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Locations of binding sites for EsrB, EsrC, PhoB, and Fur at promoter regions of T3SS and T6SS in E. tarda PPD130/91. The bent arrows represent putative promoter regions with their orientation representing the direction of transcription. The label(s) above each promoter region indicates the presence of a DNA binding site(s) for the respective regulator(s). The sizes of the arrows do not reflect the scale of the corresponding genes.
