FIG. 2.

Deletion mutants. The sequence in the neighborhood of the C259 editing site is shown. Deletion mutants M1 to M6 are missing 10 nt in the regions indicated. Mutants M7 to M12 are missing 5 nt. The sequence analyses of RT-PCR transcript products after electroporation of the respective constructs are shown in panels. +, occurrence of editing as found in wild-type construct; −, absence of nonencoded U residue; +/−, reduced editing compared to the wild type. Small gray arrowheads mark the position of the C259 editing target. Large open arrowheads show the positions of the deleted residues.