IHF and Fis as Escherichia coli Cell Cycle Regulators: Activation of the Replication Origin oriC and the Regulatory Cycle of the DnaA Initiator

K Kasho, S Ozaki, T Katayama - International journal of molecular …, 2023 - mdpi.com
This review summarizes current knowledge about the mechanisms of timely binding and
dissociation of two nucleoid proteins, IHF and Fis, which play fundamental roles in the …

Extracellular DNA-protein interactions

SD Goodman - Current Opinion in Structural Biology, 2024 - Elsevier
Highlights•Nucleoprotein structures are part of the extracellular matrix of biofilms.•The
nucleoprotein structures of biofilms are ubiquitous.•The nucleoprotein structures are both for …

Rep protein accommodates together dsDNA and ssDNA which enables a loop-back mechanism to plasmid DNA replication initiation

K Wegrzyn, M Oliwa, M Nowacka… - Nucleic Acids …, 2023 - academic.oup.com
For DNA replication initiation in Bacteria, replication initiation proteins bind to double-
stranded DNA (dsDNA) and interact with single-stranded DNA (ssDNA) at the replication …

Open questions about the roles of DnaA, related proteins, and hyperstructure dynamics in the cell cycle

M Kohiyama, J Herrick, V Norris - Life, 2023 - mdpi.com
The DnaA protein has long been considered to play the key role in the initiation of
chromosome replication in modern bacteria. Many questions about this role, however …

Hypothesis: Bacteria live on the edge of phase transitions with a cell cycle regulated by a water-clock

V Norris - Theory in Biosciences, 2024 - Springer
A fundamental problem in biology is how cells obtain the reproducible, coherent phenotypes
needed for natural selection to act or, put differently, how cells manage to limit their …

Negative DNA supercoiling enhances DARS2 binding of DNA-bending protein IHF in the activation of Fis-dependent ATP-DnaA production

K Kasho, K Miyoshi, M Yoshida, R Sakai… - Nucleic acids …, 2025 - academic.oup.com
Oscillation of the active form of the initiator protein DnaA (ATP-DnaA) allows for the timely
regulation for chromosome replication. After initiation, DnaA-bound ATP is hydrolyzed …

Read-through transcription of tRNA underlies the cell cycle-dependent dissociation of IHF from the DnaA-inactivating sequence datA

K Kasho, R Sakai, K Ito, W Nakagaki… - Frontiers in …, 2024 - frontiersin.org
Timely initiation of chromosomal DNA replication in Escherichia coli is achieved by cell cycle-
coordinated regulation of the replication origin, oriC, and the replication initiator, ATP-DnaA …

Toward an understanding of the DNA replication initiation in bacteria

K Wegrzyn, I Konieczny - Frontiers in Microbiology, 2024 - frontiersin.org
Although the mechanism of DNA replication initiation has been investigated for over 50
years, many important discoveries have been made related to this process in recent years …

SSB promotes DnaB helicase passage through DnaA complexes at the replication origin oriC for bidirectional replication

Y Akama, R Yoshida, S Ozaki… - The Journal of …, 2025 - academic.oup.com
For bidirectional replication in Escherichia coli, higher order complexes are formed at the
replication origin oriC by the initiator protein DnaA, which locally unwinds the left edge of …

How bacteria initiate DNA replication comes into focus

F Rashid, JM Berger - BioEssays, 2025 - Wiley Online Library
The ability to initiate DNA replication is a critical step in the proliferation of all organisms. In
bacteria, this process is mediated by an ATP‐dependent replication initiator protein, DnaA …