Figure 8.

Secondary structure models for the 3′-end sequences of L1s and monocot SINEs. The putative transcripts form putative hairpin structures. Compensatory mutations (1–5) are shown by red rectangles. Conserved nucleotides are indicated by blue circles. The minimum free energy levels were −10.8 or −12.6 (kcal/mol) for L1s (monocot 1a and LINE1-1, resp.) and (−12.5)–(−13.7) for SINEs (ZmSINE2.3: −15.4 and SINE2-1c: −17.7). The structures were deduced using mfold [96].