Figure 26-6: Predicted secondary structure of the CI RNA and possible interactions in the leader transcript of the immunity region. Panel A. Computer predicted structure of the CI RNA. The minimal sequence necessary for CI RNA maturation is reported and the 5'- and 3'-ends of the mature CI RNA molecule are indicated by brackets. Mutations that affect CI activity or processing are indicated; cI478 is a silent mutation and cI483 is a suppressor of ash3. From (39) with permission. Panel B. Predicted secondary structures of the PLE-t1 transcript. The alternative structures and their free energy are reported. Boldface: bases complementary to CI RNA single-stranded regions; italics: bases involved in t1 stem formation. From (14) with permission. Panel C. Possible interactions between the CI RNA and the SeqA and SeqC targets in the leader region. The complementary bases in single stranded regions of CI RNA are connected by lines. The base changes in the P4-like retronphage FR73 are boxed. The arrow indicates an insertion, D a deletion. Redrawn from (86) with permission. (for better image quality, click here for tif image, which may be quite large; may also require screen refreshing plus special software to view; or view larger tif in separate window)

Figure 26-1, Figure 26-2, Figure 26-3, Figure 26-4 ( ab ), Figure 26-5, Figure 26-6 ( abc ), Figure 26-7,

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