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. 2000 Aug 22;97(18):9919–9924. doi: 10.1073/pnas.170281497

Figure 5.

Figure 5

Models of regulation. (A) DsrA shown with the rpoS translational operator. The structure of the rpoS translational operator (10) is shown with the new DsrA structure model emphasizing the integrity of stem-loop 2. The DsrA–rpoS RNA interaction also is described elsewhere (4, 5). (B) DsrA forms a complex with hns mRNA (Left) and with rpoS mRNA (Right). The hns- and rpoS-complementary regions in DsrA are outlined in white. The start codons of hns and rpoS (plus sign in circle) and the stop codon of hns (minus sign in box) are shown. The DsrA–hns RNA interaction is shown below as a coaxial stack, with the second DsrA stem-loop melted and the first and third stem-loops intact. In contrast, the DsrA complex with rpoS mRNA has the first DsrA stem-loop melted out and the second and third stem-loops intact. Stem-loops are numbered in circles.