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. 2020 Apr 18;23(5):101067. doi: 10.1016/j.isci.2020.101067

Figure 4.

Figure 4

Process of the Heme-Responsive Dynamic Regulation System: HrtR Sensed Excess Heme and Dissociated from hrtO, Protein dcas9 Inhibited Target Gene Expression and Reduced the Intracellular Heme Concentration

Low level of heme results in HrtR turning off the expression of CRISPRi by recombining to hrtO.