Single-stranded DNA recruitment mechanism in replication origin unwinding by DnaA initiator protein and HU, an evolutionary ubiquitous nucleoid protein

R Yoshida, S Ozaki, H Kawakami… - Nucleic acids …, 2023 - academic.oup.com
The Escherichia coli replication origin oriC contains the initiator ATP-DnaA-Oligomerization
Region (DOR) and its flanking duplex unwinding element (DUE). In the Left-DOR subregion …

[HTML][HTML] The Macromolecular Machines that Duplicate the Escherichia coli Chromosome as Targets for Drug Discovery

JM Kaguni - Antibiotics, 2018 - mdpi.com
DNA replication is an essential process. Although the fundamental strategies to duplicate
chromosomes are similar in all free-living organisms, the enzymes of the three domains of …

DnaB helicase dynamics in bacterial DNA replication resolved by single-molecule studies

RR Spinks, LM Spenkelink, SA Stratmann… - Nucleic acids …, 2021 - academic.oup.com
Abstract In Escherichia coli, the DnaB helicase forms the basis for the assembly of the DNA
replication complex. The stability of DnaB at the replication fork is likely important for …

[HTML][HTML] Concerted actions of DnaA complexes with DNA-unwinding sequences within and flanking replication origin oriC promote DnaB helicase loading

Y Sakiyama, M Nagata, R Yoshida, K Kasho… - Journal of Biological …, 2022 - ASBMB
Unwinding of the replication origin and loading of DNA helicases underlie the initiation of
chromosomal replication. In Escherichia coli, the minimal origin oriC contains a duplex …

[HTML][HTML] DnaB helicase is recruited to the replication initiation complex via binding of DnaA domain I to the lateral surface of the DnaB N-terminal domain

C Hayashi, E Miyazaki, S Ozaki, Y Abe… - Journal of Biological …, 2020 - ASBMB
The DNA replication protein DnaA in Escherichia coli constructs higher-order complexes on
the origin, oriC, to unwind this region. DnaB helicase is loaded onto unwound oriC via …

Dysregulated DnaB unwinding induces replisome decoupling and daughter strand gaps that are countered by RecA polymerization

MS Behrmann, HM Perera, MU Welikala… - Nucleic Acids …, 2024 - academic.oup.com
The replicative helicase, DnaB, is a central component of the replisome and unwinds duplex
DNA coupled with immediate template-dependent DNA synthesis by the polymerase, Pol III …

Convergent evolution in two bacterial replicative helicase loaders

J Chase, J Berger, D Jeruzalmi - Trends in biochemical sciences, 2022 - cell.com
Dedicated loader proteins play essential roles in bacterial DNA replication by opening ring-
shaped DnaB-family helicases and chaperoning single-stranded (ss) DNA into a central …

[HTML][HTML] Mechanisms of opening and closing of the bacterial replicative helicase

J Chase, A Catalano, AJ Noble, ET Eng, PDB Olinares… - Elife, 2018 - elifesciences.org
Assembly of bacterial ring-shaped hexameric replicative helicases on single-stranded (ss)
DNA requires specialized loading factors. However, mechanisms implemented by these …

Obstacles to DNA replication in Escherichia coli and the role of UvrD helicase in their resolution

DW Warecka - 2024 - etheses.whiterose.ac.uk
UvrD is a multi-functional Escherichia coli helicase. It is widely involved in DNA repair,
including its DNA unwinding role during mismatch repair and RNAP removal role during …

Exploring helicase dynamics in bacterial DNA replication: a single-molecule approach

R Spinks - 2021 - ro.uow.edu.au
Bacterial DNA replication is a potential novel antibiotic target in the fight against increasing
anti-microbial resistance. To fully explore those opportunities, a full understanding of the …