Figure 3

The IRSS searching results from entire UTRdb in different length parameters. There are three length parameters applied in this study, L = 100 (A and D), 250 (B and E) and 400 (C and F). To decide the best R value, linear discriminant analysis was applied in each window shown as d, e and f. The best R values are 1.54, 159 and 1.55 for L = 100, 250 and 400 respectively after calculation. Curves of positive and negative IRES elements represent the R value distribution. The original alignment score of every alignment window for all UTRdb data shown as (A), (B) and (C).