ArticleThe Journal of biological chemistry2015
Identification of Subunit Binding Positions on a Model Fork and Displacements That Occur during Sequential Assembly of the Escherichia coli Primosome.
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 11 papers.
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Who cites it
11 citing papers in PubMed, 12 citations in OpenAlex.
- Domain dynamics within the PriA DNA helicase regulate DNA replication restart.Nucleic acids research · 2026Article
- Mechanisms of chromosomal DNA replication in Escherichia coli and Bacillus subtilis.FEMS microbiology reviews · 2026Review
- Genomic landscape of single-stranded DNA gapped intermediates in Escherichia coli.Nucleic acids research · 2022Article
- Escherichia coli K-12 has two distinguishable PriA-PriB replication restart pathways.Molecular microbiology · 2021Article
- Structure-specific DNA replication-fork recognition directs helicase and replication restart activities of the PriA helicase.Proceedings of the National Academy of Sciences of the United States of America · 2018Article
- Mechanisms of bacterial DNA replication restart.Nucleic acids research · 2018Review
- Bacterial DnaB helicase interacts with the excluded strand to regulate unwinding.The Journal of biological chemistry · 2017Article
- An aromatic-rich loop couples DNA binding and ATP hydrolysis in the PriA DNA helicase.Nucleic acids research · 2016Article
- Biochemical Characterization of the Human Mitochondrial Replicative Twinkle Helicase: SUBSTRATE SPECIFICITY, DNA BRANCH MIGRATION, AND ABILITY TO OVERCOME BLOCKADES TO DNA UNWINDING.The Journal of biological chemistry · 2016Article
- DNA Interactions Probed by Hydrogen-Deuterium Exchange (HDX) Fourier Transform Ion Cyclotron Resonance Mass Spectrometry Confirm External Binding Sites on the Minichromosomal Maintenance (MCM) Helicase.The Journal of biological chemistry · 2016Article
- Different genome stability proteins underpin primed and naïve adaptation in E. coli CRISPR-Cas immunity.Nucleic acids research · 2015Article
Corrections and comments
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Authors and funding
2 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
When replication stalls and forks disassemble, the restart primosome is required to reload the replicative helicase so that chromosomal replication can be reinitiated. We have taken a photo-cross-linking approach, using model replication forks containing a phenyl diazirine placed at single locations, to determine the positions of primosomal protein binding and changes in interactions that occur during the assembly reaction. This approach revealed a novel mode for single-stranded DNA-binding protein (SSB)-DNA binding, in which SSB interacts with both the leading and lagging single-strand segments and the parental duplex of the fork. Cross-linking to a novel region within SSB is observed only when it is bound to forked structures. This binding mode is also followed by PriB. PriA binds to the fork, excluding SSB and PriB, interacting with the primer terminus, single-stranded leading and lagging strands and duplex in immediate proximity of the fork. SSB binds to flanking single-stranded segments distal to the fork in the presence of PriA. The addition of PriB or DnaT to a PriA-SSB-fork complex does not lead to cross-linking or displacement, suggesting that their association is through protein-protein interactions at early stages of the reaction. Upon addition of DnaC and the DnaB helicase in the presence of ATPγS, helicase is assembled, leading to contacts within the duplex region on the tracking (lagging) strand and strong contacts with the displaced leading single strand near the fork. PriA is displaced from DNA upon helicase assembly.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.