2023
A dual role for the chromatin reader ORCA/LRWD1 in targeting the origin recognition complex to chromatin
Sahu S, Ekundayo B, Kumar A, Bleichert F. A dual role for the chromatin reader ORCA/LRWD1 in targeting the origin recognition complex to chromatin. The EMBO Journal 2023, 42: embj2023114654. PMID: 37551430, PMCID: PMC10505921, DOI: 10.15252/embj.2023114654.Peer-Reviewed Original ResearchConceptsOrigin recognition complexH4K20 trimethylationHeterochromatin replicationRecognition complexCryo-electron microscopy structureLocal chromatin environmentSpecific histone marksSpecific chromatin contextsMcm2-7 loadingTernary complex assemblyChromatin environmentChromatin marksChromatin contextHistone marksHistone modificationsReplication initiationEukaryotic cellsMicroscopy structureChromatin condensatesORC recruitmentDNA replicationMammalian cellsNucleosomal DNAAromatic cageComplex assembly
2022
A mechanism of origin licensing control through autoinhibition of S. cerevisiae ORC·DNA·Cdc6
Schmidt JM, Yang R, Kumar A, Hunker O, Seebacher J, Bleichert F. A mechanism of origin licensing control through autoinhibition of S. cerevisiae ORC·DNA·Cdc6. Nature Communications 2022, 13: 1059. PMID: 35217664, PMCID: PMC8881611, DOI: 10.1038/s41467-022-28695-w.Peer-Reviewed Original ResearchConceptsOrigin recognition complexS. cerevisiaeCyclin-dependent kinase phosphorylationMcm2-7 loadingN-terminal domainCryo-electron microscopyCDK phosphorylationRecognition complexDNA replicationReplication originsÅ resolutionKinase phosphorylationMechanism of originCdc6Coordinated actionCerevisiaePhosphorylationDNAInhibitory signalsStructural detailsSite regulationRecruitmentOrc6AssemblyCdt1
2020
Structural mechanism for replication origin binding and remodeling by a metazoan origin recognition complex and its co-loader Cdc6
Schmidt JM, Bleichert F. Structural mechanism for replication origin binding and remodeling by a metazoan origin recognition complex and its co-loader Cdc6. Nature Communications 2020, 11: 4263. PMID: 32848132, PMCID: PMC7450096, DOI: 10.1038/s41467-020-18067-7.Peer-Reviewed Original ResearchMeSH KeywordsAAA DomainAdenosine TriphosphateAnimalsCell Cycle ProteinsCryoelectron MicroscopyDNADrosophila melanogasterDrosophila ProteinsHydrolysisMinichromosome Maintenance ProteinsModels, MolecularOrigin Recognition ComplexProtein BindingRecombinant ProteinsReplication OriginSaccharomyces cerevisiaeSaccharomyces cerevisiae ProteinsConceptsOrigin recognition complexRecognition complexReplication originsDrosophila origin recognition complexEukaryotic DNA replication initiationMetazoan origin recognition complexCryo-electron microscopy structureMcm2-7 replicative helicaseATPase siteDNA replication initiationWalker B motifMcm2-7 loadingWinged-helix domainReplicative helicaseReplication initiationMicroscopy structureDistinct DNAB motifOrigin recognitionDNA sequencesDNA bendingDNA bindingPrimary DNADNA geometryLoop region
2019
Mechanisms of replication origin licensing: a structural perspective
Bleichert F. Mechanisms of replication origin licensing: a structural perspective. Current Opinion In Structural Biology 2019, 59: 195-204. PMID: 31630057, DOI: 10.1016/j.sbi.2019.08.007.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsConceptsReplicative helicasesKey cell cycle eventsReplication origin licensingReplication start sitesCell cycle eventsOrigin licensingReplicative helicaseReplication initiationInitiation factorsStart siteChromosomal DNAReplicative machineryCycle eventsMolecular approachesSynthesis apparatusHelicasesMachineryStructural perspectiveBidirectional mannerDNAEukaryotesHelicaseRecent advancesDuplicationMechanismOrigins of DNA replication
Ekundayo B, Bleichert F. Origins of DNA replication. PLOS Genetics 2019, 15: e1008320. PMID: 31513569, PMCID: PMC6742236, DOI: 10.1371/journal.pgen.1008320.Peer-Reviewed Reviews, Practice Guidelines, Standards, and Consensus StatementsMeSH KeywordsBiological EvolutionCell DivisionChromosomesDNA ReplicationEvolution, MolecularReplication OriginRepliconConceptsKingdoms of lifeDomains of lifeDaughter cellsDNA replicationReplication originsCell divisionAccurate duplicationDaughter strandsGenomic DNAHereditary informationSemiconservative replicationGenetic materialFull complementDNA synthesisDiscrete sitesDNABidirectional mannerReplicationDivergent strategiesChromosomesOrganismsDuplicationOriginCellsStrands