Featured Publications
Polo-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
2005
The Plk1 Polo Box Domain Mediates a Cell Cycle and DNA Damage Regulated Interaction with Chk2
Tsvetkov LM, Tsekova RT, Xu X, Stern DF. The Plk1 Polo Box Domain Mediates a Cell Cycle and DNA Damage Regulated Interaction with Chk2. Cell Cycle 2005, 4: 602-610. PMID: 15876876, DOI: 10.4161/cc.4.4.1599.Peer-Reviewed Original ResearchMeSH KeywordsAnimalsCatalytic DomainCell CycleCell Cycle ProteinsCell DivisionCell SeparationCheckpoint Kinase 2DNA DamageDNA RepairG2 PhaseGenetic VectorsGlutathione TransferaseHeLa CellsHumansImmunoblottingImmunoprecipitationIn Vitro TechniquesMitosisPhosphorylationProtein BindingProtein KinasesProtein Serine-Threonine KinasesProtein Structure, TertiaryProto-Oncogene ProteinsSignal TransductionConceptsPlk1 polo-box domainDNA damage checkpointPolo-box domainPolo-like kinase 1Eukaryotic proteinsDamage checkpointMitotic regulationBox domainRegulated interactionPlk1 activityProtein kinaseSignaling cascadesChk2Kinase 1Tumor suppressorCell cycleDNA damageS phasePlk1M phaseMitosisMultiple processesPotential mechanismsPhosphorylatesKinase
2004
Phosphorylation of Plk1 at S137 and T210 is Inhibited in Response to DNA Damage
Tsvetkov L, Stern DF. Phosphorylation of Plk1 at S137 and T210 is Inhibited in Response to DNA Damage. Cell Cycle 2004, 4: 166-171. PMID: 15611664, DOI: 10.4161/cc.4.1.1348.Peer-Reviewed Original ResearchMeSH KeywordsAtaxia Telangiectasia Mutated ProteinsCaffeineCDC2 Protein KinaseCdc25 PhosphatasesCell Cycle ProteinsCell DivisionCell Line, TumorCheckpoint Kinase 1Checkpoint Kinase 2Cyclin BDNA DamageDNA-Binding ProteinsDoxorubicinEnzyme ActivationG2 PhaseHumansMitosisNocodazolePhosphorylationProtein KinasesProtein Serine-Threonine KinasesProto-Oncogene ProteinsSerineSignal TransductionStaurosporineThreonineTumor Suppressor ProteinsConceptsDNA damage checkpointThreonine 210Damage checkpointPlk1 phosphorylationDNA damageCdc2/cyclin B kinaseATR-dependent checkpoint pathwayChk2 protein kinaseDNA damage-induced inhibitionATM/ATRCyclin B kinasePolo-like kinase 1Phosphorylation of PLK1Activation of Cdc25CNuclear importPhosphopeptide mappingMitotic entryActivation loopPhosphorylation sitesVivo phosphorylationPlk1 activityKinase domainProtein kinasePrevents phosphorylationActive mutant