Figure 4.

Characterization of putative RNA cis-elements predictive of plant TISs. (A,B) Relationship between the number of C/Us (y-axis) and the enrichment of sequence occurrence (x-axis) for all 5-mers in the tomato (A) and Arabidopsis (B) 5′ UTR–AUG and 5′ UTR–nonAUG TIS groups. The enrichment is represented as the log₂ ratio of median sequence occurrence between TPs and TNs in the 200-bp regions centered on TIS sites. Rho indicates Spearman's rank correlation coefficient. (C,D) As described in Figure 3C, but for the enrichment of putative RNA cis-elements in the tomato (C) and Arabidopsis (D) 5′ UTR TIS groups. The putative “UCUUC” and “UCUCU” elements with the highest importance score and with the highest enrichment, which are indicated by arrows and highlighted in blue and orange in C,D, are shown.