Figure 4
E1 frequency decreases with asymmetry. Editing frequency is presented for sites within interior-loop strands of lengths 1 (circles), 2 (squares), 3 (diamonds), 4 (triangles), as a function of the asymmetry of the loop. Asymmetry is defined as the difference between the length of the strand opposing the editing site and the edited strand length. Frequencies are normalized by the averaged editing frequency for sites having same strand length, regardless of opposite strand length.