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 diseaseMDC1PtcbGenes
2008
NFBD1/MDC1, 53BP1 and BRCA1 have both redundant and unique roles in the ATM pathway
Wilson KA, Stern DF. NFBD1/MDC1, 53BP1 and BRCA1 have both redundant and unique roles in the ATM pathway. Cell Cycle 2008, 7: 3584-3594. PMID: 19001859, PMCID: PMC2763172, DOI: 10.4161/cc.7.22.7102.Peer-Reviewed Original ResearchMeSH KeywordsAdaptor Proteins, Signal TransducingAtaxia Telangiectasia Mutated ProteinsBRCA1 ProteinCell Cycle ProteinsCell LineCheckpoint Kinase 2DNA-Binding ProteinsFibroblastsHumansIntracellular Signaling Peptides and ProteinsNuclear ProteinsPhosphorylationProtein Serine-Threonine KinasesRadiation, IonizingRNA, Small InterferingTrans-ActivatorsTumor Suppressor p53-Binding Protein 1Tumor Suppressor ProteinsConceptsNFBD1/MDC1DNA damage checkpoint proteinsRadiation-induced phosphorylationATM-Chk2 pathwayNormal genetic backgroundBRCT domainCheckpoint responseRedundant functionsPrimary human cellsRedundant rolesATM pathwayNFBD1Checkpoint proteinsMouse cellsHuman cellsGenetic backgroundMDC1Cancer cellsLocalization eventsPhosphorylationBRCA1Unique rolePathwayCellsHuman foreskin
2003
NFBD1/MDC1 regulates ionizing radiation‐induced focus formation by DNA checkpoint signaling and repair factors
Xu X, Stern DF. NFBD1/MDC1 regulates ionizing radiation‐induced focus formation by DNA checkpoint signaling and repair factors. The FASEB Journal 2003, 17: 1842-1848. PMID: 14519663, DOI: 10.1096/fj.03-0310com.Peer-Reviewed Original ResearchConceptsNFBD1/MDC1DNA checkpointMRN complexRepair factorsIRIF formationATM/ATR substratesRadiation-induced nuclear fociRadiation-induced focus formationDNA damageBRCT domainFHA domainATR substratesNbs1 complexMre11-Rad50Nuclear fociNFBD1Repair proteinsTandem repeatsFoci formationMre11NBS1MDC1CheckpointNuclear factorBinds
2002
Chk2 Activation and Phosphorylation-Dependent Oligomerization
Xu X, Tsvetkov LM, Stern DF. Chk2 Activation and Phosphorylation-Dependent Oligomerization. Molecular And Cellular Biology 2002, 22: 4419-4432. PMID: 12024051, PMCID: PMC133858, DOI: 10.1128/mcb.22.12.4419-4432.2002.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsAtaxia Telangiectasia Mutated ProteinsBinding SitesCell Cycle ProteinsCell-Free SystemCells, CulturedCheckpoint Kinase 2DNA DamageDNA-Binding ProteinsEnzyme ActivationFibroblastsGenes, Tumor SuppressorHumansMutationPhosphorylationProtein KinasesProtein Serine-Threonine KinasesProtein Structure, TertiaryRabbitsRadiation, IonizingRecombinant ProteinsSignal TransductionTumor Suppressor ProteinsConceptsSQ/TQ cluster domainsChk2 activationDNA damageDNA damage checkpoint pathwaySerine/threonine kinaseAutophosphorylation of Chk2Phosphorylation-dependent oligomerizationDamage checkpoint pathwayKinase catalytic domainForkhead-associated (FHA) domainWortmannin-sensitive kinaseChk2 kinase activityLimited DNA damageAmino acid substitutionsCell-free systemEukaryotic proteinsFHA domainActive Chk2Threonine kinaseCheckpoint functionCatalytic domainOligomeric complexesCheckpoint pathwayKinase activityChk2