![]() ![]() In turn, the quorum sensing regulators QseB and QseC in Escherichia coli have been reported to modulate the expression of dnaA ( Wu et al., 2021). As reviewed by Menikpurage et al., DnaA has been shown to regulate expression of genes involved in different cellular processes including quorum sensing, cell motility, heat shock response, DNA repair, and cell cycle regulation. It is likely that DnaA may coordinate DNA replication and repair process by participating in control of the SOS response genes ( Wurihan et al., 2018). In fact, the replication initiator protein DnaA regulates DNA replication ( Fuller and Kornberg, 1983 Bramhill and Kornberg, 1988) and also controls gene expression as a transcription factor ( Atlung et al., 1984 Braun et al., 1985 Messer and Weigel, 1997 Wurihan et al., 2018). The fluctuation in gene expression regulated by transcription factors are tightly associated with progression of the bacterial cell cycle.
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