Untranslated region (UTR) analysis for mRNAs changed in their polysomal distribution (Group I and II from Figure 2) in the (iso)4E-1 mutant.

aAll data represent percentages of the total of sequences within the group.bRandomly selected Arabidopsis thaliana accessions (80) were evaluated for 5′ and 3′UTR length and secondary structures to support the significance of percentages for Groups I and II.uAUGs: upstream AUGs; uORFs: upstream open reading frames; IRES: internal ribosome entry site; CPE: cytoplasmic polyadenylation element.