PMID:16338685

Citation	Kato, J Regulatory network of the initiation of chromosomal replication in Escherichia coli. Crit. Rev. Biochem. Mol. Biol. 40:331-42
Abstract	The bacterial chromosome is replicated once during the division cycle, a process ensured by the tight regulation of initiation at oriC. In prokaryotes, the initiator protein DnaA plays an essential role at the initiation step, and feedback control is critical in regulating initiation. Three systems have been identified that exert feedback control in Escherichia coli, all of which are necessary for tight strict regulation of the initiation step. In particular, the ATP-dependent control of DnaA activity is essential. A missing link in initiator activity regulation has been identified, facilitating analysis of the reaction mechanism. Furthermore, key components of this regulatory network have also been described. Because the eukaryotic initiator complex, ORC, is also regulated by ATP, the bacterial system provides an important model for understanding initiation in eukaryotes. This review summarizes recent studies on the regulation of initiator activity.
Links	PubMed Online version:10.1080/10409230500366090
Keywords	Bacterial Proteins/physiology; Chromosomes, Bacterial/physiology; DNA Replication; DNA-Binding Proteins/physiology; Escherichia coli/genetics; Gene Expression Regulation, Bacterial/physiology; Replication Origin; Signal Transduction
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