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Binding of the PmrA-His and PmrAc-His proteins to the pmrHFIJKLM promoter (called pmrF) and the pmrCAB promoter (called pmrC). The sizes of the fragments used and the primers used to amplify the fragments are noted. Arrows, shifted fragments. N, no protein added; A, PmrA-His added; Ac, PmrAc-His added.
