ArticleThe Journal of biological chemistry2015
Dpb11 protein helps control assembly of the Cdc45·Mcm2-7·GINS replication fork helicase.
Article in The Journal of biological chemistry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.
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Who cites it
17 citing papers in PubMed, 28 citations in OpenAlex.
- Dpb11 facilitates the colocalization of Mec1-Ddc2 with its activators on gapped DNA.Cell reports · 2026Article
- Decoding the hub gene blueprint for broiler liver development: A synergistic histomorphological and transcriptomic investigation during the neonatal phase.Poultry science · 2026Article
- Molecular interplay between the DNA damage checkpoint kinase Mec1-Ddc2 and its activator Dpb11 on gapped DNA.bioRxiv : the preprint server for biology · 2025Article
- Sld3CBD-Cdc45 structural insights into Cdc45 recruitment for CMG complex formation during DNA replication.eLife · 2025Article
- Phosphorylation-dependent assembly of DNA damage response systems and the central roles of TOPBP1.DNA repair · 2021Review
- Congenital Diseases of DNA Replication: Clinical Phenotypes and Molecular Mechanisms.International journal of molecular sciences · 2021Review
- An intact Mcm10 coiled-coil interaction surface is important for origin melting, helicase assembly and the recruitment of Pol-α to Mcm2-7.Nucleic acids research · 2017Article
- Eukaryotic Replicative Helicase Subunit Interaction with DNA and Its Role in DNA Replication.Genes · 2017Review
- Mechanisms and regulation of DNA replication initiation in eukaryotes.Critical reviews in biochemistry and molecular biology · 2017Review
- A Positive Amplification Mechanism Involving a Kinase and Replication Initiation Factor Helps Assemble the Replication Fork Helicase.The Journal of biological chemistry · 2017Article
- Review
- Article
- Multi-BRCT scaffolds use distinct strategies to support genome maintenance.Cell cycle (Georgetown, Tex.) · 2016Review
- Mcm10 coordinates the timely assembly and activation of the replication fork helicase.Nucleic acids research · 2016Article
- The Replication Initiation Protein Sld3/Treslin Orchestrates the Assembly of the Replication Fork Helicase during S Phase.The Journal of biological chemistry · 2015Article
- Conserved mechanism for coordinating replication fork helicase assembly with phosphorylation of the helicase.Proceedings of the National Academy of Sciences of the United States of America · 2015Article
- Insights into the Initiation of Eukaryotic DNA Replication.Nucleus (Austin, Tex.) · 2015Article
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Authors and funding
5 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Dpb11 is required for the initiation of DNA replication in budding yeast. Dpb11 binds to S-phase cyclin-dependent kinase-phosphorylated Sld2 and Sld3 to form a ternary complex during S phase. The replication fork helicase in eukaryotes is composed of Cdc45, Mcm2-7, and GINS. We show here, using purified proteins from budding yeast, that Dpb11 alone binds to Mcm2-7 and that Dpb11 also competes with GINS for binding to Mcm2-7. Furthermore, Dpb11 binds directly to single-stranded DNA (ssDNA), and ssDNA inhibits the Dpb11 interaction with Mcm2-7. We also found that Dpb11 can recruit Cdc45 to Mcm2-7. We identified a mutant of the BRCT4 motif of Dpb11 that remains bound to Mcm2-7 in the presence of ssDNA (dpb11-m1,m2,m3,m5), and this mutant exhibits a DNA replication defect when expressed in budding yeast cells. Expression of this mutant results in increased interaction between Dpb11 and Mcm2-7 during S phase, impaired GINS interaction with Mcm2-7 during S phase, and decreased replication protein A (RPA) interaction with origin DNA during S phase. We propose a model in which Dpb11 first recruits Cdc45 to Mcm2-7. Dpb11, although bound to Cdc45·Mcm2-7, can block the interaction between GINS and Mcm2-7. Upon extrusion of ssDNA from the central channel of Mcm2-7, Dpb11 dissociates from Mcm2-7, and Dpb11 binds to ssDNA, thereby allowing GINS to bind to Cdc45·Mcm2-7. Finally, we propose that Dpb11 functions with Sld2 and Sld3 to help control the assembly of the replication fork helicase.
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