406. PMID: 8600024, DOI: 10.1101/gad.10.4.395.Peer-Reviewed Original ResearchMeSH KeywordsAlkaline PhosphataseCell CycleCell Cycle ProteinsCell DivisionCheckpoint Kinase 2DNA DamageDNA ReplicationDNA, FungalFungal ProteinsGene Expression Regulation, FungalGenes, FungalHydroxyureaImmunoblottingIntracellular Signaling Peptides and ProteinsMethyl MethanesulfonateMutagenesisPhosphorylationPrecipitin TestsProtein KinasesProtein Serine-Threonine KinasesSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsSignal TransductionTemperatureConceptsProtein kinaseCheckpoint pathwayEssential protein kinaseDamage checkpoint pathwayDamage-induced phosphorylationKinase-defective formG1/S boundarySignal transduction pathwaysRegulation of phosphorylationTreatment of cellsCheckpoint functionCdc mutantsDNA replicationProtein phosphorylationUpstream kinaseCheckpoint arrestRegulated phosphorylationTransduction pathwaysKinase activityCell cyclePhosphorylationS boundaryDamage DNACycle arrestKinase
1992
A subdomain in the transmembrane domain is necessary for p185neu* activation.
Cao H, Bangalore L, Bormann BJ, Stern DF. A subdomain in the transmembrane domain is necessary for p185neu* activation. The EMBO Journal 1992, 11: 923-932. PMID: 1347745, PMCID: PMC556533, DOI: 10.1002/j.1460-2075.1992.tb05131.x.Peer-Reviewed Original ResearchMeSH Keywords3T3 CellsAmino Acid SequenceAnimalsBase SequenceBlotting, WesternCell MembraneElectrophoresis, Polyacrylamide GelErbB ReceptorsGliomaGlutamatesGlutamic AcidMiceMolecular Sequence DataMutagenesis, Site-DirectedNeuroblastomaPrecipitin TestsProtein-Tyrosine KinasesProto-Oncogene ProteinsRatsReceptor, ErbB-2Signal TransductionValineConceptsTransmembrane domainTyrosine kinase activityKinase activityElevated tyrosine kinase activitySite-directed mutagenesisSpecific amino acidsEpidermal growth factor receptorGlutamic acidGrowth factor receptorEGF receptorPrimary structureAmino acidsFactor receptorProteinSpecific interactionsActivationDomainMutagenesisReceptorsMolecular weightAcidNeu proteinP185neuHigh propensityRole