FIG. 1.
Prediction of poly(A) signals in Drosophila 5′-UTRs. (A) Pie charts showing the proportion of 3′-UTRs with (light gray) or without (dark gray) poly(A) signals (PAS), as predicted by using the Polya_svm program; the smallest sector of the pie shows the portion of the 3′-UTR in which multiple poly(A) signals (multi-PAS) are predicted. The pie on top represents the number of transcripts with predicted poly(A) signals; the chart on the bottom shows the proportion of genes with at least one transcript with a predicted poly(A) signal. (B) Pie charts showing the proportions of transcripts (top) or genes (bottom) with at least one (light gray) or without and (dark gray) poly(A) signals in the 5′-UTR, as predicted with the Polya_svm program; the smallest sectors show transcripts/genes with predicted multi- poly(A) signals. (C) Venn diagram showing how many genes are predicted to have a transcript with at least a 5′-UTR poly(A) signal and how many of these are predicted by both the Polyadq and Polya_svm programs. (D) Information on the 10 5′-UTR sequences experimentally tested in this study.